Glue for gas silicate blocks - which one to choose, how to calculate and lay the mixture. Glue for gas silicate blocks: high quality and minimum consumption What brands of glue for gas blocks are

1. Adhesive composition for laying blocks ofcellular aerated concreteK21/1

2. Adhesive composition for laying blocks ofcellular aerated concretewinter K21/2(with antifreeze additive)

DESCRIPTION

The adhesive composition for laying blocks of cellular aerated concrete is a dry building mixture consisting of cement, natural quartz sand, mineral fillers and polymer additives. When mixed with water, it forms a plastic mortar mixture. Thanks to special water-retaining additives, the adhesive mixture provides excellent adhesion of the blocks even when applied in a very thin layer, which significantly reduces consumption. After hardening, it forms a durable waterproof and frost-resistant solution.

APPLICATION AREA

The adhesive mixture is intended for laying blocks of cellular aerated concrete with strictly maintained geometric dimensions and shape (dimensional tolerance ± 1–2 mm). The properties of the material make it possible to lay blocks with a small seam thickness (2-3 mm), to obtain a wall that is homogeneous in terms of thermal insulation and to prevent its freezing through the seams. The adhesive composition is also suitable for laying expanded clay concrete blocks and other piece wall materials, eliminating defects (irregularities, potholes, chips) in them. Used both inside and outside buildings.

BENEFITS

- suitable for indoor and outdoor use;

- reduces heat loss through the building envelope;

– high compressive strength;

- convenience and ease of use;

– waterproof;

- frost-resistant;

– has a high adhesion strength to the cellular concrete base;

- cost-effectiveness, the ability to perform masonry with a minimum thickness of the seam;

- environmentally friendly.

SURFACE PREPARATION

All surfaces on which the adhesive composition is applied must have a temperature of +5 to +25°C. The base must be even, strong, clean, free of dirt, dust, ice, oil stains, paint, particles that can impair the adhesion of the adhesive to the base. Loose and fragile areas of the surface must be removed. The surface of the blocks before applying the adhesive composition should be moistened with a small amount of water.

PREPARATION OF THE ADHESIVE COMPOSITION

Pour the dry mixture gradually into a container with water (water temperature from +10 to +25 ° C) at the rate of 0.22–0.26 l of water per 1 kg of dry mixture (5.5–6.5 l of water per 25 kg bag ). Stir the mixture with a low-speed (up to 300 rpm) drill-mixer or manually until a homogeneous, lump-free consistency. Set aside for 8-10 minutes to ripen the mixture, then mix thoroughly again. Properly prepared adhesive composition should have the consistency of thick sour cream, while the profile formed when the adhesive composition is applied to the contact surface with a notched trowel should not blur. In the process of conducting work, it is necessary to mix the finished solution from time to time to maintain the uniformity of its consistency. Adding water to the prepared adhesive to restore its consistency is not allowed. The solution retains its properties for 90–120 minutes (depending on air temperature). In winter, the use of the solution is limited to 30 minutes.

PERFORMANCE OF WORK

The masonry process is to be carried out in compliance with the technology of masonry element manufacturers and building codes. The finished adhesive composition is applied with a special tool (a box with a comb, a toothed bucket), corresponding to the width of the blocks. It is allowed to apply the adhesive composition on the contact surface with a steel spatula or trowel, leveling with a notched trowel. To apply the adhesive, it is recommended to use a notched trowel with a tooth size of 5 mm. The blocks are installed on an evenly distributed mortar mixture and their position is corrected with a rubber mallet within 5 minutes after laying. Excess mortar squeezed out of the seams is not overwritten, but removed with a trowel. The recommended thickness of the adhesive solution between the blocks after pressing should be 2–3 mm. With this method of laying, the total area of ​​​​cold bridges is maximally reduced. The minimum consumption of the mixture is achieved as a result of the installation of blocks with the correct geometry. The approximate consumption of the mixture is 1.6 ... 1.8 kg / m² / mm (about 25 kg per 1 m³ of blocks). Works should be carried out in dry conditions, at an air temperature of +5 to +25°C. Protect the finished masonry from the weather with a construction film for a period of at least 24 hours. After completing the work, thoroughly rinse the tool with water. Water used to clean the tool must not be used to prepare a new portion of the adhesive.

PRECAUTIONS

The material contains Portland cement and silica sand, which can cause eye and skin irritation. The use of personal protective equipment is strongly recommended to protect against contact with the mixture in the respiratory tract, eyes and skin. If mixture comes into contact with skin, rinse with water. If adhesive gets into eyes, rinse thoroughly with clean water and seek medical attention immediately. Avoid breathing dust. Keep out of the reach of children.

TECHNICAL INDICATORS AND CHARACTERISTICS

The foundation	mixture of cement with mineral fillers and polymer modifiers
Color	Gray
Maximum fraction, mm	0,63
Humidity, %, no more	0,3
Bulk density, kg/m³	1500...1600
Average density of solution, kg/m³	1600...1700
Workability after mixing with water, min	90...120 (RSC 21/1) 30 (RSS 21/2)
Setting end time, h, no more	24
Temperature of work, °C	+5...+25 (RSC 21/1) –10...+5 (RSC 21/2)
Seam thickness, mm	2...3
Water holding capacity, %	≥ 99
Consistency grade	K2
Consistency according to the diameter of the cone flow, cm	14…18
Consistency retention group	St-4
Grade retention time by consistency, min, not less than	90
Strength grade	M100
Compressive strength at the age of 28 days, MPa, not less than	10
Adhesion mark	A0.8
Adhesion strength with concrete base at the age of 28 days, MPa, not less than	0,8
Frost resistance grade	F75
Frost resistance, cycles, not less	75
Open time, min, not less	10
Correction time, min, not less than	5
Approximate consumption of the mixture, kg / m² / mm	1.6...1.8 (about 25 kg per 1m³ of blocks)

The specified parameters are valid at an air temperature of 20°C and a relative humidity of 60%. In real construction conditions, deviations are possible depending on working methods and temperature and humidity characteristics.

PACKAGING, STORAGE AND TRANSPORTATION

The adhesive composition is packaged in bags of 25 kg. On a pallet 1m × 1.2m - 1000 kg (40 bags). Shelf life in original undamaged packaging in a dry place at a temperature of +5 to +25°C - 12 months from the date of manufacture. When transporting in open transport, protect from atmospheric precipitation.

ADHESIVE COMPOSITION FOR LAYING BLOCKS FROM CELLULAR AERATED CONCRETE WINTER K21/2 (WITH P/M ADDITIVE)

In winter conditions, when the air temperature is below +5°C, it is necessary to use winter adhesives, in which special antifreeze additives are added. Designed for use in winter conditions down to minus 10°С. Bags with such mixtures are marked with a special marking.

ADDITIONAL INSTRUCTIONS FOR USE

In addition to what is indicated in the instructions, when using a winter adhesive composition, the following should also be taken into account:

- store bags with mixtures in a heated room;

– use warm water (max. 60°C) and mix the adhesive in a warm room;

– the temperature of the finished mixture must exceed +10°С;

- before and after use, keep the tool being used in warm water, insulate the utensils used for the preparation of the adhesive composition and, if possible, protect the workplace from wind;

- the time of use of the heated mixture is 30 minutes;

- the blocks used in the masonry should not be frozen, snowy or wet;

- it is desirable to preheat the blocks at least to a temperature of + 1 ° С.

ATTENTION

The given information determines the scope of the material and the method of carrying out the work, but at the same time it cannot replace the appropriate training of the performer of the work. Current building regulations must be observed. The manufacturer is not responsible for the misuse of the material, as well as for its use for purposes and conditions not provided for by the instructions.

Gas silicate blocks are a structural and heat-insulating material with a cellular structure. They are obtained from a mixture of quartz sand and lime, in addition, with the addition of a small amount of cement. Therefore, glue for gas silicate blocks is necessary for the construction of walls, as well as any other structures that have a joint thickness of 2 to 10 mm. It is also suitable for leveling vertical or horizontal surfaces.

Such glue is a gluey dry mix, consisting of cement, various additives and fine filler. Additives have water-retaining and plasticizing properties. With their help, strength, frost resistance and moisture resistance are significantly increased. These qualities are very important, since construction is often carried out in adverse climatic conditions.

High-quality gas silicate adhesive has excellent thermal insulation properties, is incredibly durable, has high adhesion and is easy to apply. It can be used to connect not only gas silicate blocks, but other cellular concrete materials.

Types and brands

It is divided into two main types - summer and winter.

Winter glue can be used at temperatures from +5 to -10 degrees for indoor as well as outdoor work. It contains special antifreeze additives. A snowflake is drawn on the packaging of such glue.

• Zabudov's glue is the most popular of the frost-resistant mixtures. In addition to its excellent technical characteristics, it adheres excellently to any surface and is very easy to use. It costs about 115 rubles for 25 kg.
• Prestige and Bonolith. The second to everything else is absolutely non-toxic and environmentally friendly. The price of glue for gas silicate blocks of the Prestige brand is about 140 rubles per 25 kg. Bonolit - 220 rubles.

The most common summer mixture is Insi brand glue. It can be used at temperatures from +10 to +25 degrees for laying walls and various partitions. It is economical, comfortable and has excellent water-repellent properties. Price from 185 rubles per 25 kg.

Method of preparation and application

To properly prepare the glue, you will need strong dishes, a plastic bucket is ideal. It is necessary to pour clean water into it, and then add the dry mixture. It is necessary to perform the actions in this order, and not vice versa, it is also impossible to pour out the whole mixture at once, this should be done gradually. Water needs to be constantly mixed, a drill with a special nozzle - a mixer will help well with this.

Glue consumption is approximately 1 kg per 0.20 l of water. But the consumption of the finished solution per 1 sq.m. is about 10 kg. Do not immediately dilute too much of the mixture, as after 80 minutes it will harden and become unusable. Work with the solution is carried out at any time of the year, but it is worth considering that the temperature should not be lower than -15 degrees. It should be noted that this instruction is not universal, the packaging of various brands describes in detail the method of preparation and use.

For laying gas silicate products, you will need tools such as a smooth grater or trowel, and for leveling, a spatula.

The adhesive used for gas silicate should resemble sour cream in its consistency. It is applied using a trowel, carriage or a special bucket with a curved edge. After it is applied, it is immediately leveled with a spatula. After laying the first layer, the surface of the blocks must be leveled with a planer. After 10 minutes, the adhesive sets, but completely dries only after 72 hours.

Why is glue better than mortar?

When faced with construction work for the first time, many site owners do not understand why builders choose glue for laying gas silicate blocks instead of mortar?

When using the solution, you may encounter the following problems:

• gaps may appear between the blocks;
• moisture will penetrate deep into the wall, in the future the wall will grow mold and fungus;
• after the layer has completely dried, the contact between the plates disappears, the strength of the structure is significantly reduced.

Adhesive Benefits

• applied in very thin layers and economically consumed;
• contains special components, thanks to which the blocks quickly seize;
• withstands any temperature changes;
• contains high-quality water-repellent substances that do not allow moisture to penetrate into the walls.

In works on the exterior decoration of buildings, blocks based on modern materials - gas silicate - are increasingly used. They are of high quality, reliable, look great as a result, they have an unbelievable cost. For their fastening, an adhesive composition is used that meets all standards of work and safety.

The plates retain heat well due to their structure, therefore, in order to preserve this property, you need to decide how to choose an adhesive for gas silicate blocks, given that a regular solution will not work.

Glue features

The adhesive composition, intended for the working process with gas silicate blocks, contains Portland cement, quartz sand of the finest structure, mineral additives, and plasticizers.

Thanks to these components, good water and heat retention, low adhesive layer thickness (from 2 to 4 mm) and excellent cohesive block-to-block strength are ensured.

Special glue features:

resistance to high temperatures, as well as low, high humidity;

Freezes in minutes

economy: the use of the composition justifies several times the cost;

high strength;

Easy preparation from a semi-finished state.

Compared with cement and sand compositions, the layer thickness of the sample in question gives an undeniable advantage.

In the first case, it reaches at least 15 mm due to the loss of strength at a lower value. The hygroscopicity of the blocks when using special glue does not affect the reliability of fastening even with a thickness of 2 mm.

Main selection criteria

In order not to check the quality of a special adhesive for gas blocks already in the course of work, you should familiarize yourself with the main criteria that each buyer should be guided by:

1) The manufacturer must be well-known, recommended by specialists, with a well-established technology for the production of compounds.

2) Improper storage of the mixture (humidity or cold) worsens the properties, leads to insufficient strength during masonry.

3) If the price is too low, you should think about the likelihood of counterfeiting or inappropriate quality;

4) The date of manufacture must correspond to the sale of the goods, otherwise you can not count on the desired results.

The packaging details the steps for the correct preparation of the mortar, as well as the operating conditions and the approximate drying time.

It should also be noted that in certain situations, the addition of antifreeze components is required.

Main manufacturers

When wondering which glue to choose for gas silicate blocks, it is worth considering the opinion of both amateurs and professionals, given the fact that the range offered on the construction market is very wide.

Domestic and foreign manufacturers every year increase the range of adhesives.

The most important firms are:

"Bonolit" and "Volma";

"Ytong" and "AeroStone";

· "Prestige" and "Glue Zabudova";

"Ceresit" and "Knauf";

"Azolit";

The most expensive and the cheapest

When considering the price category of adhesive mixtures, it is immediately worth noting that a very low cost per package should beware.

The reason for this is that the manufacturer will never set a low price for good bonding properties. It is also worth considering the differences between domestic and imported brands wisely. No doubt, many understand what they are.

Among Russian adhesives there are good options, ranging in total from 130 to 200 rubles. per pack of 25 kg. These are Clay Zabudov, Prestige and Pobedit TM-17. They differ in worthy indicators in terms of ease of application, the absence of harmful impurities.

The most expensive are the domestic "Bonolit" and the German brands Ceresit and Knauf. Their price threshold starts from 250 rubles. per bag 25 or 30 kg. They have excellent adhesion, low consumption of the mixture, increase the heat-insulating properties of the blocks.

Manufacturers of these brands produce different options for mixtures that differ in weight category and seam thickness.

Winter glue options are the highest in price - AeroStone and Ytong. Application in frost at around -10 degrees Celsius. The cost in this case depends on the quality of the antifreeze additives present in the mixture. It is also worth considering that the price category of winter adhesives is higher than that of summer counterparts. The same applies to the consumption of the substance: per 1 cubic meter. 25 kg is spent.

The most popular among the people

Based on the opinions of consumers, you can find out which glue to choose for gas silicate blocks, with the best match between quality and price.

According to market demand statistics, the German Ceresit model "CT 21" wins.

The preference of buyers is fully justified: the company declares the quality corresponding to its cost.

The adhesive consists of cement with polymer modifiers, as well as mineral additives. Perfectly applicable for outdoor and indoor masonry blocks of gas silicate. All seams with a minimum thickness of 2 mm, which increases uniformity.

Type of mixture: paper packaging, weight is 25 kg. The shelf life of the adhesive is one year from the date of manufacture when unopened.

Ceresit CT 21 will absolutely do no harm: an environmentally friendly substance. It is evenly and easily applied, resistant to low temperatures, does not lose its properties in case of excessive humidity, when using it, "cold bridges" do not appear, it has high adhesion with the material. The numerical value of the mixture consumption is 5 kg per 1 sq.m. Properties are stored up to 4 hours. Estimated cost - 280 rubles.

The manufacturer guarantees a long service life and no claims from the consumer.

For laying gas silicate blocks, special glue or ordinary mortar can be used. According to experts, it is best to use glue for the construction of external walls.

For laying gas silicate blocks, it is best to use special glue.

The use of special glue for masonry has the following advantages:

Glue for gas silicate blocks allows you to connect elements with a thickness of a masonry joint (2-10 mm).

• cement-sand mortar is much more expensive than glue. The adhesive consumption is six times less, and its price is only two to three times more;
• the use of fine-grained glue completely eliminates the appearance of "cold bridges" (a layer of material with high thermal conductivity, which leads to a significant decrease in the uniformity of the entire masonry and a significant increase in heat loss);
• using glue, you can lay walls made of aerated concrete, gas silicate blocks, shaped bricks and other foam silicate elements. The adhesive composition makes it possible to connect masonry elements with a thickness of a masonry joint (2-10 mm). It can be used to level horizontal and vertical surfaces, while the layer thickness can reach 5 mm;
• adhesive composition for has excellent thermal insulation properties, high adhesion, good strength, excellent ductility;
• if necessary, after laying the gas silicate block, it is allowed to correct its position within 10-15 minutes;
• The adhesive is quite easy to prepare and apply, which makes this material very convenient to use.

Adhesive composition

Glue for the gas silicate block is a dry adhesive mixture of cement with small additives and fillers in the form of water-retaining, plasticizing, air-repellent substances. These additives help to increase the strength, frost resistance, water resistance and other parameters of the adhesive.

Why is the glue for the gas silicate block better than the mortar of cement and sand?

All elements that are part of the adhesive for blocks have increased strength, frost resistance and water resistance.

Among the builders there are opposite opinions. Some argue that it is absolutely not difficult to perform with glue, while others argue the opposite: in order to perform block laying with glue, competent masons are needed. The situation is further complicated by the fact that there are such regions for which it is absolutely not common and it will be quite problematic to find specialists to perform such work. But, according to experts, a non-professional can also perform block laying. To do this, you just need to carefully study the topic of construction work using gas silicate and foam concrete blocks, and then clearly follow the instructions studied.

A distinctive feature of the adhesive mixture for gas silicate and foam concrete blocks is the presence of a special additive that prevents the blocks from quickly absorbing moisture from the adhesive mixture. This additive retains moisture in the adhesive solution, which allows you to reliably glue gas silicate blocks.

Adhesive selection

Of course, it is most reliable to purchase glue from a direct block manufacturer. But very often its cost is unreasonably high. As a rule, the price tags for such goods are wound up several times.

Experts say that for the construction of a private house using gas silicate blocks, any glue that is designed for outdoor work can be suitable.

Preparing the mixture

In order to prepare the glue, you need to add a dry mixture to the construction bucket with a small amount of water, while stirring constantly. Stir again after 7-10 minutes.

The dry adhesive mixture for gas silicate and foam concrete blocks is mixed with water using a construction mixer or a drill with a special nozzle. In the absence of a mixer, it should be noted that the greater the power of the drill, the better the adhesive mixture will mix. Any water can be used, the water consumption is indicated on the packaging of the dry mix.

So, pour the required amount of water into the construction bucket. With constant stirring, gradually add the sticky dry mix. Approximately 7-10 minutes after complete dissolution, mix the adhesive mixture again.

To maintain the required consistency of the adhesive during construction work, it is necessary to mix it periodically.

In order to properly prepare the glue, there is no universal recipe. Each brand and each manufacturer has its own recipe for preparing an adhesive solution. Before purchasing, it should be remembered that the quality of the preparation of the adhesive is directly dependent on the amount of water added to the solution and the dry mixture is added to the water, and not vice versa.

You should also be aware that an overdose of water significantly impairs the characteristics of the adhesive mixture. Therefore, before preparing the working mixture, you need to carefully study the instructions for its preparation.

Very often, some home craftsmen ask the question: what glue to use when laying blocks in winter? Experts say that in the winter season, when the air temperature reaches -15 ° C, it is necessary to use frost-resistant glue, which includes anti-frost additives, as evidenced by the inscription on the packaging of the dry mixture.

Block laying order

The laying of the blocks themselves is carried out 15 minutes after the work surface has been prepared.

First of all, if necessary, you need to prepare the work surface. It must be firm, dry and free of foreign matter. Soot, dust, oil and loose elements must be removed. Significant surface irregularities must be leveled; for this purpose, glue for gas silicate and foam concrete blocks can also be used.

So, on a pre-prepared work surface, we apply a layer of adhesive mixture using a trowel, after which we level it with a notched trowel. must be laid no later than 15 minutes after you have applied the adhesive to the work surface. You can adjust the position of the block for 10-15 minutes after you have laid it. The setting time of the adhesive at air and base temperatures from -15 to +25°C is 2 days, and the adhesive solution gains full strength after 72 hours.

Proper laying of the block involves applying glue to the horizontal surface of the already laid out bottom row and to the vertical part of the previous block. If necessary, lay an additional sawn block, it must be coated with glue on both sides.

The correct order of applying glue: on the horizontal surface of the already laid out bottom row and on the vertical part of the previous block.

Glue for gas silicate and foam concrete blocks can significantly reduce the consumption of the adhesive solution, due to its special composition, which allows you to lay blocks with seams of 2-3 mm. Of course, the consumption of glue primarily depends on the quality of the blocks used. When using blocks with a perfectly even surface, the adhesive consumption will be approximately 20 kg / m³ with a masonry layer thickness of 2 mm. Well, and, accordingly, if there is a need to lay blocks with a thicker layer, then the amount of glue will be increased. Experts say that it is always necessary to purchase an adhesive dry mix with some margin.

Features of use

When using glue for laying gas silicate and foam concrete blocks, it should be noted that only the second row of blocks is laid on the glue. The first row must be necessarily laid on the cement mortar. This is done in order to somehow smooth out the existing unevenness of the foundation surface.

Cold bridges appear due to a decrease in the thermal conductivity of the structure during its operation.

If you plan to lay gas silicate blocks in one row, then it is imperative to use glue. Since it has the same density as gas silicate. By laying gas silicate and foam concrete parts on a cement mortar, which has a density of about 2000 kg / cm², in the end you will get “cold bridges” in the form of masonry joints. The consequence of the formation of "cold bridges" will be a significant decrease in the thermal conductivity of the structure during its operation. Based on this, experts who have experience in using glue for, argue that the most practical way to lay such blocks is in 2 rows (20 cm each).

It must be remembered that only the second row of blocks is placed on the glue, and the first is placed on the cement mortar.

When performing masonry work, one should take into account external factors that play a rather important role. In particular, this refers to the air temperature and humidity in the room. For example, lowering the air temperature in the room, as a rule, entails a significant increase in the setting time of the adhesive. Conversely, an increase in temperature sharply reduces the setting time. In addition, shrinkage cracks may form due to room temperature. In rooms with high humidity, the drying of dry adhesive mixtures slows down significantly. And in rooms with insufficient humidity, due to the enormous setting speed, microcracks appear in the masonry joints. So, if you do not want to get an extra headache, keep an eye on the humidity and air temperature in the room.

The more the adhesive solution costs, the more professionalism will be required to use it. A good adhesive mixture must be correctly (thinly) put, otherwise using it will cost you a solid "penny".

And for such work, a certain skill, dexterity and a fairly even foam concrete or gas silicate block will be required! It should be noted that expensive mixtures are not designed for thick masonry layers, they will simply crack and burst. If all of the above is missing, then laying should be done on a regular mortar of cement and sand.

It is necessary, and rightly so! But this is not always possible. The reason lies in the lack of experienced specialists who could provide a masonry joint of 2-3 mm. Not every qualified bricklayer is able to perform such work. Based on this, when hiring masons, immediately negotiate this condition with them.

Glue is a mixture of substances that allows you to reliably adhere materials to each other. And in order for the seam to be strong and durable, a quality product should be used. To fix the gas silicate blocks, you need a special glue. Such a composition usually contains sand, cement, as well as organic and mineral plasticizers.

Currently, a wide range of products is presented in trade for working with gas silicate blocks. The result of the selection of such a composition is influenced by the preferences of the master and the conditions for the laying work.

What to choose a mixture for laying blocks

To recognize which adhesive for gas silicate is the best, it is worth considering customer reviews who have already managed to test the material on their own experience. Let us dwell in detail on the brands of glue that have gained the greatest popularity.

"Zabudova"

This mixture is great for mounting blocks in the winter. This is possible thanks to the ingredients included in it. There is a special additive that is not affected even by severe frost (frost-resistant). Most builders speak positively about the product, because it has such advantages as ease of application and elementary use. In addition, Zabudov's glue is inexpensive, which provides it with a leading position among all ready-made dry adhesives.

"Prestige"

This mixture is also not afraid of frost. It is used for laying blocks of cellular concrete, as well as slabs. A characteristic advantage of the glue is the speed of its preparation. In terms of economy, this composition is slightly inferior to the first, since its cost is slightly higher.

Bonolit

Such a composition for a gas silicate block can be used both in summer and in winter. Its main advantage lies in environmental friendliness. The glue does not contain unwanted impurities and toxins, absolutely does not pose any danger to human health. Perhaps this affects its cost, because it is more expensive than the options considered earlier.

Today, this building composition is actively used in the laying of gas silicate structures. The reputation of the adhesive is won by its positive properties:

1. The excellent thermal insulation characteristics of the mixture make it as similar as possible to cellular concrete. This will forever forget about frozen walls and heat leakage through the joints in the masonry.
2. The composition does not lose its properties even in direct contact with water, as well as the influence of very low temperatures.
3. The mixed solution is characterized by excellent plasticity, which makes its use comfortable.
4. The mixture is completely environmentally friendly. There is no release of toxic substances, since the product does not contain harmful impurities.
5. The composition is more expensive than previous products, and this is due to its qualities.

Aeroc

Mixtures of this brand are characterized by high strength characteristics. The composition is widely used in masonry blocks of cellular material, as well as for lining with a thin layer of blocks of internal and external surfaces. It turns out a seam with a thickness of 1-3 mm.

Glue is very popular due to the following properties:

• there are no “cold bridges” in the masonry;
• not exposed to moisture;
• not afraid of severe frosts;
• you can use the prepared solution for two hours, during which time it will not harden;
• capable of passing steam.

The high adhesion of the mixture makes it possible to ensure the solidity and high strength of the buildings under construction. The adhesive consists of cement, mineral fillers, as well as organic and polymeric modifiers.

"Win"

It is a multicomponent dry mix based on cement, quartz sand and various modifying additives. It is used for laying silicate block structures. Glue is quite suitable for summer and winter work. The material is popular as it is compatible with most Russian-made gas blocks.

The ready-made solution is highly elastic and technologically advanced, does not stick to tools very much. The applied layer is characterized by good moisture resistance. The adhesive has excellent holding power.

Mixtures of this brand are used for thick-layer masonry in the winter and summer seasons. In addition to laying blocks, they are widely used in the installation of ceramic tiles, attaching it to the blocks. When applying the composition, it is not necessary to level the surface. You can leave slopes and drops up to 1.5 cm. It is often used for indoor work to level block walls.

All presented compositions are safe, endowed with good plasticity and able to withstand severe frosts. Which mixture is best, you will decide when you explore them empirically.

The answer to the question of which glue is the best is ambiguous. The fact is that we presented the best adhesive mixtures, according to the opinion of the builders, who checked all their advantages and disadvantages in their work. The selection of glue can be carried out not only on the basis of personal preferences. Be sure to take into account the type and conditions of laying work.

How to calculate glue consumption

The dry composition is packed by the manufacturer in bags weighing 25 kg. The manufacturer chose this number not by chance, since this is the optimal mass of powder for the preparation of glue, sufficient for laying one cubic meter of blocks. This is provided that the technology for the production of the mixture and its application are not violated.

Let's clearly analyze the calculation of glue consumption using an example:

1. Initially, you tentatively determined that for the laying of all walls you will need, say, 63 cubic meters of gas silicate blocks.
2. With a laying layer thickness of 3 mm, the consumption of glue per 1 cubic meter of blocks will be 63 packing bags.
3. If the laying seam is 2 mm thick, then the mass of the required adhesive will be 5 kg less. In this case, 63 cubic meters will have to be spent
   63 x 20 = 1260 kg of dry glue.
   Move on.
   1260 / 25 = 50.4 bags.
   Rounding up the figure, the result is 51 bags.
4. The calculated value is the smallest amount of dry mix that will need to be spent on the building. Provided that its construction involves the use of 63 cubic meters of aerated concrete blocks. If we know the price, we can easily determine the total cost of dry glue.

If the construction involves the use of a solution of cement and sand, and the amount of work will be the same, then you will need 2 cubic decimeters of glue. That is, 1 cubic meter of mortar is needed for laying 5 cubic meters of blocks.

To prepare a cube of mortar, you will need up to 7 packs of cement. The total cost will also increase due to the price of sand and the rental of a concrete mixer. Considering all this, it is not difficult to determine how much cement is needed to lay 1 cubic meter of gas silicate: 7/5 = 1.4 bags.

By doing the right cost calculations, it is easy to verify the low cost of the adhesive. The remaining priorities can only be set by you.

When erecting modern buildings, it is important to ensure reliable adhesion of materials, which is achieved through the use of high-quality glue for gas silicate blocks. A properly selected adhesive composition and an accurate calculation of its consumption are the key to the longevity of erected buildings.