Consumption of finishing materials. Required material consumption for a semi-dry floor screed Construction materials consumption per m2

At self-fulfillment repair work need to be able to calculate the cost building materials. This will help save money when buying them. The consumption of cement per 1 m2 of plaster depends on the quality of the surface on which we will apply the mortar, the technical characteristics of the mixture and the texture of the resulting coating.

Consider how to independently determine the consumption of the mixture, depending on the thickness of the layer and the type of plaster used.

Plaster mixtures used for wall decoration differ in the presence of certain components in the composition and their ratio. Subdivided into types:

The cement composition is most often used for rough wall decoration. Thin layer cracks during operation, therefore it is recommended to apply cement-sand mortars with a thickness of 3 to 6 cm, depending on the material from which the walls are made and the technology used for applying plaster.

What affects the consumption of materials

The consumption of cement for wall plastering can be easily calculated independently. Consumption is determined based on the following components:

• type of solution and its components;
• how even the walls are, and what material they are built from.

AT high-rise buildings the deviation of the plane in terms of level is 2-2.5 cm. The greater the roughness of the surface, the more thick layer will have to be applied.

To reduce the consumption of the plaster mixture, the surface is treated with a primer in several layers. It contributes to the dedusting of the surface, reducing the absorbency and better adhesion of materials.

At the junction of two surfaces made of different materials, we mount a construction mesh. Because of this, a thicker layer of plaster is required.

In the houses of the old building, you can find perfectly even walls, but more often the walls in them are crooked.

Calculate the layer thickness

We determine the difference in the surface relative to the vertical plane using a plumb line or the installation of beacons.

Methods for determining the curvature of walls:

• we lower the plumb line from the ceiling, find the most protruding point of the wall, then measure the depth of the depressions.
• as lighthouses we use long even slats; we apply them to the wall, and we see how curved it is; measuring holes in the wall.

For clarity, we give an example of calculating the layer thickness cement plaster for a 12 sq. m.

We add up the depth indicators of the depressions on the walls and divide the result by the number of beacons: (2 + 3 + 4 + 5): 4 \u003d 3.5 cm. The thickness of the plaster layer will be equal to 3.5 cm.

Standard consumption rates

In one bag 25 kg

The average consumption of cement for plaster is indicated on the package, taking into account a layer of 10 mm, it is individual for each manufacturer. If we apply the solution with a thickness of 2 cm, then we multiply the quantity by 2, etc. For plaster, the average consumption is 8.5 kg per sq.m.

If we take a bag of 25 kg, then 8.5:25 \u003d 0.34% of the amount of the bag will disperse the plaster per 1 m2.

Consider in the table the calculation of cement consumption for wall plastering, depending on the thickness of the applied layer at standard rate consumption of 8.5 kg per sq. m:

Marble chips give the mixture "Bark beetle" a relief

Composition for finishing plaster The bark beetle incorporates marble chips, thanks to which a relief surface with an interesting structure is obtained. Standard consumption ranges from 2.5 to 4 kg. Each manufacturer indicates these indicators on the label.

Venetian plaster is applied with a layer of several millimeters, due to this, a small consumption of the mixture is obtained from 70 to 200 grams per square meter. m. Working with such material requires experience in order to qualitatively apply it to the surface, it is better to invite a professional.

Gypsum compositions are consumed in the ratio of 9 kg per sq. m.

When buying a plaster mixture, you need to add 10% to the estimated amount of material so that in the process of performing work you do not have to run to the store.

We plaster with our own hands

Plaster consumption calculator

At the same time, we will talk about a minimum layer of 10 millimeters, because if someone needs more, it is enough to multiply the indicator by the corresponding figure. We will not consider the quantity in bags, since packaging is usually typical. If you need, say, 230 kilograms of cement for 10 squares, and only 50 kilogram bags are sold, in any case you will have to buy 5 bags.

Let's start with cement mortar. Since it is used mainly as a draft, and is completely unsuitable for decorative finishes, except perhaps as a basis for painting walls, this composition is always applied in a solid layer. Considering that thin cement-sand coating cracks easily, its minimum thickness should be within 3 centimeters. And if special beacon profiles are used, then the wall is covered with mortar to their height, that is, no less than 6 centimeters. For 1 square with a thickness of 1 centimeter cement mixture you need an average of 17 kilograms.

The gypsum composition is lighter, consists of fine-grained components that provide high density coatings and help to effectively smooth out irregularities. In fact, this type of finish is almost universal, and is suitable even for external works, however, it should be borne in mind that the material, for all its plasticity, hardens very quickly, which is why it has to be kneaded in small portions. Thanks to light components per 1 square meter walls with a layer thickness of 10 millimeters, about 9 kilograms are required gypsum mixture.

Compound bark beetle among the components it has a crumb of natural stone, which provides the relief of the coating, and depending on the size of the fractions, the mass of the applied material changes. The consumption of plaster per 1 m 2 usually does not go beyond 2.5-4 kilograms, provided that the thickness of the finish is centimeter, although in reality a layer no larger than the size of the grain is required. It is recommended to pay attention to the information provided by the manufacturer. You should also take into account possible flaws in the work and have some stock of material, at least about 5%.

As decorative, designed for the finest finishes. With its help, imitations of stone, wood are created, it serves as the basis for frescoes. In the finished state, it looks like a pasty mixture, on the wall it becomes almost transparent coating, although it can be multi-layered, depending on what effect is required. In any case, the layer thickness does not exceed a couple of millimeters, so the Venetian consumption per square meter is approximately 70 to 200 grams.

3

Since we are talking about a leveling mortar, it is necessary to determine with a sufficient degree of accuracy how much material is required per wall. It is undesirable to make calculations for the whole room at once, since the curvature of all surfaces can be different. We count by key points, which should be at least three for the entire area of ​​\u200b\u200bthe wall. We set the beacons according to the level and see how significant the deviations are in the marked places. For example, at one of the points the depth of the excavation is 5 centimeters, in another place 2, and somewhere else all 6.

There can be many marks, the main thing is to take measurements everywhere, then add the results and divide by the number of points. For example, the total number of key beacons is 10, the sum of deviations was 42 centimeters, we determine the average layer thickness 42/10 = 4.2 centimeters. It is this value that applies to the main part of the surface, only in some places it will be necessary to increase the thickness of the coating to 6 centimeters, and somewhere it will turn out to be only twenty millimeters. However, as mentioned above, if beacon rails are used for work, the layer must be flush with them.

Calculations of the amount of plaster for finished composition and obtained locally from a dry mix are different, in the first case it is best to navigate according to the data indicated on the container.

Knowing the thickness of the finish, it remains only to calculate exactly how many materials are needed for the leveling mixture. As a rule, in this case, the special one helps out best. However, you can act the old fashioned way, focusing on proportions. Standard list of components: cement, sand, water and plasticizer. The first two components are combined in proportions of 1 part to 4 of the total volume of plaster, if the binder has the M-400 brand, but if you have a more expensive version of the M-500, then the ratio will be different - 1: 5. Just enough water is required for the solution to acquire the consistency of sour cream of medium density, a plasticizer (for example, liquid soap) half a glass is enough. Further, it is not difficult to calculate the consumption of cement per 1 m 2 of plaster, knowing how much already mixed mortar goes to this area.

If you decide to repair the apartment yourself, then in order to determine the financial costs, as well as the volume of material necessary for the purchase, you need to calculate the plaster consumption per 1 m 2.

However, if you hire third-party specialists for repairs, knowledge general principles calculating the consumption of building materials will not be superfluous. After all, knowing how to calculate required amount raw materials, you will be able to more precisely control your financial costs.

Represents one of the most simple ways interior decoration. Traditionally, cement or lime mortars. At the same time, there are many special blends on the market today.

They allow not only to effectively level the walls, but also to give surfaces various decorative effects with the help.

The specificity of the use of mixtures is due to the fact that before starting work it is rather difficult to say exactly how much material is needed to level the surface.

In this material, we will try to describe as clearly as possible the methodology by which the material is calculated.

To begin with, let's decide what the consumption of building material depends on.

Factors affecting the amount of material

So, what factors influence the amount of material.

There are two main factors:

1. Curvature of the walls. How much the surface plane deviates from the vertical or horizontal depends on how much material is needed in order to. In new houses, the deviation can reach 20-25 mm.

Surface curvature check

But in the houses of the old housing stock, surprises are possible - you can meet how ideal flat surfaces, and walls with uneven curvature, installing beacons on which is a real torment.

2. Type. Depending on which mixture will be used, the rate of use is different.

So, after we have decided on the nuances, we can proceed directly to the method of calculating the required volume.

Method of calculation

Plaster consumption per 1 m2 is calculated as follows.

Calculate the required layer thickness.

Example of layer thickness calculation

In order to understand the method of calculating the layer thickness, we will give an example.

Let's say you need to finish a surface of 10 m², evenly heaped up by 50 mm (maximum deviation is 5 cm).

• When hanging at three points, we get deviations of 1 cm, 3 cm and 5 cm.
• To summarize: 1 cm + 3 cm + 5 cm = 9 cm.
• We divide by the number of fixed points: 9 cm: 3 \u003d 3 cm.
• As we can see, for uniform coverage it is necessary to apply an average layer of 3 cm (1 cm is the thinnest layer, 5 cm is the maximum layer).

Note! When leveling with beacons, the minimum layer thickness must be 6 mm (beacon height).

lighthouse profile

So, we have defined the middle layer. It's time to ask the manufacturer's recommendations: most often, the consumption of plaster per m 2, subject to application with a layer of 10 mm, is indicated on the package. If you purchased a quality branded mixture, there should be no problems at this stage.

Let's continue with our example. Let's say that we choose a dry mix based on the Knauf Rotband gypsum binder as the material. The manufacturer indicates that plastering 1 m 2 of the surface with a layer of 10 mm will require 8.5 kg of dry mix.

Instructions for doing the calculation yourself:

8.5 kg (norm) * 3 cm (average thickness) = 25.5 kg.

As a result, we got the consumption of the Knauf Rotband mixture for finishing a square meter of surface, equal to 25.5 kg.

In order to cover the entire surface of 10 m 2 we need:

10 m 2 (surface area) * 25.5 kg (amount per 1 m 2) \u003d 255 kg.

This mix is ​​packed up in bags on 30 kg. We calculate how many bags we need to purchase in order to cover the surface.

255 kg (required amount of mix) : 30 kg (bag volume) = 8.5

We round up (since the actual amount of the mixture is always more than the calculated one) and we get 9 bags. It is this amount of dry mix that we need to purchase for work.

As you can see this technique is quite simple and will help you determine the required amount of material for the purchase. And even if you do not level the wall yourself, but hire specialists, control has never harmed anyone!

Consumption rates of various types of mixture

As mentioned above, the type of mixture determines the rate per 1m 2:

• For the simplest gypsum mixture, the consumption per 1 m 2 when applying a layer of 10 mm is 9 kg.
• For cement - is 16-18 kg / m 2.
• The decorative mass is consumed in the amount of about 8 kg/m 2 , but the exact amount depends on the type.
• The consumption of "Bark beetle" (finishing material for facades) is 2.5-3 kg / m 2.

(Please note! These figures are for a layer of 1 mm)

Decorative coating "Bark beetle" (price - from 360 rubles)

Outcome

However, if calculating the required amount of material is difficult for you, you can use one of the online consumption calculators. These programs allow you to calculate the required amount of material, provided that you have decided on the type, you know the area of ​​\u200b\u200bthe walls to be processed and the estimated layer thickness.

We hope that the this material the technique will be useful to you when carrying out repairs, the question “How to calculate the amount of plaster?” won't confuse you! It remains for us to offer you a useful video in this article.

The most affordable and easiest way to level walls is to plaster them. Before buying certain building materials, you need to know how many of them will be required for a given area. Before starting work, we recommend that you perform an accurate calculation of the plaster consumption per 1m2, so as not to make a mistake with the purchase of the required amount consumable. Using our plaster consumption calculator, you will avoid delays in work and material waste that will inevitably arise when buying insufficient or too much a large number mixtures.

When filling in the fields of the online calculator, the initial curvature of the surfaces per 1m2 is taken into account (the plaster layer depends on the parameter) and the type of materials used. When choosing a coating, it is important to know the plaster consumption per 1m2 for a particular type of base. Moreover, the consumption of decorative plaster will differ from the consumption of the main, leveling mixture.

1.Calculator for calculating the consumption of plaster per 1m2

Specify the parameters of the wall for plaster, the brand of your dry mix and the consumption will be calculated automatically.
(Attention! Separate the fraction from the number with a “point”, not a “comma”!)

2. Factors affecting the consumption of the mixture for plaster

Two factors influence certain mixture costs - the type of plaster and the curvature of the walls. Depending on them, the required amount of material is determined.

• Type of plaster depends on the base (concrete, brick, wood, drywall). Therefore, the calculation is carried out for each specific case. Plus, the approximate consumption is prescribed on the packaging.
• Curvature of the walls or deviations vertically, horizontally shows the consumption of plaster per square meter. It is generally accepted that in new panel houses the deviation rate is 20–25 mm.

3. Calculation of plaster

The consumption of mortar for plaster is determined by the appropriate method. First you need to determine the average thickness of the proposed layer. For example, a 10m2 wall with a curvature deviation of 1 is to be finished; 3 and 5 cm (when hung on the surface at 3 points). Next, sum up 1+3+5=9. Then we divide by the total number of points 9:3=3.

As a result, the average layer of plaster is 3 centimeters. In this case, the maximum layer can be 5 cm, and the minimum is about 1 cm. Attention! If surface finishing is carried out along the beacons, then the layer thickness should be equal to the height of the beacons, that is, about 6 - 10 mm. Next, look at the packaging and read the manufacturer's recommendation.

For example, material consumption is carried out - Volma plaster or Knauf Rotband. The packaging says that to cover 1 m2 of the base with a layer of plaster of 10 mm, 8.5 kg of the composition is needed. The consumption of materials for plaster is calculated according to the following formula: 8.5 kg / cm * 3 cm = 25.5 kg per 1 m2 of base. For our entire surface of 10m2, we need 255kg (10m2 multiplied by 25.5kg/m2).

Each mixture is sold in bags with a total weight of 30 kg. Therefore, we calculate the number of bags required for finishing. For this, 255 kg: 30 kg = 8.5 bags. We round the figure to 9. The determination method does not present any difficulties, so there should be no question of how to calculate the amount of plaster.

4. Consumption of plaster depending on its type

Depending on the type of plaster, its consumption is determined. Consider the most popular types mixtures and their estimated consumption.

• Decorative plaster requires 8 kg per 1 m2. However, much depends on the type of decorative mixture. For example, Venetian plaster, the consumption of which will be about 70 to 200 g per 1 m2, requires lower costs.
• The gypsum mixture needs about 9 kg per 1 m2, where the layer should be about 10 mm.
• Rotband requires 8.5 kg per 1 m2, while the layer thickness is 50 mm.
• The cement mixture requires 16–18 kg per 1 m2.
• Bark beetle plaster is spent at the rate of 2.5–3 kg per 1 m2.
• Vetonite requires about 1.5 kg per 1 m2.

In the event that you are confused in all these figures and the calculations cause you difficulties, you can use a typical online calculator. Such programs exist on many construction sites and allow you to determine the amount of material required with a minimum error.

Answer: The cost of construction wall materials, which provide standard indicators of the wall structure in terms of thermal conductivity and in terms of heat transfer resistance coefficient, can be calculated based on the cost and consumption indicators of a particular material. Depending on the choice of a particular material, the cost per square meter of a wall structure can fluctuate in one direction or another within 10-30%. Therefore, it is possible to talk about the exact figures for the cost per square meter of a wall only with reference to a specific material that has its own average cost. So, for example, the price of a plaster mixture can be almost twice as different.

Tab. Calculation of the cost and consumption of building materials per 1 m 2 of the wall

The consumption of cement per 1 m2 of screed allows you to understand how to calculate how much cement is needed in order to get a stable base that will work long time. We will also consider how to calculate the flow rate of the CPS, which affects the consumption of the mixture and the formulas and scheme for calculating the CPS. depends entirely on the elements used in its manufacture.

What are ready mixes can be found here

• let the area of ​​the room be 20 m2
• the height of the screed is 5 centimeters

Thus, by calculating cement screed we get:

20 * 0.05 = 1 m3

1 cube of cement must be spent per room.

The consumption of the mixture produced, and hence the solution made from it, is approximately 20 kilograms per 1 square meter with a screed thickness of one centimeter, so the material consumption for this floor screed will be

20 * 0.05 * 20 = 2000 kg

In packages, the weight is usually 50 kg, which means, according to the calculation of the cement screed, 40 bags of the product will be required.

If ready-made mixtures are not used to make the mortar, then the calculation of the cement screed looks like this:

• Let's say the area of ​​the room is 25 squares.
• the screed has a height of 4 centimeters

25 * 0.04 = 1 m3

With a proportion equal to three to one, we get the consumption of cement for the screed equal to 0.33 m3, and the consumption of sand is 0.66 m3. And from here we can calculate the cement consumption per 1 m2 of screed.

When calculating the screed for the floor, you need to take into account the fact that the resulting figure must be increased by at least 25% for the reason that small particles mortar during laying will fill all the smallest pores and cracks.

There is a concept as the minimum thickness of the screed, which should be taken into account.

Nuances in calculating the cps

When implementing a floor screed for installing a warm floor, certain points must be taken into account. When calculating cement and other materials for preparing the mixture, it must be taken into account that the layer height above the pipes must be at least five centimeters. If the layer is more than 150 millimeters, then it will take a lot of energy to heat the floor and thus the efficiency of the warm floor is sharply reduced. Therefore, in order to reduce the consumption of the screed and maintain the energy efficiency of the warm floor, granite chips are added to the mixture.

When carrying out floor repairs in an apartment, when a new screed is opened and redone or laid, in fact it is considered a change in the configuration of the floor, and based on provision 2.2.6 of Decree No. official permission and draw up and agree on the project.

In addition, if a new screed is installed on top of the old one, then the pressure on the floors increases significantly, which is highly undesirable. Therefore, the consumption of cement per 1 m2 of screed must be done in such a way as not to increase the load on the floors.

In this article, we examined the main points of calculating the cps, cement consumption per 1 m2 of screed and the nuances that should be taken into account. If you follow all the recommendations received, you can easily make the correct calculation. the right materials and you can also do it yourself.

Count your expenses. All rates and costs below:

1. How many cubes are in a bag of dry cement or building mix:

in 50kg - 0.038 m3

in 40kg - 0.03 m3

in 25kg - 0.019 m3

2. Cement-sand mortar for masonry:

For 1 m2 of brickwork with a masonry thickness of 1, the amount of mortar approaches 75 liters from the consumption per 1 m2. If the laying of a brick wall is 1.5 bricks thick, then the amount of mortar will correspond to a figure of 115 liters.

3. Proportions of cement mortar:

In order to prepare a building material, you need: 1 part of a binder (cement) and 4 parts of aggregate.

4. The proportions of the plaster mixture:

You will need 1 part of the binder (cement) and 3 parts of the aggregate.

5. cement mortar for brick:

According to consumption rates 400 pcs. bricks (more precisely 404) - 1 m3 of masonry. The consumption rate of the solution per 1 m3 is 0.23 m3 (in practice, 0.25 is accepted).

26. How many bricks are needed per 1m2 of masonry:

a) If the wall thickness is half a brick - 120 mm

1. single brick - 61 pcs. excluding seam, 51 pcs. with a seam
2. one and a half bricks - 46 pcs. excluding seam, 39 pcs. with a seam
3. double brick - 30 pcs. excluding seam, 26 pcs. with a seam

b) If the wall thickness is one brick - 250 mm

1. single brick - 128 pcs. excluding seam, 102 pcs. with a seam
2. one and a half bricks - 95 pcs. excluding seam, 78 pcs. with a seam
3. double brick - 60 pcs. excluding seam, 52 pcs. with a seam

c) If the wall thickness is one and a half bricks - 380 mm

1. single brick - 189 pcs. excluding seam, 153 pcs. with a seam
2. one and a half bricks - 140 pcs. excluding seam, 117 pcs. with a seam
3. double brick - 90 pcs. excluding seam, 78 pcs. with a seam

d) If the wall thickness is two bricks - 510 mm

On a construction site of any level, from a skyscraper to country house, can not do without concrete. This material is used for pouring foundations, building walls in monolithic construction, devices of ceilings and screeds, in laying bricks and other artificial stone. Concrete preparation in correct proportion not only ensures the durability and strength of structures, but also avoids unnecessary costs for materials.

Composition of concrete

In the simplest case, concrete consists of three components:

• Binder.
• Aggregate.
• Water.

The consumption of materials per 1 m3 of concrete is determined by the properties of these materials. As for the production of the mixture, cements of grades M100-M600 are used in terms of strength. When mixed with water, a viscous mass is formed, upon solidification of which fake diamond. As a filler, sand or various are used. This increases strength. frozen solution, since the strength of crushed stone is higher than the strength of cement. In addition, the use of aggregate reduces the shrinkage of the cement mix.

In addition to the main components, the composition of concrete includes various additives that give the solution additional properties: frost resistance, water resistance, color, etc.

The required consumption of materials per 1 m3 of concrete - crushed stone, cement, sand - is determined based on the requirements for the characteristics of the mixture.

Main characteristics of concrete

The most important characteristic of concrete is its compressive strength. Depending on it, a strength class is set. Denoted English letter"B" and numbers corresponding to the strength of the sample in MPa. Concretes of classes from B3.5 to B80 are produced, in civil engineering solutions B15 - B30 are most applicable. In addition to classes, a brand can be used to indicate strength. It is designated by the Latin letter "M" and a number corresponding to the strength in kg / cm2. Classes and brands correlate quite accurately with each other, for example, M200 solution corresponds to class B15, and M300 to class B22.5.

The consumption of materials per 1 m3 of concrete can vary significantly depending on the required class or brand of mortar.

It should be noted that the actual class of concrete is determined only in laboratory conditions on day 28. Therefore, if it is necessary to know exactly the brand of the mixture, then at the stage of its preparation, several samples should be cast - cubes or cylinders 100 mm high. It is also possible to determine the strength of concrete using the instrumental method or the Kashkarov hammer, but these methods are less accurate.

Selecting the required concrete class

The required grade of concrete must be specified in project documentation to the construction site. If the construction is carried out independently, you should decide on the brand of the mixture, as this will decisively affect the strength and cost of the building or structure being built.

The purpose of concrete of the most common grades is given below.

• M100 - used for the installation of footings, the installation of parebriki, small architectural forms;
• M150 - used for arranging paths, sealing fence supports;
• M200 - for the construction of walls, porches;
• M250 - production of monolithic foundations, grillages, foundation slabs, lightly loaded floor slabs, stairs, retaining walls;
• M300 - for any loaded structures: walls, ceilings, foundations;
• M350 - bearing walls, columns, ceilings, beams, monolithic foundations.

Sand parameters

Sand is used to prepare the solution various origins: quarry or river. The second is more preferable, as it has a larger granule size and does not contain impurities. Quarry sand can vary in its granulometric composition. It is preferable to use sand with medium and large granules. Since quarry sand may contain clay or other impurities, it is recommended to sift it.

It is extremely important to pay attention to the moisture content of the sand. Depending on this, the amount of water added to the mixture should be adjusted. Taking into account the humidity and density of bulk sand, it can vary from 1.3 to 1.9 t / m3, this must be taken into account when calculating the consumption of materials per 1 m3 of concrete.

Choice of gravel

Crushed stone in the composition concrete mix increases the strength of concrete and reduces its shrinkage during curing. When choosing gravel highest value have his faction and origin.

In construction, crushed stone fractions are used:

• from 5 to 20 mm;
• from 20 to 40 mm;
• from 40 to 70 mm.

Depending on the raw material, crushed stone is classified into:

• Limestone, based on sedimentary rocks.
• Gravel from rounded rock fragments.
• Granite, obtained by crushing granite and granite-gneiss rocks.

Granite crushed stone has the best strength parameters, so if concrete is being prepared for critical structures - foundations, columns, ceilings, then it is better to use it. We must not forget that the crushed stone used should not contain impurities, especially clay.

Water cement ratio

In the production of concrete, the ratio of cement and water is of paramount importance. Water is needed for chemical reaction hydration of cement, leading to the formation of cement stone. This ratio decisively determines the class of the concrete mix. It is important to take into account the brand of cement. The lower the water-cement ratio, the stronger the concrete. The minimum ratio required for cement hydration is 0.2. In practice, concretes with a ratio of water to cement of 0.3-0.5 are used. Mixtures with a high water-cement ratio are practically not used.

Determining the proportions of the concrete mix

As a rule, cements and M500 are used for the preparation of concrete. In practice, the following table is used to determine the consumption of cement per 1 m3 of concrete.

These data are given for conditions with normal temperature and air humidity, as well as for cement, the parameters of which correspond to those indicated on the package. AT real life an excess of cement of 10-15% should be provided.

For example, the consumption of materials per 1 m3 of M200 concrete will be: cement grade M500 - 240 kg, sand - 576 kg, crushed stone - 984 kg, water - 120 l.

Concrete making

At large volumes concrete work it is advisable to buy ready-made concrete at the nearest factory with delivery by a mixer. In conditions industrial production materials per 1 m3 of concrete are kept quite strictly. If this is not possible, you can prepare the required amount of the mixture at home. It is important to correctly assess your capabilities - the concreting of a separate structure must be carried out in one go.

Before mixing the mixture, the consumption of materials per 1 m3 of concrete is determined. It is not necessary to calculate the consumption rate of the components; it is enough to use the table below.

The mixture is prepared in a concrete mixer of the appropriate volume, putting measured portions of dry cement, sifted sand and gravel into it. Water is recommended to be added in portions last.

Additives

In addition to the main components, additives for various purposes are added to the concrete composition:

• Modifiers. Designed to increase the strength and increase the frost resistance of concrete.
• plasticizers. Increase the mobility and water resistance of the mixture.
• Mobility regulators. They allow to extend the setting time, maintain mobility during transportation.
• Antifreeze additives. Provides normal setting of the solution at negative temperatures down to minus 20 degrees.
• Setting accelerators. Increase setting speed providing maximum speed dial strength on the first day.

When using additives, the consumption of materials per 1 m3 of concrete should be determined taking into account the manufacturer's recommendations. Violation of the instructions for use can have quite the opposite effect.