Ready plaster mortar GOST 28013 98
GOST 28013-98
INTERSTATE STANDARD
BUILDING SOLUTIONS
General specifications
INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION
ON STANDARDIZATION, TECHNICAL REGULATION
AND CERTIFICATIONS IN CONSTRUCTION (MNTKS)
Moscow
Foreword
1 DEVELOPED by the State Central Research and Design Institute complex problems building structures and structures to them. V.A. Kucherenko (TsNIISK named after V.A. Kucherenko)
INTRODUCED by Gosstroy of Russia
2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (ISTCS) on November 12, 1998
State name | Body name government controlled construction |
Republic of Armenia | Ministry of Urban Development of the Republic of Armenia |
The Republic of Kazakhstan | Committee on Housing and Construction Policy under the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan |
Republic of Kyrgyzstan | State Inspectorate on architecture and construction under the Government of the Kyrgyz Republic |
The Republic of Moldova | Ministry of Territorial Development, Construction and public utilities Republic of Moldova |
Gosstroy of Russia |
|
The Republic of Tajikistan | Gosstroy of the Republic of Tajikistan |
The Republic of Uzbekistan | Goskomarchitektstroy of the Republic of Uzbekistan |
3 INSTEAD OF GOST 28013-89
4 ENTERED INTO FORCE July 1, 1999 as state standard of the Russian Federation by the Decree of the Gosstroy of Russia dated December 29, 1998 No. 30
INTERSTATE STANDARD
BUILDING SOLUTIONS
General specifications
MORTARS
General specifications
Introduction date 1999-07-01
1 area of use
This standard applies to mortars based on mineral binders used for masonry and installation of building structures during the construction of buildings and structures, fastening facing products, plasters.
The standard does not apply to special solutions(heat-resistant, chemically-resistant, fire-resistant, heat- and waterproofing, plugging, decorative, straining, etc.).
The requirements set out in 4.3 - 4.13, 4.14.2 - 4.14.14, sections 5-7, appendices C and appendices D of this standard are mandatory.
2 Normative references
Used in this standard regulations are given in Appendix A.
3 Classification
3.1 Mortars are classified according to:
main purpose;
The binder used;
Medium density.
3.1.1 According to the main purpose, solutions are divided into:
Masonry (including for installation work);
Facing;
Plaster.
3.1.2 According to the binder used, the solutions are divided into:
Simple (on a binder of one type);
Complex (on mixed binders).
3.1.3 According to the average density, the solutions are divided into:
heavy;
3.2 Symbol mortar when ordering, it should consist of an abbreviated designation indicating the degree of readiness (for dry mortar mixes), purpose, type of binder used, grades for strength and mobility, average density (for light mortars) and the designation of this standard.
Symbol example heavy solution, ready-to-use, masonry, on a lime-gypsum binder, strength grade M100, mobility - P to 2:
Masonry mortar, lime-gypsum, M100, P to 2, GOST 28013-98.
For a dry mortar mixture, light, plaster, cement binder, strength grade M50 and mobility - P to 3, medium density D900:
Mix dry mortar plaster, cement, M50, P to 3, D900, GOST 28013-98.
4 General technical requirements
4.1 Mortars are prepared in accordance with the requirements of this standard for technological regulations approved by the manufacturer.
4.2 Properties of mortars include properties of mortar mixtures and hardened mortar.
4.2.1 Basic properties of mortar mixtures:
Mobility;
Water holding capacity;
Delamination;
application temperature;
Average density;
Humidity (for dry mortar mixtures).
4.2.2 Main properties of the hardened mortar:
Compressive strength;
Frost resistance;
Average density.
If necessary, additional
indicators according to GOST 4.233.
4.3 Depending on mobility mortar mixtures subdivided according to table 1.
4.4 Water-holding capacity of mortar mixtures should be at least 90%, clay-containing solutions - at least 93%.
4.5 The delamination of freshly prepared mixtures should not exceed 10%.
4.6 The mortar mixture should not contain fly ash of more than 20% of the mass of cement.
4.7 The temperature of mortar mixtures at the time of use should be:
a) masonry mortars for outdoor work - in accordance with the instructions in table 2;
b) facing solutions for facing with glazed tiles minimum temperature outdoor air, °С, not less than:
from 5 and above .............................................. ................................... 15;
in) plaster solutions at minimum outdoor air temperature, °C, not less than:
from 0 to 5.............................................. .......................................... 15
from 5 and above .............................................. ..................................... 10.
table 2
Average daily outdoor temperature | mortar mixture temperature, °C, not less than |
|||
masonry material |
||||
at wind speed, m/s |
||||
Up to minus 10 | ||||
From minus 10 to minus 20 | ||||
Below minus 20 | ||||
Note - For masonry mortar mixtures during installation work, the temperature of the mixture must be 10 ° C higher than indicated in the table |
||||
4.8 The moisture content of dry mortar mixtures should not exceed 0.1% by weight.
4.9 Normalized indicators of the quality of the hardened mortar must be provided at the design age.
For the design age of the solution, unless otherwise specified in project documentation, should be taken 28 days for solutions on all types of binders, except for gypsum and gypsum-containing.
The design age of mortars on gypsum and gypsum-containing binders is 7 days.
4.10 The compressive strength of mortars at design age is characterized by grades: M4, M10, M25, M50, M75, M100, M150, M200.
The compressive strength grade is assigned and controlled for all types of solutions.
4.11 Frost resistance of solutions is characterized by grades.
For solutions, the following frost resistance grades are established: F10, F15, F25, F35, F50, F75, F100, F150, F200.
For solutions of grades for compressive strength M4 and M10, as well as for solutions prepared without the use of hydraulic binders, frost resistance grades are not assigned and not controlled.
4.12 The average density, D, of hardened solutions at the design age should be, kg / m 3
Heavy solutions .................................................................. .................................. 1500 and more
Light solutions .................................................................. ................................................ less than 1500.
The normalized value of the average density of the solutions is set by the consumer in accordance with the work project.
4.13 Deviation of the average density of the solution in the direction of increase is allowed no more than 10% of the one established by the project.
4.14 Requirements for materials for the preparation of mortars
4.14.1 Materials used for the preparation of mortars must comply with the requirements of standards or specifications on these materials, as well as the requirements of this standard.
4.14.2 The following should be used as binders:
Gypsum binders according to GOST 125;
Building lime according to GOST 9179;
Portland cement and Portland slag cement according to GOST 10178;
Pozzolanic and sulfate-resistant cements according to GOST 22266;
Cements for mortars according to GOST 25328;
Clay according to Appendix B;
Others, including mixed binders, according to regulatory documents for a specific type of binders.
4.14.3 Binder materials for the preparation of solutions should be selected depending on their purpose, type of structures and conditions of their operation.
4.14.4 The consumption of cement per 1 m 3 of sand in mortars based on cement and cement-containing binders must be at least 100 kg, and for masonry mortars, depending on the type of structures and their operating conditions, not less than that given in Appendix D.
4.14.6 Lime binder is used in the form of hydrated lime (fluff), lime paste, lime milk.
The milk of lime must have a density of at least 1200 kg/m3 and contain at least 30% lime by weight.
Lime binder for plastering and facing mortars must not contain unextinguished lime particles.
Lime dough must have a temperature of at least 5 °C.
4.14.7 The following should be used as a placeholder:
Sand for construction works according to GOST 8736;
Fly ash according to GOST 25818;
Ash and slag sand according to GOST 25592;
Porous sands according to GOST 25820;
Sand from slag from thermal power plants according to GOST 26644;
Sand from slags of ferrous and non-ferrous metallurgy for concrete according to GOST 5578.
4.14.8 The largest aggregate grain size should be, mm, not more than:
Masonry (except rubble masonry) .............................................. ......................... 2.5
Rubble masonry .................................................. ................................................. ....... 5.00
Plaster (except for the covering layer) .............................................. ................. 2.5
Plaster covering layer .................................................................. ........................... 1.25
Facing .............................................................. ................................................. ...... 1.25
(Changed edition, Rev. No. 1)
4.14.9 When heating aggregates, their temperature, depending on the binder used, should not be higher, °С, when using:
Cement binder ................................................................ ......................................... 60
Cement-lime, cement-clay and clay binder ........ 40
Lime, clay-lime, gypsum and lime-gypsum
binder ………………………………………………………………………... 20.
4.14.11 Specific effective activity natural radionuclides A eff of materials used for the preparation of mortar mixtures should not exceed the limit values, depending on the field of application of mortar mixtures in accordance with GOST 30108.
4.14.12 Chemical additives must comply with the requirements of GOST 24211.
Additives are introduced into ready-to-use mortar mixtures in the form of aqueous solutions or aqueous suspensions, into dry mortar mixtures - in the form of a water-soluble powder or granules.
4.14.13 Water for mixing mortar mixtures and preparing additives is used in accordance with GOST 23732.
4.14.14 Bulk raw materials for mortar mixtures are dosed by weight, liquid components are dosed by weight or volume.
The dosing error should not exceed ±1% for binders, water and additives, ±2% for aggregates.
For mortar mixing plants with a capacity of up to 5 m 3 / h, volumetric dosing of all materials is allowed with the same errors.
4.15 Marking, packaging
4.15.1 Dry mortar mixtures are packed in bags of polyethylene film according to GOST 10354 weighing up to 8 kg or paper bags according to GOST 2226 weighing up to 50 kg.
4.15.2 Packaged dry mortar mixes should be marked on each package. The marking must be clearly marked on the packaging with indelible ink.
4.15.3 Mortar mixtures must have a quality document. The manufacturer must accompany the dry mortar mixture with a label or marking applied to the package, and a ready-to-use mortar mixture dispensed in vehicle, - a quality document, which should contain the following data:
Name or trademark and address of the manufacturer;
Symbol for mortar according to 3.2;
The class of materials used to prepare the mixture, according to the specific effective activity of natural radionuclides and the digital value of A eff;
Brand for compressive strength;
Mobility mark (P to);
The volume of water required for the preparation of the mortar mixture, l / kg (for dry mortar mixtures);
The type and amount of the introduced additive (% of the mass of the binder);
Shelf life (for dry mortar mixes), months;
Weight (for dry mortar mixes), kg;
The amount of the mixture (for mortar mixtures ready for use), m 3
date of preparation;
Application temperature, °С;
Designation of this standard.
If necessary, the marking and the quality document may contain additional data.
The quality document must be signed official manufacturer responsible for technical control.
5 Acceptance rules
5.1 Mortars must be accepted technical control manufacturer.
5.2 Mortar mixtures and solutions are accepted in batches by carrying out acceptance and periodic control.
A batch of a mortar mixture and a solution is taken as the amount of a mixture of one nominal composition with the same quality of its constituent materials, prepared according to a single technology.
The volume of the batch is set in agreement with the consumer - not less than the output of one shift, but not more than the daily output of the mortar mixer.
5.3 Acceptance control all mortar mixtures and solutions are subject to all standardized quality indicators.
5.4 When accepting each batch, at least five point samples are taken from the mortar mixture.
5.4.1 Incremental samples are taken at the place of preparation of the mortar mixture and / or at the place of its application from several batches or places of the container into which the mixture is loaded. Tank sampling points should be located at different depths. With a continuous supply of the mortar mixture, point samples are taken at unequal time intervals for 5-10 minutes.
5.4.2 After sampling, point samples are combined into a general sample, the mass of which should be sufficient to determine all controlled indicators of the quality of mortar mixtures and solutions. The sample taken is thoroughly mixed before testing (with the exception of mixtures containing air-entraining additives).
Mortar mixtures containing air-entraining, foaming and gas-forming additives are not additionally mixed before testing.
5.4.3 Testing of the ready-to-use mortar mixture should begin during the period of maintaining the normalized mobility.
5.5 The mobility and average density of the mortar mixture in each batch is controlled at least once per shift at the manufacturer after unloading the mixture from the mixer.
The moisture content of dry mortar mixtures is controlled in each batch.
The strength of the solution is determined in each batch of the mixture. The normalized technological indicators of the quality of the mortar mixtures provided for in the supply contract (average density, temperature, stratification, water-holding capacity), and the frost resistance of the mortar are controlled in time as agreed with the consumer, but at least once every 6 months, as well as when the quality of the initial materials, composition of the solution and technology of its preparation.
5.6 Radiation-hygienic assessment of materials used for the preparation of mortar mixtures is carried out according to the quality documents issued by the enterprises - suppliers of these materials.
In the absence of data on the content of natural radionuclides, the manufacturer once a year, as well as at each change of supplier, determines the specific effective activity natural radionuclides A eff materials according to GOST 30108.
5.7 Mortar mixtures ready for use are dispensed and taken by volume. The volume of the mortar mixture is determined by the output of the mortar mixer or by the volume of the transport or measuring tank. Dry mortar mixtures are dispensed and taken by weight.
5.8 If, when checking the quality of the mortar, a discrepancy is revealed with at least one of the technical requirements of the standard, this batch of mortar is rejected.
5.9 The consumer has the right to exercise control check the quantity and quality of the mortar mixture in accordance with the requirements of this standard according to the methods of GOST 5802.
5.10 The manufacturer is obliged to inform the consumer, at his request, of the results of control tests no later than 3 days after their completion, and in case of non-confirmation of the normalized indicator, inform the consumer immediately.
6 Control methods
6.1 Mortar samples are taken in accordance with the requirements of 5.4, 5.4.1 and 5.4.2.
6.2 Materials for the preparation of mortar mixtures are tested in accordance with the requirements of the standards and specifications for these materials.
6.3 The quality of chemical additives is determined in terms of the effectiveness of their action on the properties of mortars in accordance with GOST 30459.
6.4 The concentration of the working solution of additives is determined by a hydrometer according to GOST 18481 in accordance with the requirements of standards and specifications for additives of specific types.
6.5 The specific effective activity of natural radionuclides A eff in materials for the preparation of mortar mixtures is determined according to GOST 30108.
6.6 Mobility, average density, water-holding capacity and stratification of mortar mixtures are determined according to GOST 5802.
6.7 The volume of air involved in mortar mixtures is determined according to GOST 10181.
(Changed edition, Rev. No. 1)
6.8 The temperature of freshly prepared mortar mixtures is measured with a thermometer, immersing it in the mixture to a depth of at least 5 cm.
6.9 Compressive strength, frost resistance and average density hardened solutions are determined according to GOST 5802.
6.10 The moisture content of dry mortar mixtures is determined according to GOST 8735.
7 Transport and storage
7.1 Transport
7.1.1 Ready-to-use mortar mixtures should be delivered to the consumer in vehicles specially designed for their transportation.
With the consent of the consumer, transportation of mixtures in bunkers (buckets) is allowed.
7.1.2 The methods used for transporting mortar mixtures should exclude the loss of astringent dough, the ingress of atmospheric precipitation and impurities into the mixture.
7.1.3 Packed dry mortar mixes are transported by road, rail and other modes of transport in accordance with the rules for the carriage and securing of goods in force for this type of transport.
7.2 Storage
7.2.1 Mortar mixtures delivered to the construction site, ready for use, must be reloaded into mixers or other containers, provided that the specified properties of the mixtures are preserved.
7.2.2 Packed mortar dry mixes are stored in covered dry rooms.
Bags with a dry mix should be stored at a temperature not lower than 5°C under conditions that ensure the safety of the packaging and protection from moisture.
7.2.3 The shelf life of the dry mortar mixture is 6 months from the date of preparation.
At the end of the shelf life, the mixture should be checked for compliance with the requirements of this standard. In case of compliance, the mixture can be used for its intended purpose.
APPENDIX A
(reference)
List of regulatory documents
GOST 4.233-86 SPKP. Construction. Building solutions. Nomenclature of indicators
GOST 125-79 Gypsum binders. Specifications
GOST 2226-88 Paper bags. Specifications
GOST 2642.5-97 Refractories and refractory raw materials. Methods for the determination of iron oxide
GOST 2642.11-97 Refractories and refractory raw materials. Methods for determination of potassium and sodium oxides
GOST 3594.4-77 Molding clays. Methods for determining the sulfur content
GOST 5578-94 Crushed stone and sand from slags of ferrous and non-ferrous metallurgy for concrete. Specifications
GOST 5802-86 Building mortars. Test Methods
GOST 8735-88 Sand for construction works. Test Methods
GOST 8736-93 Sand for construction work. Specifications
GOST 9179-77 Building lime. Specifications
GOST 10178-85 Portland cement and Portland slag cement. Specifications
GOST 10181-2000 Concrete mixtures. Test Methods
GOST 10354-82 Polyethylene film. Specifications
GOST 18481-81 Hydrometers and glass cylinders. Specifications
GOST 21216.2-93 Clay raw materials. Method for determination of fine fractions
GOST 21216.12-93 Clay raw materials. Method for determining the residue on a sieve with mesh No. 0063
GOST 22266-94 Sulphate-resistant cements. Specifications
GOST 23732-79 Water for concretes and mortars. Specifications
GOST 24211-91 Additives for concrete. General technical requirements
GOST 25328-82 Cement for mortars. Specifications
GOST 25592-91 Ash and slag mixtures for thermal power plants for concrete. Specifications
GOST 25818-91 Fly ash from thermal power plants for concrete. Specifications
GOST 25820-2000 Lightweight concrete. Specifications
GOST 26633-91 Heavy and fine-grained concrete. Specifications
GOST 26644-85 Crushed stone and sand from slags of thermal power plants for concrete. Specifications
GOST 30108-94 Construction materials and products. Determination of specific effective activity of natural radionuclides
GOST 30459-96 Additives for concrete. Methods for determining efficiency
SNiP II-3-79* Construction heat engineering
(Changed edition, Rev. No. 1)
APPENDIX B
The mobility of the mortar mixture at the site of application, depending on the purpose of the solution
Table B.1
The main purpose of the solution | Immersion depth of the cone, cm | Mobility grade P to |
A Masonry: | ||
For rubble masonry: | ||
vibrated | ||
unvibrated | ||
For masonry from hollow brick or ceramic stones | ||
For masonry from solid brick; ceramic stones; concrete stones or stones from light rocks | ||
For filling voids in masonry and supplying with a mortar pump | ||
For the device of a bed at installation of walls from large concrete blocks and panels; jointing of horizontal and vertical joints in walls made of panels and large concrete blocks | ||
B Facing: | ||
For fastening boards natural stone And ceramic tiles ready brick wall | ||
For fastening facing products of lightweight concrete panels and blocks in the factory | ||
In Plastering: | ||
soil solution | ||
spray solution: | ||
when applied manually | ||
at mechanized way drawing | ||
coating solution: | ||
without plaster | ||
with plaster |
APPENDIX B
(mandatory)
Clay for mortars. Technical requirements
These technical requirements apply to clay intended for the preparation of mortars.
B.1 Clay specifications
Sulfates and sulfides in terms of SO 3 - 1;
Sulfide sulfur in terms of SO 3 - 0.3;
- mica - 3;
Soluble salts (causing efflorescence and efflorescence):
The amount of iron oxides - 14;
The sum of potassium and sodium oxides is 7.
B.1.4 Clay shall not contain organic impurities in quantities that give a dark color.
IN 2. Clay test methods
B.2.1 The granulometric composition of clay is determined according to GOST 21216.2 and GOST 21216.12.
B.2.7 The presence of organic impurities is determined according to GOST 8735.
APPENDIX D
(mandatory)
Minimum consumption of cement in masonry mortar
Table D.1
Key words: mortars, mineral binders, masonry, installation of building structures; mortars for masonry, facing, plastering
GOST 28013-98
Group G13
INTERSTATE STANDARD
BUILDING SOLUTIONS
General specifications
General specifications
ISS 91.100.10
OKSTU 5870
Introduction date 1999-07-01
Foreword
Foreword
1 DEVELOPED by the State Central Research and Design Institute of Complex Problems of Building Structures and Structures named after V.A. Kucherenko (TsNIISK named after V.A. Kucherenko), Research, Design and Technological Institute of Concrete and Reinforced Concrete ( NIIZhB), with the participation of CJSC "Pilot Plant of Dry Mixes" and JSC "Roskonitstroy" of the Russian Federation
INTRODUCED by Gosstroy of Russia
2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (ISTCS) on November 12, 1998
voted to accept
State name | Name of the public administration body for construction |
Republic of Armenia | Ministry of Urban Development of the Republic of Armenia |
The Republic of Kazakhstan | Committee on Housing and Construction Policy under the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan |
Republic of Kyrgyzstan | State Inspectorate for Architecture and Construction under the Government of the Kyrgyz Republic |
The Republic of Moldova | Ministry of Territorial Development, Construction and Public Utilities of the Republic of Moldova |
the Russian Federation | Gosstroy of Russia |
The Republic of Tajikistan | Gosstroy of the Republic of Tajikistan |
The Republic of Uzbekistan | Goskomarchitektstroy of the Republic of Uzbekistan |
3 INSTEAD OF GOST 28013-89
4 INTRODUCED from July 1, 1999 as the state standard of the Russian Federation by the Decree of the Gosstroy of Russia dated November 29, 1998 N 30
5 EDITION (July 2018), with Amendment No. 1 (IUS 11-2002)
Information about changes to this standard is published in the annual information index "National Standards", and the text of changes and amendments - in the monthly information index "National Standards". In case of revision (replacement) or cancellation of this standard, a corresponding notice will be published in the monthly information index "National Standards". Relevant information, notification and texts are also placed in information system common use- on the official site federal agency on technical regulation and metrology on the Internet (www.gost.ru)
1 area of use
This standard applies to mortars based on mineral binders used for masonry and installation of building structures during the construction of buildings and structures, fastening of facing products, plaster.
The standard does not apply to special mortars (heat-resistant, chemically resistant, fire-resistant, heat and waterproofing, grouting, decorative, straining, etc.).
The requirements set out in 4.3-4.13, 4.14.2-4.14.14, sections 5-7, appendices C and D of this standard are mandatory.
2 Normative references
The normative documents used in this standard are given in Appendix A.
3 Classification
3.1 Mortars are classified according to:
- main purpose;
- used binder;
- medium density.
3.1.1 According to the main purpose, solutions are divided into:
- masonry (including for installation works);
- facing;
- plastering.
3.1.2 According to the binder used, the solutions are divided into:
- simple (on a binder of the same type);
- complex (on mixed binders).
3.1.3 According to the average density, the solutions are divided into:
- heavy;
- lungs.
3.2 The reference designation of the mortar when ordering should consist of an abbreviated designation indicating the degree of readiness (for dry mortar mixes), purpose, type of binder used, grades for strength and mobility, average density (for light mortars) and the designation of this standard.
An example of a symbol for a heavy mortar, ready for use, masonry, on a lime-gypsum binder, strength grade M100, mobility - P2:
Masonry mortar, lime-gypsum, M100, P2,
GOST 28013-98 .
For a dry mortar mixture, light, plaster, cement binder, strength grade M50 and mobility - P3, medium density D900:
Mix dry mortar plaster, cement, M50, P3, D900, GOST 28013-98 .
4 General technical requirements
4.1 Mortars are prepared in accordance with the requirements of this standard according to the technological regulations approved by the manufacturer.
4.2 Properties of mortars include properties of mortar mixtures and hardened mortar.
4.2.1 Basic properties of mortar mixtures:
- mobility;
- water holding capacity;
- stratification;
- application temperature;
- average density;
- humidity (for dry mortar mixtures).
4.2.2 Main properties of the hardened mortar:
- compressive strength;
- frost resistance;
- average density.
If necessary, additional indicators can be set in accordance with GOST 4.233.
4.3 Depending on the mobility, mortar mixtures are subdivided in accordance with table 1.
Table 1
Mobility grade P | Norm of mobility by immersion of the cone, cm |
||||
4.4 Water-holding capacity of mortar mixtures should be at least 90%, clay-containing solutions - at least 93%.
4.5 The delamination of freshly prepared mixtures should not exceed 10%.
4.6 The mortar mixture should not contain fly ash of more than 20% by weight of cement.
4.7 The temperature of mortar mixtures at the time of use should be:
a) masonry mortars for outdoor work - in accordance with the instructions in table 2;
b) facing mortars for cladding with glazed tiles at a minimum outdoor temperature, °C, not less than:
from 5 and above |
c) plaster mortars at a minimum outdoor temperature, °C, not less than:
from 5 and above | ||||
table 2
Average daily outdoor temperature, °C | Mortar mixture temperature, °C, not less than |
|||
masonry material |
||||
at wind speed, m/s |
||||
Up to minus 10 | ||||
From minus 10 to minus 20 | ||||
Below minus 20 | ||||
Note - For masonry mortar mixtures during installation work, the temperature of the mixture must be 10 ° C higher than indicated in the table |
||||
4.8 The moisture content of dry mortar mixtures should not exceed 0.1% by weight.
4.9 Normalized indicators of the quality of the hardened mortar must be provided at the design age.
For the design age of the mortar, unless otherwise specified in the project documentation, 28 days should be taken for mortars on all types of binders, except for gypsum and gypsum-containing ones.
The design age of mortars on gypsum and gypsum-containing binders is 7 days.
(Changed edition, Rev. N 1).
4.10 The compressive strength of mortars at design age is characterized by grades: M4, M10, M25, M50, M75, M100, M150, M200.
The compressive strength grade is assigned and controlled for all types of solutions.
4.11 Frost resistance of solutions is characterized by grades.
For solutions, the following frost resistance grades are established: F10, F15, F25, F35, F50, F75, F100, F150, F200.
For solutions of grades for compressive strength M4 and M10, as well as for solutions prepared without the use of hydraulic binders, frost resistance grades are not assigned and not controlled.
4.12 The average density, , of hardened solutions at the design age should be, kg/m:
heavy solutions | 1500 and more | |||
Light solutions | less than 1500. | |||
The normalized value of the average density of the solutions is set by the consumer in accordance with the work project.
4.13 Deviation of the average density of the solution in the direction of increase is allowed no more than 10% of the one established by the project.
4.14 Requirements for materials for the preparation of mortars
4.14.1 Materials used for the preparation of mortars must comply with the requirements of standards or specifications for these materials, as well as the requirements of this standard.
4.14.2 The following should be used as binders:
- gypsum binders according to GOST 125;
- building lime according to GOST 9179;
- Portland cement and Portland slag cement according to GOST 10178;
- pozzolanic and sulfate-resistant cements according to GOST 22266;
- cements for mortars according to GOST 25328;
- clay according to Appendix B;
- others, including mixed binders, according to regulatory documents for a specific type of binders.
4.14.3 Binder materials for the preparation of solutions should be selected depending on their purpose, type of structures and conditions of their operation.
4.14.4 The consumption of cement per 1 m of sand in mortars based on cement and cement-containing binders must be at least 100 kg, and for masonry mortars, depending on the type of structures and their operating conditions, not less than that given in Appendix D.
4.14.6 Lime binder is used in the form of hydrated lime (fluff), lime paste, lime milk.
The milk of lime must have a density of at least 1200 kg/m3 and contain at least 30% lime by weight.
Lime binder for plastering and facing mortars must not contain unextinguished lime particles.
The lime paste must have a temperature of at least 5°C.
4.14.7 The following should be used as a placeholder:
- sand for construction works in accordance with GOST 8736;
- fly ash according to GOST 25818;
- ash and slag sand according to GOST 25592;
- porous sands according to GOST 25820;
- sand from slags of thermal power plants according to GOST 26644;
- sand from slags of ferrous and non-ferrous metallurgy for concrete according to GOST 5578.
4.14.8 The largest aggregate grain size should be, mm, not more than:
Masonry (except rubble masonry) | ||||
rubble masonry | ||||
Plaster (except for the covering layer) | ||||
Plaster coat | ||||
Facing | ||||
4.14.9 When heating aggregates, their temperature, depending on the binder used, should not be higher, °С, when using:
cement binder | ||||
Cement-lime, cement-clay and clay binder | ||||
Lime, clay-lime, gypsum and lime-gypsum binder | ||||
4.14.11 The specific effective activity of natural radionuclides of materials used for the preparation of mortar mixtures should not exceed the limit values depending on the field of application of mortar mixtures in accordance with GOST 30108.
4.14.12 Chemical additives must comply with the requirements of GOST 24211.
Additives are introduced into ready-to-use mortar mixtures in the form of aqueous solutions or aqueous suspensions, into dry mortar mixtures - in the form of a water-soluble powder or granules.
4.14.13 Water for mixing mortar mixtures and preparing additives is used in accordance with GOST 23732.
4.14.14 Bulk raw materials for mortar mixtures are dosed by weight, liquid components are dosed by weight or volume.
Dosing error should not exceed ± 1% for binders, water and additives, ± 2% aggregates.
For mortar mixing plants with a capacity of up to 5 m/h, volumetric dosing of all materials is allowed with the same errors.
4.15 Marking, packaging
4.15.1 Dry mortar mixtures are packed in polyethylene film bags according to GOST 10354 weighing up to 8 kg or paper bags according to GOST 2226 weighing up to 50 kg.
4.15.2 Packaged dry mortar mixes should be marked on each package. The marking must be clearly marked on the packaging with indelible ink.
4.15.3 Mortar mixtures must have a quality document.
The manufacturer must accompany the dry mortar mix with a label or marking applied to the package, and the ready-to-use mortar released into the vehicle with a quality document, which should contain the following data:
- name or trademark and address of the manufacturer;
- symbol mortar according to 3.2;
- the class of materials used to prepare the mixture, according to the specific effective activity of natural radionuclides and the digital value ;
- brand for compressive strength;
- mark on mobility (P);
- the volume of water required for the preparation of the mortar mixture, l / kg (for dry mortar mixtures);
- the type and amount of the added additive (% of the mass of the binder);
- shelf life (for dry mortar mixes), months;
- mass (for dry mortar mixtures), kg;
- the amount of the mixture (for mortar mixtures ready for use), m;
- date of preparation;
- application temperature, °С;
- designation of this standard.
If necessary, the marking and the quality document may contain additional data.
The quality document must be signed by the manufacturer's official responsible for technical control.
5 Acceptance rules
5.1 Mortar mixtures should be accepted by the manufacturer's technical control.
5.2 Mortar mixtures and solutions are accepted in batches by carrying out acceptance and periodic control.
A batch of a mortar mixture and a solution is taken as the amount of a mixture of one nominal composition with the same quality of its constituent materials, prepared according to a single technology.
The volume of the batch is set in agreement with the consumer - not less than the output of one shift, but not more than the daily output of the mortar mixer.
5.3 All mortar mixtures and solutions are subject to acceptance control according to all standardized quality indicators.
5.4 When accepting each batch, at least five point samples are taken from the mortar mixture.
5.4.1 Incremental samples are taken at the place of preparation of the mortar mixture and / or at the place of its application from several batches or places of the container into which the mixture is loaded. Tank sampling points should be located at different depths. With a continuous supply of the mortar mixture, point samples are taken at unequal time intervals for 5-10 minutes.
5.4.2 After sampling, point samples are combined into a general sample, the mass of which should be sufficient to determine all controlled indicators of the quality of mortar mixtures and solutions. The sample taken is thoroughly mixed before testing (with the exception of mixtures containing air-entraining additives).
Mortar mixtures containing air-entraining, foaming and gas-forming additives are not additionally mixed before testing.
5.4.3 Testing of the ready-to-use mortar mixture should begin during the period of maintaining the normalized mobility.
5.5 The mobility and average density of the mortar mixture in each batch is controlled at least once per shift at the manufacturer after unloading the mixture from the mixer.
The moisture content of dry mortar mixtures is controlled in each batch.
The strength of the solution is determined in each batch of the mixture.
The normalized technological indicators of the quality of the mortar mixtures provided for in the supply contract (average density, temperature, stratification, water-holding capacity), and the frost resistance of the mortar are controlled in time as agreed with the consumer, but at least once every 6 months, as well as when the quality of the initial materials, composition of the solution and technology of its preparation.
5.6 Radiation-hygienic assessment of materials used for the preparation of mortar mixtures is carried out according to the quality documents issued by the enterprises - suppliers of these materials.
In the absence of data on the content of natural radionuclides, the manufacturer determines the specific effective activity of natural radionuclides of materials according to GOST 30108 once a year, as well as at each change of supplier.
5.7 Mortar mixtures ready for use are dispensed and taken by volume. The volume of the mortar mixture is determined by the output of the mortar mixer or by the volume of the transport or measuring tank.
Dry mortar mixtures are dispensed and taken by weight.
5.8 If, when checking the quality of the mortar, a discrepancy is revealed in at least one of the technical requirements of the standard, this batch of mortar is rejected.
5.9 The consumer has the right to carry out a control check of the quantity and quality of the mortar mixture in accordance with the requirements of this standard according to the methods of GOST 5802.
5.10 The manufacturer is obliged to inform the consumer, at his request, of the results of control tests no later than 3 days after their completion, and in case of non-confirmation of the normalized indicator, inform the consumer immediately.
6 Control methods
6.1 Mortar samples are taken in accordance with the requirements of 5.4, 5.4.1 and 5.4.2.
6.2 Materials for the preparation of mortar mixtures are tested in accordance with the requirements of the standards and specifications for these materials.
6.3 Quality chemical additives determined by the indicator of the effectiveness of their action on the properties of mortars in accordance with GOST 30459.
6.4 The concentration of the working solution of additives is determined by a hydrometer according to GOST 18481 in accordance with the requirements of standards and specifications for additives of specific types.
6.5 The specific effective activity of natural radionuclides in materials for the preparation of mortar mixtures is determined according to GOST 30108.
6.6 Mobility, average density, water-holding capacity and stratification of mortar mixtures are determined according to GOST 5802.
6.7 The volume of air involved in mortar mixtures is determined according to GOST 10181.
6.8 The temperature of freshly prepared mortar mixtures is measured with a thermometer, immersing it in the mixture to a depth of at least 5 cm.
6.9 Compressive strength, frost resistance and average density of hardened solutions are determined according to GOST 5802.
6.10 The moisture content of dry mortar mixtures is determined according to GOST 8735.
7 Transport and storage
7.1 Transport
7.1.1 Ready-to-use mortar mixtures should be delivered to the consumer in vehicles specially designed for their transportation.
With the consent of the consumer, transportation of mixtures in bunkers (buckets) is allowed.
7.1.2 The methods used for transporting mortar mixtures should exclude the loss of astringent dough, the ingress of atmospheric precipitation and impurities into the mixture.
7.1.3 Packed dry mortar mixes are transported by road, rail and other modes of transport in accordance with the rules for the carriage and securing of goods in force for this type of transport.
7.2 Storage
7.2.1 Mortar mixtures delivered to the construction site, ready for use, must be reloaded into mixers or other containers, provided that the specified properties of the mixtures are preserved.
7.2.2 Packed mortar dry mixes are stored in covered dry rooms.
Bags with a dry mix should be stored at a temperature not lower than 5°C under conditions that ensure the safety of the packaging and protection from moisture.
7.2.3 The shelf life of the dry mortar mixture is 6 months from the date of preparation.
At the end of the shelf life, the mixture should be checked for compliance with the requirements of this standard. In case of compliance, the mixture can be used for its intended purpose.
APPENDIX A (informative). List of regulatory documents
APPENDIX A
(reference)
GOST 4.233-86 SPKP. Construction. Building solutions. Nomenclature of indicators
GOST 125-79 Gypsum binders. Specifications
GOST 2226-2013 Bags made of paper and combined materials. General specifications
GOST 2642.5-2016 Refractories and refractory raw materials. Methods for the determination of iron oxide (III)
GOST 2642.11-97 Refractories and refractory raw materials. Methods for determination of potassium and sodium oxides
GOST 3594.4-77 Molding clays. Methods for determining the sulfur content
GOST 5578-94 Crushed stone and sand from slags of ferrous and non-ferrous metallurgy for concrete. Specifications
GOST 5802-86 Building mortars. Test Methods
GOST 8735-88 Sand for construction work. Test Methods
GOST 8736-2014 Sand for construction work. Specifications
GOST 9179-77 Building lime. Specifications
GOST 10178-85 Portland cement and Portland slag cement. Specifications
GOST 10181-2014 Concrete mixes. Test Methods
GOST 10354-82 Polyethylene film. Specifications
GOST 18481-81 Hydrometers and glass cylinders. Specifications
GOST 21216-2014
GOST 21216-2014 Clay raw materials. Test Methods
GOST 22266-2013 Sulphate-resistant cements. Specifications
GOST 23732-2011 Water for concrete and mortar. Specifications
GOST 24211-2008 Additives for concrete and mortars. General specifications
GOST 25328-82 Cement for mortars. Specifications
GOST 25592-91 Ash and slag mixtures for thermal power plants for concrete. Specifications
GOST 25818-2017 Fly ash from thermal power plants for concrete. Specifications
GOST 25820-2000 Lightweight concrete. Specifications
GOST 26633-2015 Heavy and fine-grained concrete. Specifications
GOST 26644-85 Crushed stone and sand from slags of thermal power plants for concrete. Specifications
GOST 30108-94 Construction materials and products. Determination of specific effective activity of natural radionuclides
GOST 30459-2008 Additives for concrete. Methods for determining efficiency
SNiP II-3-79* Construction heat engineering
APPENDIX B (recommended). The mobility of the mortar mixture at the site of application, depending on the purpose of the solution
Table B.1
The main purpose of the solution | Immersion depth of the cone, cm | Mobility grade P |
A Masonry: | ||
For rubble masonry: | ||
vibrated | ||
unvibrated | ||
For masonry made of hollow bricks or ceramic stones | ||
For solid brick masonry; ceramic stones; concrete or light rock stones | ||
For filling voids in masonry and supplying with a mortar pump | ||
For the device of a bed at installation of walls from large concrete blocks and panels; jointing of horizontal and vertical joints in walls made of panels and large concrete blocks | ||
B Facing: | ||
For fastening natural stone slabs and ceramic tiles to a finished brick wall | ||
For fastening facing products of lightweight concrete panels and blocks in the factory | ||
In Plastering: | ||
soil solution | ||
spray solution: | ||
with mechanized application | ||
coating solution: | ||
without plaster | ||
with plaster |
APPENDIX B (mandatory). Clay for mortars. Technical requirements
APPENDIX B
(mandatory)
These technical requirements apply to clay intended for the preparation of mortars.
B.1 Clay specifications
B.1.3 The content of chemical components from the mass of dry clay should not be more than,%:
- sulfates and sulfides in terms of - 1;
- sulfide sulfur in terms of - 0.3;
- mica - 3;
- soluble salts (causing efflorescence and efflorescence):
the amount of iron oxides - 14;
the sum of potassium and sodium oxides is 7.
B.1.4 Clay shall not contain organic impurities in quantities that give a dark color.
B.2 Test methods for clay
B.2.1 The granulometric composition of clay is determined according to GOST 21216.2 and GOST 21216.12. B.2.4 The mica content is determined by the petrographic method according to
Operating conditions of enclosing structures, humidity conditions of premises according to SNiP II-3-79*
Minimum flow cement in masonry mortar per 1 m of dry sand, kg
Under dry and normal room conditions
At wet mode premises
In wet conditions
UDC 666.971.001.4:006.354 | ISS 91.100.10 | ||
Key words: mortars, mineral binders, masonry, installation of building structures; mortars for masonry, facing, plastering |
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Electronic text of the document
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2018
GOST 28013-98
INTERSTATE STANDARD
BUILDING SOLUTIONS
General specifications
INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION
ON STANDARDIZATION, TECHNICAL REGULATION
AND CERTIFICATIONS IN CONSTRUCTION (MNTKS)
Moscow
Foreword
1 DEVELOPED by the State Central Research and Design Institute of Complex Problems of Building Structures and Structures named after. V.A. Kucherenko (TsNIISK named after V.A. Kucherenko)
INTRODUCED by Gosstroy of Russia
2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (ISTCS) on November 12, 1998
|
State name |
Name of the public administration body for construction |
|
Republic of Armenia |
Ministry of Urban Development of the Republic of Armenia |
|
The Republic of Kazakhstan |
Committee on Housing and Construction Policy under the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan |
|
Republic of Kyrgyzstan |
State Inspectorate for Architecture and Construction under the Government of the Kyrgyz Republic |
|
The Republic of Moldova |
Ministry of Territorial Development, Construction and Public Utilities of the Republic of Moldova |
|
the Russian Federation |
Gosstroy of Russia |
|
The Republic of Tajikistan |
Gosstroy of the Republic of Tajikistan |
|
The Republic of Uzbekistan |
Goskomarchitektstroy of the Republic of Uzbekistan |
3 INSTEAD OF GOST 28013-89
4 INTRODUCED from July 1, 1999 as the state standard of the Russian Federation by the Decree of the Gosstroy of Russia dated December 29, 1998 No. 30
INTERSTATE STANDARD
BUILDING SOLUTIONS
General specifications
Introduction date 1999-07-01
1 area of use
This standard applies to mortars based on mineral binders used for masonry and installation of building structures during the construction of buildings and structures, fastening of facing products, plaster.
The standard does not apply to special mortars (heat-resistant, chemically resistant, fire-resistant, heat and waterproofing, grouting, decorative, straining, etc.).
The requirements set out in , , , and this standard are mandatory.
2 Normative references
The normative documents used in this standard are given in.
3 Classification
3.1 Mortars are classified according to:
main purpose;
The binder used;
Medium density.
3.1.1 According to the main purpose, solutions are divided into:
Masonry (including for installation work);
Facing;
Plaster.
3.1.2 According to the binder used, the solutions are divided into:
Simple (on a binder of one type);
Complex (on mixed binders).
3.1.3 According to the average density, the solutions are divided into:
heavy;
Lungs.
An example of a symbol for a heavy mortar, ready for use, masonry, on a lime-gypsum binder, strength grade M100, mobility - P to 2:
Masonry mortar, lime-gypsum, M100, P to 2, GOST 28013-98.
For dry mortar mix, light, plaster, on cement binder, strength grade M50 and mobility - P to 3, medium density D900:
Mix dry mortar plaster, cement, M50, P to 3, D900, GOST 28013-98.
4 General technical requirements
4.1 Mortars are prepared in accordance with the requirements of this standard according to the technological regulations approved by the manufacturer.
4.2 Properties of mortars include properties of mortar mixtures and hardened mortar.
4.2.1 Basic properties of mortar mixtures:
Mobility;
Water holding capacity;
Delamination;
application temperature;
Average density;
Humidity (for dry mortar mixtures).
4.2.2 Main properties of the hardened mortar:
Compressive strength;
Frost resistance;
Average density.
If necessary, additional
indicators for .
Norm of mobility by immersion of the cone, cm
P to
From 1 to 4 incl.
P to 2
St. 4 » 8 »
P to 3
» 8 » 12 »
P to 4
» 12 » 14»
4.4 Water-holding capacity of mortar mixtures should be at least 90%, clay-containing solutions - at least 93%.
4.5 The delamination of freshly prepared mixtures should not exceed 10%.
4.6 The mortar mixture should not contain fly ash of more than 20% of the mass of cement.
4.7 The temperature of mortar mixtures at the time of use should be:
a) masonry mortars for outdoor work - in accordance with the instructions;
b) facing mortars for cladding with glazed tiles at a minimum outdoor temperature, °C, not less than:
from 5 and above .............................................. ................................... 15;
c) plaster mortars at a minimum outdoor temperature, °C, not less than:
from 0 to 5.............................................. .......................................... 15
from 5 and above .............................................. ..................................... 10.
table 2
|
mortar mixture temperature, °C, not less than |
||||
|
masonry material |
||||
|
brick |
stones |
|||
|
at wind speed, m/s |
||||
|
until 6 |
St. 6 |
until 6 |
St. 6 |
|
|
Up to minus 10 |
||||
|
From minus 10 to minus 20 |
||||
|
Below minus 20 |
||||
|
Note - For masonry mortar mixtures during installation work, the temperature of the mixture must be 10 ° C higher than indicated in the table |
||||
4.8 The moisture content of dry mortar mixtures should not exceed 0.1% by weight.
4.9 Normalized indicators of the quality of the hardened mortar must be provided at the design age.
For the design age of the mortar, unless otherwise specified in the project documentation, 28 days should be taken for mortars on all types of binders, except for gypsum and gypsum-containing ones.
The design age of mortars on gypsum and gypsum-containing binders is 7 days.
4.10 The compressive strength of mortars at design age is characterized by grades: M4, M10, M25, M50, M75, M100, M150, M200.
The compressive strength grade is assigned and controlled for all types of solutions.
4.11 Frost resistance of solutions is characterized by grades.
For solutions, the following marks for frost resistance are established: F 10, F 15, F 25, F 35, F 50, F 75, F 100, F 150, F 200.
For solutions of grades for compressive strength M4 and M10, as well as for solutions prepared without the use of hydraulic binders, frost resistance grades are not assigned and not controlled.
4.12 Average density, D , hardened solutions at the design age should be, kg / m 3
Heavy solutions .................................................................. .................................. 1500 and more
Light solutions .................................................................. ................................................ less than 1500.
The normalized value of the average density of the solutions is set by the consumer in accordance with the work project.
4.13 Deviation of the average density of the solution in the direction of increase is allowed no more than 10% of the one established by the project.
4.14 Requirements for materials for the preparation of mortars
4.14.1 Materials used for the preparation of mortars must comply with the requirements of standards or specifications for these materials, as well as the requirements of this standard.
Gypsum binders by;
Building lime according to;
Portland cement and slag Portland cement by;
Pozzolanic and sulfate-resistant cements according to;
Cements for mortars according to;
Clay by;
Others, including mixed binders, according to regulatory documents for a specific type of binders.
4.14.3 Binder materials for the preparation of solutions should be selected depending on their purpose, type of structures and conditions of their operation.
4.14.4 The consumption of cement per 1 m 3 of sand in mortars based on cement and cement-containing binders must be at least 100 kg, and for masonry mortars, depending on the type of structures and their operating conditions, not less than that given in.
4.14.5 The content of alkalis in cement binders intended for the preparation of plaster and facing solutions should not exceed 0.6% by weight.
4.14.6 Lime binder is used in the form of hydrated lime (fluff), lime paste, lime milk.
The milk of lime must have a density of at least 1200 kg/m3 and contain at least 30% lime by weight.
Lime binder for plastering and facing mortars must not contain unextinguished lime particles.
Lime dough must have a temperature of at least 5 °C.
4.14.7 The following should be used as a placeholder:
Sand for construction work on;
Fly ash by;
Ash and slag sand by;
Porous sands by;
Sand from slag from thermal power plants by;
Sand from slags of ferrous and non-ferrous metallurgy for concrete according to.
4.14.8 The largest aggregate grain size should be, mm, not more than:
Masonry (except rubble masonry) .............................................. ......................... 2.5
Rubble masonry .................................................. ................................................. ....... 5.00
Plaster (except for the covering layer) .............................................. ................. 2.5
Plaster covering layer .................................................................. ........................... 1.25
Facing .............................................................. ................................................. ...... 1.25
(Changed edition, Rev. No. 1)
4.14.9 When heating aggregates, their temperature, depending on the binder used, should not be higher, °С, when using:
Cement binder ................................................................ ......................................... 60
Cement-lime, cement-clay and clay binder ........ 40
Lime, clay-lime, gypsum and lime-gypsum
binder ………………………………………………………………………... 20.
4.14.10 The content of harmful impurities in aggregates should not exceed the requirements for fine aggregates.
4.14.11 The specific effective activity of natural radionuclides A eff of materials used for the preparation of mortar mixtures should not exceed the limit values depending on the field of application of mortar mixtures according to .
4.14.12 Chemical additives must comply with the requirements.
Additives are introduced into ready-to-use mortar mixtures in the form of aqueous solutions or aqueous suspensions, into dry mortar mixtures - in the form of a water-soluble powder or granules.
4.14.13 Water for mixing mortar mixtures and preparing additives is used according to.
4.14.14 Bulk raw materials for mortar mixtures are dosed by weight, liquid components are dosed by weight or volume.
The dosing error should not exceed ±1% for binders, water and additives, ±2% for aggregates.
For mortar mixing plants with a capacity of up to 5 m 3 / h, volumetric dosing of all materials is allowed with the same errors.
4.15 Marking, packaging
4.15.1 Dry mortar mixtures are packed in polyethylene film bags weighing up to 8 kg or paper bags according to GOST 2226 weighing up to 50 kg.
4.15.2 Packaged dry mortar mixes should be marked on each package. The marking must be clearly marked on the packaging with indelible ink.
4.15.3 Mortar mixtures must have a quality document. The manufacturer must accompany the dry mortar mix with a label or marking applied to the package, and the ready-to-use mortar released into the vehicle with a quality document, which should contain the following data:
Name or trademark and address of the manufacturer;
Conventional designation of mortar according to;
The class of materials used to prepare the mixture, according to the specific effective activity of natural radionuclides and the digital value of A eff;
Brand for compressive strength;
Mobility mark (P to);
The volume of water required for the preparation of the mortar mixture, l / kg (for dry mortar mixtures);
The type and amount of the introduced additive (% of the mass of the binder);
Shelf life (for dry mortar mixes), months;
Weight (for dry mortar mixes), kg;
The amount of the mixture (for mortar mixtures ready for use), m 3
date of preparation;
Application temperature, °С;
Designation of this standard.
If necessary, the marking and the quality document may contain additional data.
The quality document must be signed by the manufacturer's official responsible for technical control.
5 Acceptance rules
5.1 Mortar mixtures should be accepted by the manufacturer's technical control.
5.2 Mortar mixtures and solutions are accepted in batches by carrying out acceptance and periodic control.
A batch of a mortar mixture and a solution is taken as the amount of a mixture of one nominal composition with the same quality of its constituent materials, prepared according to a single technology.
The volume of the batch is set in agreement with the consumer - not less than the output of one shift, but not more than the daily output of the mortar mixer.
5.3 All mortar mixtures and solutions are subject to acceptance control according to all standardized quality indicators.
Mortar mixtures containing air-entraining, foaming and gas-forming additives are not additionally mixed before testing.
5.4.3 Testing of the ready-to-use mortar mixture should begin during the period of maintaining the normalized mobility.
5.5 The mobility and average density of the mortar mixture in each batch is controlled at least once per shift at the manufacturer after unloading the mixture from the mixer.
The moisture content of dry mortar mixtures is controlled in each batch.
The strength of the solution is determined in each batch of the mixture. The normalized technological indicators of the quality of the mortar mixtures provided for in the supply contract (average density, temperature, stratification, water-holding capacity), and the frost resistance of the mortar are controlled in time as agreed with the consumer, but at least once every 6 months, as well as when the quality of the initial materials, composition of the solution and technology of its preparation.
5.6 Radiation-hygienic assessment of materials used for the preparation of mortar mixtures is carried out according to the quality documents issued by the enterprises - suppliers of these materials.
In the absence of data on the content of natural radionuclides, the manufacturer once a year, as well as at each change of supplier, determines the specific effective activity of natural radionuclides A eff of materials according to .
5.7 Mortar mixtures ready for use are dispensed and taken by volume. The volume of the mortar mixture is determined by the output of the mortar mixer or by the volume of the transport or measuring tank. Dry mortar mixtures are dispensed and taken by weight.
5.8 If, when checking the quality of the mortar, a discrepancy is revealed with at least one of the technical requirements of the standard, this batch of mortar is rejected.
5.9 The consumer has the right to carry out a control check of the quantity and quality of the mortar mixture in accordance with the requirements of this standard for methods.
5.10 The manufacturer is obliged to inform the consumer, at his request, of the results of control tests no later than 3 days after their completion, and in case of non-confirmation of the normalized indicator, inform the consumer immediately.
6 Control methods
6.1 Samples of mortar mixtures are taken in accordance with the requirements, and.
6.2 Materials for the preparation of mortar mixtures are tested in accordance with the requirements of the standards and specifications for these materials.
6.3 The quality of chemical additives is determined in terms of the effectiveness of their action on the properties of mortars according to.
6.4 The concentration of the working solution of additives is determined by a hydrometer according to GOST 18481 in accordance with the requirements of standards and specifications for additives of specific types.
6.5 The specific effective activity of natural radionuclides A eff in materials for the preparation of mortar mixtures is determined by .
6.6 Mobility, average density, water-holding capacity and stratification of mortar mixtures are determined by.
6.7 The volume of air involved in mortar mixtures is determined by .
(Changed edition, Rev. No. 1)
6.8 The temperature of freshly prepared mortar mixtures is measured with a thermometer, immersing it in the mixture to a depth of at least 5 cm.
6.9 Compressive strength, frost resistance and average density of hardened solutions are determined by.
6.10 The moisture content of dry mortar mixtures is determined by.
7 Transport and storage
7.1 Transportation
7.1.1 Ready-to-use mortar mixtures should be delivered to the consumer in vehicles specially designed for their transportation.
With the consent of the consumer, transportation of mixtures in bunkers (buckets) is allowed.
7.1.2 The methods used for transporting mortar mixtures should exclude the loss of astringent dough, the ingress of atmospheric precipitation and impurities into the mixture.
7.1.3 Packed dry mortar mixes are transported by road, rail and other modes of transport in accordance with the rules for the carriage and securing of goods in force for this type of transport.
7.2 Storage
7.2.1 Mortar mixtures delivered to the construction site, ready for use, must be reloaded into mixers or other containers, provided that the specified properties of the mixtures are preserved.
7.2.2 Packed mortar dry mixes are stored in covered dry rooms.
Bags with a dry mix should be stored at a temperature not lower than 5°C under conditions that ensure the safety of the packaging and protection from moisture.
7.2.3 The shelf life of the dry mortar mixture is 6 months from the date of preparation.
At the end of the shelf life, the mixture should be checked for compliance with the requirements of this standard. In case of compliance, the mixture can be used for its intended purpose.
APPENDIX A
(reference)
List of regulatory documents
SPKP. Construction. Building solutions. Nomenclature of indicators
Gypsum binders. Specifications
GOST 2226-88 Paper bags. Specifications
Refractories and refractory raw materials. Methods for the determination of iron oxide
Refractories and refractory raw materials. Methods for determination of potassium and sodium oxides
GOST 3594.4-77 Molding clays. Methods for determining the sulfur content
Crushed stone and sand from slags of ferrous and non-ferrous metallurgy for concrete. Specifications
Building solutions. Test Methods
Sand for construction work. Test Methods
Sand for construction work. Specifications
Building lime. Specifications
Portland cement and slag Portland cement. Specifications
Concrete mixes. Test Methods
The film is polyethylene. Specifications
GOST 18481-81 Hydrometers and glass cylinders. Specifications
Clay material. Method for determination of fine fractions
Clay material. Method for determining the residue on a sieve with mesh No. 0063
The cements are sulfate resistant. Specifications
Water for concretes and mortars. Specifications
Additives for concrete. General technical requirements
Cement for mortars. Specifications
Mixtures of ash and slag from thermal power plants for concrete. Specifications
Fly ash from thermal power plants for concrete. Specifications
Concrete is light. Specifications
Concrete is heavy and fine-grained. Specifications
Crushed stone and sand from slags of thermal power plants for concrete. Specifications
Construction materials and products. Determination of specific effective activity of natural radionuclides
Additives for concrete. Methods for determining efficiency
* Building heat engineering
(Changed edition, Rev. No. 1)
APPENDIX B
The mobility of the mortar mixture at the site of application, depending on the purpose of the solution
Table B.1
|
The main purpose of the solution |
Immersion depth of the cone, cm |
Mobility grade P to |
|
A Masonry: |
||
|
For rubble masonry: |
||
|
vibrated |
||
|
unvibrated |
||
|
For masonry made of hollow bricks or ceramic stones |
||
|
For solid brick masonry; ceramic stones; concrete or light rock stones |
||
|
For filling voids in masonry and supplying with a mortar pump |
||
|
For the device of a bed at installation of walls from large concrete blocks and panels; jointing of horizontal and vertical joints in walls made of panels and large concrete blocks |
||
|
B Facing: |
||
|
For fastening natural stone slabs and ceramic tiles to a finished brick wall |
||
|
For fastening facing products of lightweight concrete panels and blocks in the factory |
||
|
In Plastering: |
||
|
soil solution |
||
|
spray solution: |
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when applied manually |
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with mechanized application |
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coating solution: |
Minimum consumption of cement in masonry mortar per 1 m 3 of dry sand, kg |
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Under dry and normal room conditions |
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In humid conditions |
1251 Scope |
GOST 28013-98. Building solutions. General specifications
When performing construction work, they are used different kinds cement mixtures, which are a common building material. They contain Portland cement, filler and water mixed in certain proportions. but professional builders when erecting walls and performing finishing, a cement-lime mortar is used, GOST for which regulates the main technical requirements for this building material. Let us dwell on the advantages and varieties of mixtures, the features of preparation.
Cement-lime mortar GOST 28013-98 - purpose and benefits
Standard mortar based on Portland cement, regardless of the brand of binder used, quickly hardens, and also has increased rigidity and insufficient adhesion. The lime mortar produced in accordance with the requirements of GOST is devoid of these disadvantages.
It is used to perform various types of work:
- wall masonry. The properties of the composition make it possible to reliably bind the materials used for masonry, as well as to avoid the appearance of unwanted cracks after the final hardening;
- exterior wall finishes and internal plaster. Thanks to lime, cement-lime plaster GOST 28013-98 helps maintain comfortable humidity, as well as bactericidal treatment of walls.
Mostly masonry mortars for walls consist of lime and cement
Masonry mortar and cement sand plaster, GOST for which is relevant, have a set of advantages:
- increased plasticity compared to traditionally used cement mixtures. The mobility of the mortar mixture allows you to fill the gaps well, since the material better envelops the building materials used for masonry;
- extended hardening period. The finished lime mixture is used within 3 hours after preparation, which is three times the period of application of the cement composition;
- increased adhesion. Construction material adheres well to various types of substrates. Are not an exception wooden surfaces on which it is problematic to apply a cement composition;
- bactericidal properties. While doing interior decoration premises and finishing brickwork increased sanitary conditions of the base are provided;
- acceptable price. Cost level for independent production lime-cement composition is 2.5–3.5 times lower than the cost of purchasing factory-made plaster;
- crack resistance. A plaster mortar made according to GOST after final hardening and a set of operational strength is easily drilled, while maintaining the integrity of the plaster;
- ability to support optimal humidity indoors. Walls covered with such plaster have unique properties that allow maintaining a comfortable concentration of moisture.
Due to the complex of advantages, lime mixtures are used by professional builders.
Dry cement-sand plaster mixes (GOST 28013-98) - mixing technology
To prepare the lime composition, the following ingredients are required:
- Portland cement;
Masonry mortar for bricks is not picky and coarse sand is used in its production, and the plaster mortar does not accept coarse abrasive materials
- fine sand;
- slaked lime.
Water is also needed, which is added during kneading. Modifiers are introduced to improve performance. Lime is introduced in various consistencies:
- powdered. The slaked material in the form of a white powder is also called fluff by builders;
- pasty. Lime paste is formed by the reaction of water with quicklime in a ratio of 1:2;
- liquid. When lime is diluted with water in a ratio of 1: 1, the so-called milk of lime.
In production concrete compositions a proven technology is used, according to which the ingredients are mixed in certain ratios. In this case, Portland cement of a certain brand is used.
For example, on the basis of cement brand M400, you can prepare different mixtures:
- the composition of the M75 brand is prepared by mixing Portland cement, sand and lime, in a ratio of 2:10:1;
- the M50 mixture contains a reduced amount of cement, which is mixed with sand and lime in a ratio of 1:8:1.
The proportions of the components are associated not only with the brand of cement, but also differ for different mixtures. So, lime mortar grade 4, specifications which is quite low, is prepared on the basis of cement of low grades. This, accordingly, is reflected in the strength. And the most durable composition of the M200 brand requires the use of high-quality cement.
When kneading plaster material for walls, the proportion of fine-grained sand should be carefully controlled
To perform the work, it is necessary to prepare equipment and tools:
- a concrete mixer that allows you to mix increased volumes;
- capacity for components used in manual mixing;
- electric drill with a nozzle for mixing, facilitating the work;
- sieve for separation of foreign inclusions;
- buckets and shovels for loading components when kneading.
The kneading algorithm is quite simple:
- Deliver to the work site all components in the quantities necessary for cooking lime mortar required brand.
- Prepare the solution by mixing slaked lime with water. Introduce water to a milky consistency, remove the remaining lumps with a sieve.
- Mix Portland cement with pre-sifted river sand until a homogeneous consistency is reached.
- Introduce milk of lime into the resulting composition, mix again. At increased density, gradually add water.
GOST 28013-98
INTERSTATE STANDARD
BUILDING SOLUTIONS
General specifications
INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION
ON STANDARDIZATION, TECHNICAL REGULATION
AND CERTIFICATIONS IN CONSTRUCTION (MNTKS)
Moscow
Foreword
1 DEVELOPED by the State Central Research and Design Institute of Complex Problems of Building Structures and Structures named after. V.A. Kucherenko (TsNIISK named after V.A. Kucherenko)
INTRODUCED by Gosstroy of Russia
2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (ISTCS) on November 12, 1998
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State name |
Name of the public administration body for construction |
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Republic of Armenia |
Ministry of Urban Development of the Republic of Armenia |
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The Republic of Kazakhstan |
Committee on Housing and Construction Policy under the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan |
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Republic of Kyrgyzstan |
State Inspectorate for Architecture and Construction under the Government of the Kyrgyz Republic |
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The Republic of Moldova |
Ministry of Territorial Development, Construction and Public Utilities of the Republic of Moldova |
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the Russian Federation |
Gosstroy of Russia |
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The Republic of Tajikistan |
Gosstroy of the Republic of Tajikistan |
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The Republic of Uzbekistan |
Goskomarchitektstroy of the Republic of Uzbekistan |
3 INSTEAD OF GOST 28013-89
4 INTRODUCED from July 1, 1999 as the state standard of the Russian Federation by the Decree of the Gosstroy of Russia dated December 29, 1998 No. 30
INTERSTATE STANDARD
BUILDING SOLUTIONS
General specifications
MORTARS
General specifications
Introduction date 1999-07-01
1 area of use
This standard applies to mortars based on mineral binders used for masonry and installation of building structures during the construction of buildings and structures, fastening of facing products, plaster.
The standard does not apply to special mortars (heat-resistant, chemically resistant, fire-resistant, heat and waterproofing, grouting, decorative, straining, etc.).
The requirements set out in , , , and this standard are mandatory.
2 Normative references
The normative documents used in this standard are given in.
3 Classification
3.1 Mortars are classified according to:
main purpose;
The binder used;
Medium density.
3.1.1 According to the main purpose, solutions are divided into:
Masonry (including for installation work);
Facing;
Plaster.
3.1.2 According to the binder used, the solutions are divided into:
Simple (on a binder of one type);
Complex (on mixed binders).
3.1.3 According to the average density, the solutions are divided into:
heavy;
Lungs.
An example of a symbol for a heavy mortar, ready for use, masonry, on a lime-gypsum binder, strength grade M100, mobility - P to 2:
Masonry mortar, lime-gypsum, M100, P to 2, GOST 28013-98.
For dry mortar mix, light, plaster, on cement binder, strength grade M50 and mobility - P to 3, medium density D900:
Mix dry mortar plaster, cement, M50, P to 3, D900, GOST 28013-98.
4 General technical requirements
4.1 Mortars are prepared in accordance with the requirements of this standard according to the technological regulations approved by the manufacturer.
4.2 Properties of mortars include properties of mortar mixtures and hardened mortar.
4.2.1 Basic properties of mortar mixtures:
Mobility;
Water holding capacity;
Delamination;
application temperature;
Average density;
Humidity (for dry mortar mixtures).
4.2.2 Main properties of the hardened mortar:
Compressive strength;
Frost resistance;
Average density.
If necessary, additional
Norm of mobility by immersion of the cone, cm
From 1 to 4 incl.
4.4 Water-holding capacity of mortar mixtures should be at least 90%, clay-containing solutions - at least 93%.
4.5 The delamination of freshly prepared mixtures should not exceed 10%.
4.6 The mortar mixture should not contain fly ash of more than 20% of the mass of cement.
4.7 The temperature of mortar mixtures at the time of use should be:
a) masonry mortars for outdoor work - in accordance with the instructions;
b) facing mortars for cladding with glazed tiles at a minimum outdoor temperature, °C, not less than:
from 5 and above .............................................. ................................... 15;
c) plaster mortars at a minimum outdoor temperature, °C, not less than:
from 0 to 5.............................................. .......................................... 15
from 5 and above .............................................. ..................................... 10.
table 2
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mortar mixture temperature, °C, not less than |
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masonry material |
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at wind speed, m/s |
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Up to minus 10 |
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From minus 10 to minus 20 |
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Below minus 20 |
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Note - For masonry mortar mixtures during installation work, the temperature of the mixture must be 10 ° C higher than indicated in the table |
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4.8 The moisture content of dry mortar mixtures should not exceed 0.1% by weight.
4.9 Normalized indicators of the quality of the hardened mortar must be provided at the design age.
For the design age of the mortar, unless otherwise specified in the project documentation, 28 days should be taken for mortars on all types of binders, except for gypsum and gypsum-containing ones.
The design age of mortars on gypsum and gypsum-containing binders is 7 days.
4.10 The compressive strength of mortars at design age is characterized by grades: M4, M10, M25, M50, M75, M100, M150, M200.
The compressive strength grade is assigned and controlled for all types of solutions.
4.11 Frost resistance of solutions is characterized by grades.
For solutions, the following marks for frost resistance are established: F 10, F 15, F 25, F 35, F 50, F 75, F 100, F 150, F 200.
For solutions of grades for compressive strength M4 and M10, as well as for solutions prepared without the use of hydraulic binders, frost resistance grades are not assigned and not controlled.
4.12 Average density, D , hardened solutions at the design age should be, kg / m 3
Heavy solutions .................................................................. .................................. 1500 and more
Light solutions .................................................................. ................................................ less than 1500.
The normalized value of the average density of the solutions is set by the consumer in accordance with the work project.
4.13 Deviation of the average density of the solution in the direction of increase is allowed no more than 10% of the one established by the project.
4.14 Requirements for materials for the preparation of mortars
4.14.1 Materials used for the preparation of mortars must comply with the requirements of standards or specifications for these materials, as well as the requirements of this standard.
Gypsum binders according to GOST 125;
Building lime according to GOST 9179;
Portland cement and slag Portland cement according to GOST 10178;
Pozzolanic and sulfate-resistant cements according to GOST 22266;
Cements for mortars according to GOST 25328;
Ash and slag sand according to GOST 25592;
Sand from slag from thermal power plants according to GOST 26644;
Sand from slags of ferrous and non-ferrous metallurgy for concrete according to GOST 5578.
4.14.8 The largest aggregate grain size should be, mm, not more than:
Masonry (except rubble masonry) .............................................. ......................... 2.5
Rubble masonry .................................................. ................................................. ....... 5.00
Plaster (except for the covering layer) .............................................. ................. 2.5
Plaster covering layer .................................................................. ........................... 1.25
Facing .............................................................. ................................................. ...... 1.25
(Changed edition, Rev. No. 1)
4.14.9 When heating aggregates, their temperature, depending on the binder used, should not be higher, °С, when using:
Cement binder ................................................................ ......................................... 60
Cement-lime, cement-clay and clay binder ........ 40
Lime, clay-lime, gypsum and lime-gypsum
binder ………………………………………………………………………... 20.
4.14.10 The content of harmful impurities in aggregates should not exceed the requirements of GOST 26633 for fine aggregates.
4.14.11 The specific effective activity of natural radionuclides A eff of materials used for the preparation of mortar mixtures should not exceed the limit values depending on the field of application of mortar mixtures in accordance with GOST 30108.
4.14.12 Chemical additives must comply with the requirements of GOST 24211.
Additives are introduced into ready-to-use mortar mixtures in the form of aqueous solutions or aqueous suspensions, into dry mortar mixtures - in the form of a water-soluble powder or granules.
4.14.13 Water for mixing mortar mixtures and preparing additives is used in accordance with GOST 23732.
4.14.14 Bulk raw materials for mortar mixtures are dosed by weight, liquid components are dosed by weight or volume.
The dosing error should not exceed ±1% for binders, water and additives, ±2% for aggregates.
For mortar mixing plants with a capacity of up to 5 m 3 / h, volumetric dosing of all materials is allowed with the same errors.
4.15 Marking, packaging
4.15.1 Dry mortar mixtures are packed in polyethylene film bags according to GOST 10354 weighing up to 8 kg or paper bags according to GOST 2226 weighing up to 50 kg.
4.15.2 Packaged dry mortar mixes should be marked on each package. The marking must be clearly marked on the packaging with indelible ink.
4.15.3 Mortar mixtures must have a quality document. The manufacturer must accompany the dry mortar mix with a label or marking applied to the package, and the ready-to-use mortar released into the vehicle with a quality document, which should contain the following data:
Name or trademark and address of the manufacturer;
Conventional designation of mortar according to;
The class of materials used to prepare the mixture, according to the specific effective activity of natural radionuclides and the digital value of A eff;
Brand for compressive strength;
Mobility mark (P to);
The volume of water required for the preparation of the mortar mixture, l / kg (for dry mortar mixtures);
The type and amount of the introduced additive (% of the mass of the binder);
Shelf life (for dry mortar mixes), months;
Weight (for dry mortar mixes), kg;
The amount of the mixture (for mortar mixtures ready for use), m 3
date of preparation;
Application temperature, °С;
Designation of this standard.
If necessary, the marking and the quality document may contain additional data.
The quality document must be signed by the manufacturer's official responsible for technical control.
5 Acceptance rules
5.1 Mortar mixtures should be accepted by the manufacturer's technical control.
5.2 Mortar mixtures and solutions are accepted in batches by carrying out acceptance and periodic control.
A batch of a mortar mixture and a solution is taken as the amount of a mixture of one nominal composition with the same quality of its constituent materials, prepared according to a single technology.
The volume of the batch is set in agreement with the consumer - not less than the output of one shift, but not more than the daily output of the mortar mixer.
5.3 All mortar mixtures and solutions are subject to acceptance control according to all standardized quality indicators.
Mortar mixtures containing air-entraining, foaming and gas-forming additives are not additionally mixed before testing.
5.4.3 Testing of the ready-to-use mortar mixture should begin during the period of maintaining the normalized mobility.
5.5 The mobility and average density of the mortar mixture in each batch is controlled at least once per shift at the manufacturer after unloading the mixture from the mixer.
The moisture content of dry mortar mixtures is controlled in each batch.
The strength of the solution is determined in each batch of the mixture. The normalized technological indicators of the quality of the mortar mixtures provided for in the supply contract (average density, temperature, stratification, water-holding capacity), and the frost resistance of the mortar are controlled in time as agreed with the consumer, but at least once every 6 months, as well as when the quality of the initial materials, composition of the solution and technology of its preparation.
5.6 Radiation-hygienic assessment of materials used for the preparation of mortar mixtures is carried out according to the quality documents issued by the enterprises - suppliers of these materials.
In the absence of data on the content of natural radionuclides, the manufacturer once a year, as well as at each change of supplier, determines the specific effective activity of natural radionuclides A eff of materials according to GOST 30108.
5.7 Mortar mixtures ready for use are dispensed and taken by volume. The volume of the mortar mixture is determined by the output of the mortar mixer or by the volume of the transport or measuring tank. Dry mortar mixtures are dispensed and taken by weight.
5.8 If, when checking the quality of the mortar, a discrepancy is revealed with at least one of the technical requirements of the standard, this batch of mortar is rejected.
5.9 The consumer has the right to carry out a control check of the quantity and quality of the mortar mixture in accordance with the requirements of this standard according to the methods of GOST 5802.
5.10 The manufacturer is obliged to inform the consumer, at his request, of the results of control tests no later than 3 days after their completion, and in case of non-confirmation of the normalized indicator, inform the consumer immediately.
6 Control methods
6.1 Samples of mortar mixtures are taken in accordance with the requirements, and.
6.2 Materials for the preparation of mortar mixtures are tested in accordance with the requirements of the standards and specifications for these materials.
6.3 The quality of chemical additives is determined in terms of the effectiveness of their action on the properties of mortars in accordance with GOST 30459.
6.4 The concentration of the working solution of additives is determined by a hydrometer according to GOST 18481 in accordance with the requirements of standards and specifications for additives of specific types.
6.5 The specific effective activity of natural radionuclides A eff in materials for the preparation of mortar mixtures is determined according to GOST 30108.
6.6 Mobility, average density, water-holding capacity and stratification of mortar mixtures are determined according to GOST 5802.
6.7 The volume of air involved in mortar mixtures is determined according to GOST 10181.
(Changed edition, Rev. No. 1)
6.8 The temperature of freshly prepared mortar mixtures is measured with a thermometer, immersing it in the mixture to a depth of at least 5 cm.
6.9 Compressive strength, frost resistance and average density of hardened solutions are determined according to GOST 5802.
6.10 The moisture content of dry mortar mixtures is determined according to GOST 8735.
7 Transport and storage
7.1 Transportation
7.1.1 Ready-to-use mortar mixtures should be delivered to the consumer in vehicles specially designed for their transportation.
With the consent of the consumer, transportation of mixtures in bunkers (buckets) is allowed.
7.1.2 The methods used for transporting mortar mixtures should exclude the loss of astringent dough, the ingress of atmospheric precipitation and impurities into the mixture.
7.1.3 Packed dry mortar mixes are transported by road, rail and other modes of transport in accordance with the rules for the carriage and securing of goods in force for this type of transport.
7.2 Storage
7.2.1 Mortar mixtures delivered to the construction site, ready for use, must be reloaded into mixers or other containers, provided that the specified properties of the mixtures are preserved.
7.2.2 Packed mortar dry mixes are stored in covered dry rooms.
Bags with a dry mix should be stored at a temperature not lower than 5°C under conditions that ensure the safety of the packaging and protection from moisture.
7.2.3 The shelf life of the dry mortar mixture is 6 months from the date of preparation.
At the end of the shelf life, the mixture should be checked for compliance with the requirements of this standard. In case of compliance, the mixture can be used for its intended purpose.
APPENDIX A
(reference)
List of regulatory documents
B.2.2 The content of sulfates and sulfides in terms of SO 3 determined according to GOST 3594.4.
B.2.3 The content of sulfide sulfur in terms of SO 3 determined according to GOST 3594.4. SNiP II-3-79 *
Minimum consumption of cement in masonry mortar per 1 m 3 of dry sand, kg
Under dry and normal room conditions
In humid conditions
In wet conditions
Key words: mortars, mineral binders, masonry, installation of building structures; mortars for masonry, facing, plastering