Rating of imported water repellents for paving slabs. Wet stone: water repellent for paving slabs. Consumption of ready-to-use solution

TU 2229-002-73350653-2007

The hydrophobizing composition "NEOGARD for paving slabs" is designed to impart water-repellent properties to paving slabs, concrete products, and plastered surfaces.

Composition and properties

Composition based on water-based polyorganosiloxanes (water-repellent liquid "Neogard-1" - 98%, functional additives - 2%).

The treated surfaces acquire water-repellent properties, become resistant to precipitation, groundwater and other aggressive influences, incl. acid.
Increases the thermal insulation properties of materials. Has antiseptic properties. Prevents the formation of fungi, mold, etc. Prevents dust and dirt formation. Maintains vapor permeability. The treated surface "breathes". The composition is odorless and colorless, does not change the texture and color of the treated surfaces (does not form a film). Absolutely fire and explosion proof. Environmentally friendly. Does not require preliminary preparation: ready for use.

Frost-resistant. Works can be carried out at a temperature of minus 10°C.

The treated surface retains the effect of water repellency when used outdoors for at least 5 years, with deep impregnation throughout the entire service life.

* For processing wet surfaces, as well as for materials with high density, we suggest using an improved composition

Storage conditions

Shelf life in a closed container is not limited. The composition does not freeze up to -10°C. After defrosting does not lose its properties. Do not store in glass or metal containers.

Directions for use

The composition is applied with a brush, roller or sprayer in 1-2 layers with an interval of 5-10 minutes until saturation without the formation of puddles or immersion in the composition (deep impregnation). The surface to be treated must be clean, preferably dry (humidity not more than 70%). Surface defects deeper than 5 mm are repaired. The required hydrophobicity occurs after 24 hours. Not intended for use on synthetic materials. Further finishing of the treated surface requires non-aqueous materials.

Long-term storage may result in the formation of a soluble precipitate. Stir (shake) before use.

The consumption of the composition is 0.2-0.3 l/m 2 depending on the porosity of the surface.

HYDROPHOBIZERSBIONIC EFFECT. QUESTIONS - ANSWERS

1. What is the protective function of BIONIC EFFECT water repellents?

The basis of the impregnations is a fluorocarbon polymer with all its inherent properties. These water repellents are preparations with complex protection of the treated surface. The complex of protective properties includes: protection from moisture, from water and oil pollution, from acids, salts, alkalis, UV radiation. To date, this is the only drug that provides such a complex of protective properties, while maintaining vapor permeability and surface structure.

2. What are the advantages over other impregnations?

Benefits of drugsBIONIC EFFECT:

  • All water repellents are water-based and safe for humans and the environment.
  • Simple application of preparations in any available way (brush, roller, sprayers)
  • They do not form films, unlike acrylic or organosilicon (silanes, silicones, polysiloxanes) water repellents
  • Self-healing and self-regulating system (a slightly damp surface, which can form, for example, during precipitation for a very long time, after drying, has the whole complex of initial properties as a result of self-healing and self-regulation of the structure of the water repellent)
  • Can be applied to horizontal surfaces with high abrasion resistance

3. How do water repellents work? Operating principle.

Penetrating through the pores of the surface of the processed material (natural and artificial stone, brick, concrete, wood), water repellents envelop them from the inside at the entire depth of penetration, without clogging and leaving the surface breathable. The penetration depth depends on the density and porosity of the material. For example, paving slabs from different manufacturers vary greatly in density and porosity due to different manufacturing methods (molded, vibro-casting, pressed, hyper-pressed) and the cement used and various additives. This also applies to decorative artificial stone.

4. How to properly apply on the treated surface? Application method.

All brands of water repellentsBIONIC EFFECTapplied to a clean and DRY surface. Preferably in 2 coats on a “wet-on-wet” basis to enhance and maintain the treatment effect.

Application according to the “wet-on-wet” principle means: application of the 1st layer on a dry and clean surface; after absorbing moisture and slightly drying, the 2nd layer is applied. Before applying the second layer, you should not give time for the applied water repellent to dry, because after the 1st layer has completely dried, it will simply not be possible to apply the second layer, since the surface will acquire water-repellent properties! And it will not let the water repellent inside the substrate.

When applying BIONIK MBO2 and BIONIK MBO6 on horizontal surfaces, do not leave puddles to obtain a uniform effect! Gently “disperse” the remaining puddles with a brush or roller or blot with a rag.

5. Can it be applied on horizontal surfaces? Operation under load (floors, paving slabs…) - resistance to abrasion?

All water repellents work on horizontal surfacesBIONIC EFFECT. When using water repellents with the effect of "wet stone", follow the application technology and do not leave puddles. The treatment effect is resistant to abrasion at the entire depth of penetration of the drug deep into the substrate. For paving slabs, paving stones, a special preparation BIONIK MBO6 has been developed, which is a microemulsion and easily penetrates even into dense surface structures. But it can also be used to obtain the effect of "wet stone" and BIONIK MBO2. It all depends on the density and porosity of the surface.

6. On what surface can water repellents be applied?

Water repellentsBIONIC EFFECTcan be applied to any absorbent surface.

7. Influence of temperature on the treatment effect (ovens, fireplaces).

Elevated temperatures after surface treatment with water repellents only increase the hydrophobic effect and protective functions.

8. The formation of spots, stripes, the so-called "efflorescence" on the treated surface. Common drug application errors.

The main mistake when applying preparations is a dirty or wet surface! Under the conditions of application, the formation of any irregularities, spots, stripes is excluded. In addition, the full fixation time is 24 hours! If the treated surface is used before 24 hours has elapsed, or if the surface is exposed to moisture, any chemicals during fixing, it may cause uneven application, spots, streaks, etc. You must follow the instructions!!!

9. Operation of the treated surface at low temperatures in winter.

Low temperatures do not adversely affect the treated surface. The acquired protective properties of the treated surface are preserved in the winter.

10. Differences between water repellents BIONIK MVO, BIONIK MVO2, BIONIK MVO6.

It is enough to simply apply it to the surface, and the tile will be protected from rain, snow and frost. In winter, there will be no ice on it - the path will become absolutely safe. In summer, the color shades will look brighter, and the coating itself will dry out after the rain at the first rays of the sun.

The negative impact of water on concrete paving slabs

Atmospheric moisture, falling on the surface of the paved surface, can cause serious damage to it. Rain and melt waters are never sterile, especially in urban areas.

They are saturated with car exhaust gases, industrial emissions, weak acidic and alkaline solutions. Such waters may contain light hydrocarbons and various microorganisms. All this, penetrating into the pores of the paving material, contributes to its contamination, the appearance of stains and a change in color shades. Besides:

  • a wet surface is a good environment for the emergence and further growth of various fungal growths and molds;
  • penetrating inside the concrete, water washes out the salts present in its composition, which protrude to the surface in the form of ugly white efflorescence;
  • wet paving slabs have a sharp decrease in frost resistance, which can lead to its destruction after a few seasons.

Therefore, the issue of protecting the pavement from the negative effects of moisture is very relevant and should be addressed immediately after the masonry is completed. This will save you time and money in the future.

High-quality water-repellent impregnation

The problem of colored pavers made of concrete is the possible penetration of moisture between the tile joints and into the tile itself through the pores in the material. And if the water that has entered through the seams leaves through the base into the ground, then the moisture in the pores can freeze and destroy the material.

This is especially true for paving stones made according to, which is characterized by increased porosity.

To protect the pavers from the negative effects of moisture, it must be treated with a special water-repellent impregnation - a water repellent. Such a solution penetrates deep into the tile through the existing pores, and creates a strong water-repellent film on the surface.

As a result, moisture does not penetrate inside, the destructive effect disappears when freezing. After processing, the tile acquires a fresh and brighter color. In addition, a water repellent agent for concrete paving slabs prevents white spots (efflorescence), moss and mold from appearing on the surface, even in the most shaded places.

Hydrophobization should not be confused with waterproofing. With the first type of treatment, the surface of the material acquires a water-repellent effect, while maintaining the ability to pass air and release the resulting vapors to the surface.

Waterproofing is completely impermeable. Therefore, water repellents work effectively only under conditions of short-term and periodic exposure to moisture. Under a constant layer of water, the protective effect disappears.

Technology for the use of water repellents

Before applying a water repellent to a cobbled paving surface, it is necessary to inspect it. Check the presence of slopes, the absence of subsidence, in which puddles can form, the condition of drainage and drainage flows. Before starting large-scale processing, a test coating in an inconspicuous place should be carried out.

  1. the entire surface to be treated must be thoroughly cleaned of debris, dirt, oil and other stains;
  2. existing cracks must be repaired, and damaged tiles must be replaced with new ones;
  3. water repellent for paving slabs is best applied on a dry surface, since when wet tiles are covered, the quality of processing is sharply reduced;
  4. wet surfaces can only be treated with alcohol-based impregnations;
  5. you can apply liquid to the surface of paving slabs with a roller, brush or spray;
  6. tiles with chips or deep scratches should be processed 2-3 times;
  7. the second layer of the water repellent is applied until the first layer is completely dry, but only after it has been absorbed;
  8. excess applied substance remaining on the surface should be removed with a cloth or foam sponge;
  9. material consumption for processing tiles depends on its porosity and humidity;
  10. work should be carried out at an outdoor air temperature of at least +5 ° C, in the absence of precipitation and strong wind capable of carrying the sprayed material to the side;
  11. complete formation of a hydrophobic film occurs after 24 hours.

The process of applying a water repellent.

At the enterprises for the manufacture of tiles, the technology of volumetric hydrophobization is used. The protective solution is added directly to the concrete mixture during the manufacture of the material. Such protection is more effective, but tiles made in this way are more expensive.

Produced types of water repellents

Manufacturers today offer polymer mixtures, water and alcohol solutions for impregnating paving slabs on the building materials market. Polymer water repellents provide deep surface penetration into concrete and are able to pass air and water vapor.

However, they are more expensive than aqueous solutions and work with them can only be done in dry weather at an air temperature not higher than +22°C. Polymer mixtures dry out very quickly when processing tiles, do not change color, protect paving stones well and have a service life of at least 10 years.

Aqueous solutions are created by mixing water and silicone fats. A special technology has been developed to dissolve silicone. Fats, penetrating into the pores of concrete, reliably block them, preventing the penetration of water.


Hydrophobiser Neogard.

At a low cost, this protective material has a short service life, which does not exceed 5 years. This means that the treatment must be repeated every 3-4 years. Alcohol solutions are similar to water solutions, but they are designed as universal ones, since the technology of their application to paving stones does not depend on its moisture content.

Finally

Paving slabs treated with a water repellent are reliably protected from the harmful effects of precipitation and melt water for a long time. In the cold season, cracks and ice will not appear on it. The coating will retain its original color without the effect of the appearance of a greasy film.

Paving stone coated with a protective compound will be less polluted, as it acquires the ability to self-clean. However, one should not forget about the need for periodic re-treatments, since the protective material has a finite service life.

The use of hydrophobic protective compounds is a modern, effective and affordable technology for many.

The finishing touch in the arrangement of suburban areas and areas around new buildings is the laying of paving slabs. It is very important not only to lay it correctly, but also to protect it reliably! A water repellent can easily cope with this task. The paths will not only not collapse, but will look aesthetically pleasing, moss and efflorescence will not form on them. And one of the main advantages of treatment with a water repellent is that you will forget about the constant need to knock down frost, sprinkle salt on the tile and other non-environmental reagents. Just brush off the frozen drops with a shovel or even a broom.

Applying a water repellent to paving slabs.

It is important that by treating the tile with a water repellent immediately after laying, you will save your time and money in the future. It is not uncommon for tiles to be partially destroyed the very next season after laying due to the penetration of water into it, followed by freezing and thawing. You can forget about the beauty of such a coating. And after a couple of years, you will have to change it altogether. Water simply does not penetrate into the treated tile, which means that it will delight everyone for many more years.

Reference

In order to protect the surface from stain-forming liquids and other contaminants, special compounds are used - water repellents, which provide:

  • prolonged dirt and stain protection effect in cases of oil and water pollution; facilitating the removal of dirt and stains;
  • improved appearance of the surface with a discreet glossy effect;
  • improved color vibrancy (slight wet surface effect);
  • reducing the tendency to fading, pollution;
  • simplification of ice removal.

What is hydrophobization?

Hydrophobization is a decrease in the ability of materials and products to be wetted (impregnated) with water and aqueous solutions. In contrast to the case of waterproofing, treated materials retain gas and vapor permeability, i.e. the surface "breathes". Hydrophobization is effective under conditions of periodic exposure to water (atmospheric precipitation, dew, etc.) and is not used in the case of constant (more than a week) presence of the material under a layer of water.

Why is water considered the "enemy" of building materials? Firstly, the water that has fallen on the surface of the building material in most cases is not clean. Most often, interacting with industrial emissions and exhaust gases, it turns into acid solutions, which, penetrating into the pores of concrete, cause its destruction, which varies in intensity depending on the acidity of the solutions mentioned above. Secondly, even pure water, penetrating into the material, significantly changes such a parameter as thermal insulation properties. Thirdly, water dissolves the salts that are part of the materials, which then form unattractive spots (efflorescence) on the surface of the product. Fourthly, a wet surface is a good environment for the growth of fungi and mold, which contribute both to the process of material destruction and to the ecology of the environment. And, probably, a particular danger is the freezing of water that has penetrated into the pores of the material. The resulting ice has a larger volume than the original water, and as a result, significant mechanical stresses arise in the material. As a result, when a certain number of freeze/thaw cycles are repeated, the non-hydrophobized material loses its strength with subsequent destruction.


How to use a water repellent for paving

  1. Conduct a paving inspection. Check compliance with the laying technology (slope, drainage drains). When using cleaners and water repellents, the instructions of the formulation manufacturers should be followed. Before starting the treatment of the entire coating, a trial treatment should be carried out on a small area;
  2. The surface to be treated must be free of dust, dirt and debris. Oil stains and streaks, paint residues are not allowed. Cracks (with the exception of hairline cracks) must be repaired. The surface of a newly formed product, as a rule, does not require additional processing;
  3. It is desirable to treat a dry surface; in case of emergency, processing of a wet surface is possible, however, this reduces the depth of penetration of the composition into the processed material and, as a result, the service life of the finished coating decreases. To treat a wet surface, water repellents of the NEOGARD - extra strong coating series on an alcohol basis can be used;
  4. Water-repellent compositions are applied with a brush, roller or spray quite plentifully, but without the formation of streaks. Particular attention should be paid to the treatment of surface defects (chips, deep scratches). When applying the composition in two layers, the second is applied after absorption, but before the first one dries (usually after 5-15 minutes). When processing paving made of natural and artificial stone, special attention should be paid to the absorption of the water repellent into the material. With a low absorbency of the coating, excess water-repellent composition should be removed before it dries with a soft cloth or sponge;
  5. Work on the treatment with water repellents is usually carried out at an air temperature above + 5 ° C. In the case of using the hydrophobic composition "NEOGARD for tiles", work on its application can be carried out at an ambient temperature above -10°C (14°F) in the absence of direct exposure to atmospheric precipitation on the surface to be treated;
  6. The necessary hydrophobicity of the treated surface occurs after its complete drying, as a rule, after 24 hours. During this period, it is desirable to protect the treated surface from direct exposure to atmospheric precipitation.

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Since the advent of cement as the main binder for building concrete, there has been a problem of increasing the water-repellent properties (hydrophobicity) of products made from it.

Air-entraining

They are used to increase the plasticity of the concrete mixture and reduce the amount of water during its preparation. Therefore, products with the use of such additives should be more resistant to temperature changes in winter. But the strength of the product is reduced, according to calculations, by 20%.

Wetting and dispersing

They have a positive effect on the plasticity of the concrete mass, but the strength characteristics of the finished product are reduced.

Hydrophobic

A large number of such additives are currently being produced. They are based on insoluble soap, vegetable or mineral oils, which form a waterproof film on the surface of the finished product and, in calm conditions, increase its water-repellent properties.

These additives do not protect against the penetration of moisture under pressure, but lose their qualities in a short time. Such substances, applied on the outside, just provide the desired properties.

Before introducing hydrophobic additives in the manufacture of paving slabs, it is necessary to make sure that other qualities of the product will not be violated.

Advantages of Surface Treatment of FEM with Hydrophobic Compounds

So, with moisture, as the main "enemy" of durability, it is most effective to fight by external impregnation of the surface. For this, special hydrophobic compounds are used, manufactured industrially based on polyethylsiloxane substances.

The use of compounds can be twofold:

  • impregnation of finished products by the manufacturer at the aging stage;
  • surface treatment of the equipped tiling.

The result of the action of water-repellent compositions is as follows: they form a film on the surface, and atmospheric moisture, falling on it, is divided into small drops enclosed in a kind of fatty shell, due to which they either “roll off” from the surface or evaporate. Especially such impregnations are important for, because. fill any micropores.

Advantages of hydrophobic (water-repellent) compounds:

  1. Easily applied to the paving surface with a brush, roller. In the case of coating at the exposure stage - with a spray gun.
  2. The resulting organic film prevents moisture from entering the concrete structure and protects it from destruction, increases frost resistance and resistance of the top layer to abrasion.
  3. They are able to fill small cracks and prevent further damage.
  4. Prevent the appearance of whitish efflorescence, have antiseptic properties.
  5. Substances do not violate the anti-slip properties of the tiling elements.
  6. Protect the surface from oily contamination in the areas of gas stations.
  7. After drying, they are not visible, and PEM acquire brightness and expressiveness.
  8. Due to the organic basis, they are non-toxic and do not contain fumes harmful to human health.

Substances are applied to paving slabs (FEM) in the following order:

  • the treatment area is cleaned of contaminants with a brush or washing under pressure;
  • if there are fungal or mossy lesions, antiseptic treatment is carried out;
  • the tiling dries well;
  • application of a hydrophobic agent is possible with a brush, roller or spray;
  • the second layer is applied after the first has completely dried (after 2-3 hours at a temperature of 20°C).

The most common impregnations

In the trading network, water-repellent compositions are quite widely represented. Most of them are made on the basis of siloxane. Their action is identical: the substance penetrates into the depth of the tile, filling small cracks and creating an organic film on the surface. As a result, an obstacle is formed to the ingress of moisture and the destruction of concrete is prevented.

The most common impregnations:

  1. Ceresit CT10 is a silicone-based liquid. Protects concrete products from the appearance of efflorescence, damage by moss and fungus, forms an organic film, fills small pores and cracks. Applied in 1 layer.
  2. Impregnat Dry is a liquid for impregnating the top layer of paving slabs (FEM), pavers. The substance is capable of penetrating up to 5 mm. Organic compounds increase FEM frost resistance, abrasion resistance, and decorative effect. Applied in 2 layers.
  3. VOKA is a versatile substance with pronounced water-repellent properties. It penetrates deep into 2-3 mm, is applied in 1 layer, it fully shows its effect after 24 hours. The advantage is the long-term preservation of hydrophobic properties (up to 10 years). The disadvantage is the high price.

Thus, imparting water-repellent properties to concrete products is necessary to increase their strength, frost resistance, and hence durability.

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