Overview of adhesive mixtures for laying aerated concrete blocks. Glue for aerated concrete blocks Which glue for gas silicate blocks is better

Designed specifically for the installation of walls from gas silicate building blocks.

Features of adhesives for gas silicate blocks

Adhesives for gas silicate blocks are a kind of adhesives for foam blocks, which are produced on the basis of cement, sand, modifiers and plasticizers to give certain characteristics. The main feature of the adhesive is its thin-layer application, which makes it possible to minimize the "cold bridges" in the masonry without loss of adhesion strength.

To reduce glue consumption as much as possible, use high-quality building blocks with a flat surface without cracks and potholes. Manufacturers recommend applying adhesive with a layer of 1-5 mm and strictly following the instructions for preparing the solution. This will ensure the absence of gaps in the adhesive layer, frost resistance and thermal insulation properties of the masonry.

If you started construction in the cold season, use winter modifications of adhesives for gas silicate blocks with antifreeze additives.

It is not recommended to use tile adhesive and conventional masonry mixtures for laying cellular blocks, which have completely different properties.

The high moisture resistance of the adhesive composition provides protection against moisture penetration and prevents the development of mold and fungi.

Buy glue for gas silicate blocks in Moscow

If you are a fan of energy-saving construction technologies and have chosen warm gas silicate blocks, then for the best result you need to use special adhesives for gas silicate blocks. This will minimize the future heat loss of the house and the cost of heating it. AT Moscow to buy glue for gas silicate blocks you can in our online store with delivery or pickup from the warehouse. We offer prices from the manufacturer, and for wholesale customers - favorable conditions.

Large-block construction of houses is beneficial in all respects: it is carried out faster than traditional brickwork, in addition, glue for gas silicate blocks is consumed much less than cement-sand mortar. A new type has appeared on sale - glue foam in cylinders: one tube is equivalent to 25 kg of dry mix, but the product has not been tested by time.

You need to choose a material according to its characteristics. Adhesive mixtures will cost more than cement ones, but in the end their cost turns out to be less than the cost of making masonry mortar, delivering sand and cement to the construction site.

Gluing blocks requires the professionalism of masons and the precise geometry of cellular bricks.

Features and benefits of glue for gas silicate blocks

Masonry adhesive composition EK 7000 GSB

Special adhesive mixtures, in addition to Portland cement, contain a number of other components. Quartz sand provides a small thickness of the binder layer. Mineral additives retain water and prevent cracking. Polymer plasticizers reduce heat loss through mortar joints, increase the adhesion force between blocks.

Advantages of adhesive mixtures:

• Thin seams (2 - 5 mm) - and the cement-sand mixture requires a layer of at least 15 mm thick, otherwise the masonry will lose strength due to the hygroscopicity of the blocks.
• Profitability - to lay aerated concrete blocks, glue will be required 6 times less than a conventional solution, and the price is only twice as high.
• Plastic.
• Fire safety and fire resistance.
• Resistant to moisture and low temperatures.
• The absence of cold bridges in the masonry.
• Connection strength.
• Freezing speed.
• Simplicity of production of a ready mix from a semi-finished product.

How to choose an adhesive

In order not to have to check the quality of the purchase during direct installation, be sure to use the following recommendations:

• When choosing a manufacturer, it is better to prefer a company with well-established technology.
• A low price is a sign of a fake or low-quality product.
• Use the product within the time period indicated on the package.
• Excessive humidity or low temperature in the room for storing mixtures leads to a deterioration in the physical and mechanical properties of the resulting solutions, a decrease in the strength of the masonry.
• You should adhere to the technology for preparing the solution, the conditions of use, drying - if you have to work in winter at temperatures below +5, you will need to add special components that increase the frost resistance of the composition.

When choosing, specify the amount of glue. According to the norm, consumption per 1 M2 is 1.5-1.6 kg of adhesive powder. Knowing the consumption of glue for gas silicate blocks per 1 m3, it is easy to calculate the dry mix required for the construction of the box. To dilute 25 kg, 6 - 6.5 liters of water are required, that is, the weight of the finished adhesive from 1 package is 31 - 31.5 kg. You can calculate the amount for masonry using a calculator.

To glue a cubic meter of masonry, you will need 15 - 40 kg of mortar - consumption depends on the thickness of the layer. For comparison: 3000 kg of cement is used per 100 cubic meters of gas silicate. The layer of the applied composition is several times thicker, which means more consumption.

What is the consumption of glue for gas silicate blocks

To understand how much solution is needed, consider the table. The information given is based on the minimum joint thickness.

How to optimize the consumption of glue for gas silicate blocks, technological methods

Before you start gluing the blocks, you should perform preparatory work and operations so as not to waste excess glue, and at the same time create a solid and reliable wall.

• Basic masonry techniques. The adhesive mass is applied to the vertical or horizontal plane of the first laid block with a 6x6 cm comb spatula. The prepared gas silicate blocks should be laid on the glue, slightly pressing against the base, followed by upsetting with a rubber tool (hammer). Thus, a thickness of no more than 5 mm is achieved. The reinforcing mesh is covered with a layer of glue 2-5 mm, and metal rods (diameter 8 mm) are poured. The optimum drying temperature is +5 - +25 o C.
  

  Glue consumption depends on weather conditions. If work is carried out in winter, a frost-resistant composition is used.

  If you follow the requirements of the instructions and properly prepare the mixture, then for gas silicate blocks the consumption of glue will be economical, and the mounted walls will be monolithic.

A variety of building materials often forces private developers to deal with their difficult choice. This applies not only to the main structural elements, but also to auxiliary mixtures and compounds involved in the construction of buildings. In particular, when laying gas silicate blocks, it is allowed to use a traditional cement-sand mortar or a special adhesive that has a sufficient number of advantages, in addition to a higher, at first glance, price. It would seem, where is the benefit of using modern material hidden, if you have to pay more when buying it than for cement and sand combined? But in the end, the actual consumption of glue for gas silicate will be 5-6 times less compared to a conventional solution.

The popularity of gas silicate blocks

The effectiveness of the use of cellular concrete blocks for laying external walls, which include gas silicate products, lies in their structure. During the manufacturing process of the material, numerous isolated voids filled with air are formed in it, which contributes to obtaining lower thermal conductivity compared to ceramic or silicate bricks.

The size of the gas silicate block significantly exceeds the dimensions of a typical brick. With standard values, their difference is 18 units, which speeds up the construction of gas silicate boxes. An important role is played by the weight of the bearing walls, which affects the bulkiness and depth of the foundation. The mass of the wall block varies depending on the density of the gas silicate, but in any case it will be 2-2.5 times less than that of 18 bricks.

So, the popularity of gas silicate masonry is largely made up of visible savings, including those consisting in reducing the cost of heating and building a foundation. The walls do not need additional heat and sound insulation, moreover, they have refractory properties. And the clear geometric shapes of a single block product make it possible to perform fairly thin masonry joints.

It should be noted that the difference in the cost of one cube of ordinary gas silicate blocks and traditional bricks is not in favor of the latter.

Of course, gas silicate walls have their drawbacks. And the main one is the need for external wall cladding or surface plastering, since the porous material is afraid of moisture. But for the sake of justice, it is worth noting that often houses made of clay bricks are also lined with facing stone. By the way, they do this not only to improve aesthetic qualities, but also as protection against destruction under the influence of atmospheric phenomena.

Another disadvantage of gas silicate blocks is their fragility, therefore, for load-bearing walls, a denser structure of the material should be used, which has less, but still sufficient, heat-insulating properties. As for everyday situations, it should be noted that the fragility of gas silicate simply will not allow you to attach a heavy object to the wall. This fact must be taken into account.

Glue features

Consumers have many questions before buying glue for gas silicate blocks - what volume to choose, how not to make a mistake with the type of dry mix, how to understand manufacturers and brands, how to dilute and apply the composition correctly. But first, you should get to know the material better and understand why it is he who is preferred when laying gas silicate blocks.

As mentioned above, gas silicate products have a porous structure, therefore they actively absorb moisture, which is, among other things, in a cement-sand mortar. So that the masonry does not lose the necessary strength due to its premature drying, the thickness of the seams must be made too wide - up to 1.5-2 cm. This leads to overspending of the mortar and deterioration of the thermal insulation qualities of the building envelope due to the high thermal conductivity of the cement-sand layer located between the blocks. Glue, unlike mortar, is able to securely fasten the stones together with a seam thickness of up to 2-5 mm, which saves the walls from peculiar cold bridges.

The small thickness of the seam between the blocks is possible due to their ideal shape, which allows only minimal deviations.

The adhesive mixture for gas silicate masonry is a dry composition of several ingredients:

• Portland cement;
• fine sand;
• modifying additives responsible for the retention of moisture, the absence of cracks and the plasticity of the adhesive;
• polymers that improve adhesion (adhesion) and contribute to high-quality filling of irregularities.

Glue per cubic meter of laying gas silicate blocks is spent much less than for an identical volume of traditional bricks. And the point here is not only in the thickness of the seams, but also in the surface area on which this or that composition is applied. One should only imagine that where only one block will need to be smeared with glue, the solution will be needed for 18 bricks! The savings are visible to the naked eye, even though the adhesive mixture costs twice as much as the same volume of cement-sand composition.

But the benefits of glue for gas silicate do not end there. In addition to economy and excellent adhesion, we can distinguish:

• connection strength;
• simplicity and speed of kneading;
• freezing speed;
• water and frost resistance;
• universality - work with any cellular concrete;
• availability and wide choice;
• the possibility of independent use without the involvement of professional masons.

The adhesive mixture for gas silicate blocks is produced for work in summer and winter conditions, for internal and external wall surfaces. Winter compositions are allowed to be used at temperatures up to -10 and not higher than +5 degrees. This mode is associated with the addition of antifreeze additives to the dry mixture, which prevent the normal setting of the adhesive at elevated or low temperatures. Summer adhesive mixtures are recommended to be used in the mode from +5 to +25 degrees. Permissible limits are indicated in the manufacturer's instructions on the packaging.

Dry glue is supplied in packs of 25kg. They must indicate the expiration date.

Calculation of the amount of the mixture

The economical use of the adhesive mixture when laying aerated concrete blocks is fundamental, otherwise, due to the high cost of the material, the point of acquiring it disappears. The joints should be made as thin as possible, which is facilitated by the geometry of the masonry stones and the use of notched trowels that regulate the size of the applied layer.

Depending on the thickness of the seams (2-5 mm), manufacturers set the approximate consumption of dry glue per cubic meter in the range of 15 ... 25 kg, which corresponds to the volume of one bag. The packaging indicates the approximate consumption of the material, so before buying, you should carefully read the manufacturer's instructions.

Preparation of the adhesive composition

It is necessary to dilute dry glue in full accordance with the instructions. It is located on the back of the package.

For cooking, you need a clean deep container, preferably a bucket. First, water is poured into it, and only then the mixture is poured. To obtain a homogeneous mass, it is important to maintain just such a bookmark order. The solution is kneaded using a special nozzle installed in a drill instead of a drill, or using a construction mixer. Whipping the mass should not be, therefore, power tools should operate at low speeds.

For a short period of time, the liquid adhesive is allowed to settle, after which it is mixed again. The consistency of the finished mixture is checked by applying it to the gas silicate surface with a notched trowel. The mass should pass between the teeth easily, leaving a clear outline of the grooves that do not blur later.

It should be borne in mind that the glue begins to thicken after one and a half to two hours, so the solution should be kneaded in portions. Manufacturers claim an open working time with a solution of 25-30 minutes.

The diluted mixture is placed on the surface of the block using a notched trowel or a special bucket-trowel. The new stone is lightly pressed against the previously laid block, after which the element is knocked out with a rubber hammer until it finally settles. Correcting the position of the gas silicate block is allowed for 10 ... 15 minutes. Grouting is carried out as one row of masonry is installed.

The adhesive hardens almost every day, and it acquires its final strength after 72 hours. A more accurate time should be indicated on the package.

Adhesive selection criteria

The quality of the adhesive composition intended for laying gas silicate blocks largely depends on the manufacturer of the product. When buying, it is recommended to give preference to well-known manufacturers with a good reputation, and not be seduced by a low price, indicating a likely fake, and not be tempted by the shares of one-day companies that choose low-quality ingredients for the mixture. It must be understood that a quality product cannot have a low cost.

Attention should be paid to the storage conditions of the adhesive in the warehouse or at the point of sale, which do not allow high humidity and low temperatures. If the regime is not observed, the adhesive will lose its physical and mechanical properties, which ultimately affects the insufficient strength of the gas silicate masonry. You should not forget about storage conditions in the case of preliminary purchase of building materials, otherwise the adhesive mixture will have to be purchased again.

It is not recommended to opt for bulk materials without packaging, since no one can guarantee what is mixed there and who the manufacturer is. The same applies to containers with a dull, blurry pattern or indistinct inscription, even if it is a trademark. What self-respecting manufacturer would pack their goods in an unpresentable package today?

Popular adhesive mixtures

The construction market is filled with various dry compounds designed for laying gas silicate blocks. Each region may have its own manufacturer, but the products of large companies are found almost everywhere. On domestic shelves there are products:

• AEROSTONE - Dmitrovsky plant of aerated concrete products;
• BONOLIT - Noginsk company "Bonolit - Construction Solutions";
• THERMOCUBE - Kostroma Plant of Building Materials;
• PORITEP - Ryazan plant of cellular concrete;
• ECO - Yaroslavl Building Materials Plant;
• YTONG - Mozhaisk plant for the production of cellular blocks;
• TAIFUN - Grodno company "Typhoon";
• ILMAX 2200 - Belarusian company for the production of dry mixes "Ilmax";
• IVSIL BLOCK - a well-known Russian manufacturer "Ivsil";
• AEROC - St. Petersburg enterprise for the production of cellular concrete "Aeroc SPb".

The glue of the above brands is of high quality and is in demand on the Russian market. But this list does not limit the number of manufacturers, but mentions only a small part of them.

For quick installation of slabs and blocks made of aerated concrete, foam concrete and gas silicate, glue for gas silicate blocks is used. The price of block adhesive depends on the type, brand, base material and application. Glue for gas silicate blocks is made on a cement basis and fine sand with various additives.

• plastic;
• weatherproof;
• moisture resistant;
• economical.
• grasps quickly.

Before applying glue for gas silicate blocks, it is necessary to carefully prepare the base - clean it from dirt and degrease it. The dry building mix is ​​mixed with water until a ready-made mortar is obtained, after which it is applied to the surface with a notched trowel. Such glue forms a thin, strong seam between the blocks, which significantly improves the wear resistance of the structure.

The construction hypermarket "Master Tibot" sells a wide range of not only adhesives for gas silicate blocks, but also glue for aerated concrete blocks. You can buy glue for gas silicate blocks from us at the most affordable price in the city. We carry out delivery of goods in Moscow and the Moscow region. You can check the cost of the selected products in our online store.

The wall material must provide the structure under construction with reliable performance. A guarantee of high-quality masonry from aerated concrete blocks is possible if special adhesive mixtures are used.

Adhesive for laying aerated concrete blocks is a dry concentrate, which includes the following components:

• high-grade Portland cement as a binder;
• sifted fine sand;
• polymer additives to improve ductility, maximum filling of all irregularities and increase adhesive ability;
• modification additives for retaining internal moisture, protecting the seams from cracking when laying aerated concrete.

Similar mixtures are also used for gas blocks and other masonry materials (for example, foam blocks, as described in), which have a high level of water absorption, as well as where it is necessary to level the surface and putty.

Aerated concrete masonry on a cement-sand mortar differs from adhesive masonry in the following advantageous features of the latter:

• minimum layer thickness not exceeding 2–3 mm;
• good plasticity;
• increased adhesion;
• resistance to moisture and frost;
• the ability to harden without shrinkage;
• improved thermal insulation of the building by reducing heat loss through the seams and the absence of "cold bridges";
• beautiful even laying of gas blocks, due to the minimum layer thickness;
• high setting speed;
• budget cost with economical consumption, that is, despite the fact that the glue is twice as expensive, its consumption is 5 times less;
• ease of use and ease of use;
• increased strength of the structure due to the minimum thickness of the seams, which ensure the solidity of the structure;
• low water consumption, since for 25 kg of concentrate the water consumption is 5.5 liters.

Adhesive for aerated concrete blocks also helps to reduce moisture, as it has the ability to draw it into itself. Water-retaining ingredients eliminate the appearance of mold between the gas blocks and increase their positive properties. And special antifreeze additives allow masonry in the winter season.

There are seasonal varieties of the mixture, which differ from each other in color: gray and white, that is, they are divided into winter and summer glue, respectively. The white color scheme is explained by the presence of the same Portland cement in the composition, which makes it attractive to use gas blocks for interior work. Gray is considered winter, but it can be purchased regardless of the season, even in summer. The presence of antifreeze additives allows it to be used when the outside temperature reaches -10 ° C, but not lower.

Using the winter composition, you must adhere to the following rules:

• store bags in a heated room;
• dilute in warm rooms with water having a temperature of more than 20 ° C;
• the temperature of the finished solution, suitable for use, should not be less than 10 ° C;
• in winter conditions, it is important to protect aerated concrete masonry with tarpaulins so that freezing moisture does not worsen the glue;
• use the finished mixture within half an hour;
• during the winter construction of walls, it is especially necessary to control the consumption for the completeness of the filling and the thickness of the joints;
• put dry blocks.

For uniform hardening of the adhesive, a properly prepared composition, and its normalized consumption, and adherence to technology, and taking into account external factors, are of great importance, namely:

• gas blocks are laid at normal ambient humidity without precipitation for 15 minutes, and are corrected for about 3;
• high temperature increases the setting speed, in winter the glue hardens more slowly;
• it is not recommended to moisten them before laying the blocks;
• applied with a special spatula.

Compliance with the above rules helps to prevent premature setting.

The adhesive composition is applied only to the surface of aerated concrete blocks, cleared of debris, ice, snow.

The solution is prepared as follows:

• The required flow rate of the dry mixture and water, indicated on the package, is measured into the container. But, as a rule, to prepare a homogeneous mass, 220-250 mg of pure water is added to 1 kg, the minimum temperature of which is allowed within 15-18 ° C, and the maximum - 60 ° C.
• Everything is thoroughly beaten until a homogeneous consistency is obtained manually or with a drill with a nozzle.
• After that, let it stand for about 5-10 minutes and mix again.

The solution can be used for about 3-4 hours, so it is kneaded in small portions. And they begin to smear them from the 2nd row, since to level the surface after the foundation, blocks of aerated concrete are immediately placed on a cement-sand mortar.

During the entire work, the glue is periodically stirred, it is not allowed to add water to the finished composition.

Consumption per 1 m3 of gas blocks of dry concentrate with a joint thickness of 1–3 mm is about 16 kg. But the exact amount depends on many factors, including:

• geometric dimensions of the block;
• surface defects;
• weather conditions;
• used tool for laying aerated concrete;
• the presence of reinforcement;
• uniformity, temperature and concentration of the composition;
• bricklayer qualifications.

The relatively accurate consumption of glue is determined by the formula: S = [(l + h) / l * h] * b * 1.4, where:

• S - mixture consumption in kg per cubic meter of gas blocks;
• l, h are the length and height of the block in m;
• b is the thickness of the seam in mm;
• 1.4 - conditional value of the dry mixture consumption in kg / m 2 with a layer 1 mm thick.

glue concentrate cost

Today, you can buy such products in almost every hardware store.

The solidity of the construction of gas blocks, the strength and service life of the structure under construction depend on the adhesive mixture, its composition, and the quality of preparation.