For laying gas silicate blocks, special glue or regular glue can be used. building mixture. 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 masonry joint thickness (2-10 mm).
- cement-sand mortar is much more expensive than glue. The consumption of adhesive 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 masonry joint thickness (2-10 mm). It can be used to level horizontal and vertical surfaces, and the layer thickness can reach 5 mm;
- the 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 glue is quite easy to prepare and apply, which makes this material very convenient to use.
Adhesive composition
Glue for gas silicate blocks 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 increase the strength, frost resistance, water resistance and other parameters of the glue.
Why is adhesive for a gas silicate block better than a solution of cement and sand?
All elements that make up the adhesive for blocks have increased strength, frost resistance and water resistance.
There are opposing opinions among builders. Some claim that it is absolutely not difficult to lay blocks with glue, while others claim the opposite: in order to lay blocks with glue, competent masons are needed. The situation is further complicated by the fact that there are regions for which it is absolutely not common and in which it will be quite problematic to find specialists to perform such work. But, according to experts, even a non-professional can lay blocks. To do this, you just need to carefully study the topic of execution construction work using gas silicate and foam concrete blocks, and then strictly follow the instructions you have 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 for reliable bonding. gas silicate blocks.
Glue selection
Of course, it is most reliable to purchase glue from the direct manufacturer of the blocks. But very often its cost is unreasonably high. As a rule, the price tags for such goods are increased several times.
Experts say that any glue that is intended for outdoor work can be suitable for building a private house using gas silicate blocks.
Preparing the mixture
In order to prepare the glue, you need to add the dry mixture to a construction bucket with a small amount of water, while stirring constantly. After 7-10 minutes, stir again.
The dry adhesive mixture for gas silicate and foam concrete blocks is mixed with water using a construction mixer or drill with a special attachment. If you don’t have a mixer, you should take into account that the greater the power of the drill, the better the adhesive mixture will be mixed. You can use any water; the water consumption is indicated on the packaging of the dry mixture.
So, pour into a construction bucket required amount water. While stirring constantly, gradually add the adhesive dry mixture. Approximately 7-10 minutes after complete dissolution, re-mix the adhesive mixture.
To maintain the required consistency of the glue during construction work, it is necessary to stir it periodically.
In order to properly prepare the glue, universal recipe does not exist. Each brand and each manufacturer has its own recipe for preparing the adhesive solution. Before purchasing, you should remember that the quality of the glue 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 know that an overdose of water significantly worsens 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 winter time years, when the air temperature reaches -15°C, you need to use frost-resistant glue, which includes anti-frost additives, as evidenced by the inscription on the packaging of the dry mixture.
The order of laying blocks
The blocks themselves are laid 15 minutes after the working surface is prepared.
First of all, if necessary, you need to prepare work surface. It should be firm, dry and free of foreign materials. Soot, dust, oil and loose elements must be removed. Significant surface unevenness must be leveled; for this purpose, glue for gas silicate and foam concrete blocks can be used.
So, on a previously prepared work surface, apply a layer of adhesive mixture using a trowel, then level it using a notched trowel. must be laid no later than 15 minutes after you apply the glue to the work surface. You can adjust the position of the block within 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.
Correct laying of the block involves applying glue to the horizontal surface of the already laid bottom row and to the vertical part of the previous block. If it is necessary to lay an additional sawn block, it must be coated with glue on both sides.
The correct order of applying glue is: on the horizontal surface of the already laid bottom row and on the vertical part of the previous block.
Adhesive for gas silicate and foam concrete blocks can significantly reduce consumption adhesive solution, due to its special composition, which allows you to lay blocks with seams of 2-3 mm. Of course, glue consumption primarily depends on the quality of the blocks used. When using blocks with a perfectly flat 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 a dry adhesive mixture with some reserve.
Features of use
When using glue for laying gas silicate and foam concrete blocks, it should be taken into account that only the second row of blocks is laid on the glue. The first row should be in mandatory laid on 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 a structure during its operation.
If you plan to lay gas silicate blocks in one row, then you must use glue. Since it has the same density as gas silicate. By laying gas silicate and foam concrete parts on cement mortar, which has a density of about 2000 kg/cm², the end result will be “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 using glue for, claim that the most practical way laying such blocks in 2 rows (20 cm each).
You need to remember that only the second row of blocks is placed on glue, and the first is placed on cement mortar.
When performing masonry work, you should take into account external factors influences that play enough important role. In particular, this refers to the air temperature and humidity in the room. For example, a decrease in room temperature, as a rule, entails a significant increase in the setting time of the glue. And, conversely, increasing the temperature sharply reduces the setting time. In addition, due to the room temperature, the formation of shrinkage cracks. In rooms with high humidity drying of dry adhesive mixtures is significantly slower. And in rooms with insufficient humidity, due to the enormous speed of setting, microcracks appear in masonry joints. So if you don't want to get extra headache, monitor the humidity and 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 applied correctly (thinly), otherwise using it will cost you a pretty penny.
And for such work you will need a certain skill, dexterity and a fairly smooth foam concrete or gas silicate block! It should be taken into account that expensive mixtures are not designed for thick masonry layers; they will simply crack and burst. If everything listed above is missing, then the masonry should be done using 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 mason is capable of performing such work. Based on this, when hiring masons, immediately discuss this condition with them.
Comments:
Adhesive is used for gas silicate blocks when laying walls built using gas silicate and foam concrete blocks, as well as brick slabs.
Adhesive for gas silicate blocks has a number of advantages: it is flexible, can withstand low temperatures, and repels moisture.
Properties and technology of use
IN finished form masonry glue looks like a viscous, monotonous mass. Its base is cement. Various additives give it plastic properties, retain moisture and push out small air bubbles from the mixture. Thanks to its constituent components, the adhesive protects.
Universal adhesive for gas silicate blocks contains a mandatory ingredient that prevents the blocks from absorbing moisture from the adhesive mixture. At the same time, the additive retains moisture in the adhesive solution and allows the blocks to be securely held together.
For thorough mixing it is necessary to use construction mixer.
By improving the composition, additives increase the strength, frost resistance, and water resistance of the solution.
Manufacturers produce glue for gas silicate blocks:
- ordinary;
- frost-resistant.
For operation at low temperatures (-5-15°C) purchased ready-made composition with resistant to low temperatures additives or a special component is added to the regular one.
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To dilute the adhesive mixture, you will need 2-2.4 liters of any water per 10 kg of dry mass.
Water is poured into the container, then the measured amount is poured out. Mix using a construction mixer (drill with a special attachment).
The solution is infused for 10-15 minutes and mixed again. The prepared composition must be used within 2 hours.
A prerequisite for a high-quality adhesive mixture is adding dry components to water, and not vice versa.
Care should be taken when mixing. The dry mixture contains cement. When preparing and styling, it is advisable to use a mask and gloves to protect your skin and lungs.
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Laying technology
The base must be cleaned of dust, paint, grease stains, and bitumen.
You can use a notched trowel or trowel to apply the glue.
The first row of blocks is laid on the foundation, which is held together with traditional cement mortar. This must be done to level the initial row; the thickness of the seam between the bricks can fluctuate and reach several cm.
The second and subsequent rows are laid on gas silicate glue. If the ambient temperature is more than 30°C, it is necessary to moisten the bricks before applying the mortar.
The adhesive mass is applied and distributed onto the prepared surface with a notched trowel. A special trowel-bucket will help you apply the solution vertically.
Within 15 minutes, use a rubber hammer to level the masonry. Excess solution is removed.
The glue dries within 24 hours. The greatest degree of strength of the laid wall occurs after 3 days.
Not only a mason, but also a non-professional with with skillful hands. To do this, it is enough to carefully follow the technology of laying gas silicate blocks.
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Pros and cons of glue
The adhesive used for gas silicate blocks compared to conventional adhesive cement-sand mortar has distinctive advantages.
Easy to dilute, consists of only two components for mixing - water and dry mixture. Does not require large containers for preparation, for example, a concrete mixer. Less time and labor is required to prepare the adhesive composition.
No storage required large quantity components - sand and cement. Economical - seam thickness is 3 mm. Due to the additives, the material is plastic, non-flammable, and does not create conditions for the appearance of mold.
Used when laying down to -5°C, frost-resistant mixtures - up to -15°C. Possibility of leveling masonry within 10-15 minutes. The thin seam provides excellent thermal insulation. Dry mortar can be stored for a long time.
Can be used for gluing various surfaces. Simply apply and remove excess. When diluted, it allows you to avoid debris and dirt, which is convenient for erecting partitions and remodeling walls in an apartment.
Glue for gas silicate has one significant disadvantage. It is not used if the sizes of the bricks vary and it is necessary to lay seams of different thicknesses.
Additionally, block adhesive can be used to level porous surfaces, for waterproofing walls, when laying on a base made of cement plaster or brick tiles.
Glue is purchased from next calculation: for a mortar layer thickness of 2 mm, 3 kg of dry mixture is required for every 1 m².
The consumption of the adhesive composition depends on:
- stacker experience;
- quality of installation;
- the quality of the blocks themselves (how smooth the surface is formed).
For quick installation of slabs and blocks made of aerated concrete, foam concrete and gas silicate, adhesive for gas silicate blocks is used. The price of block adhesive depends on the type, brand, base material and application. Adhesive for gas silicate blocks is produced using cement based and fine sand with various additives.
- plastic;
- weatherproof;
- moisture resistant;
- economical.
- sets quickly.
Before applying glue for gas silicate blocks, it is necessary to carefully prepare the base - clean it of dirt and degrease it. The dry construction mixture is mixed with water until a ready-made solution is obtained, after which it is applied to the surface using a notched trowel. This glue forms a thin, strong seam between the blocks, which significantly improves the wear resistance of the structure.
The Master Tibot construction hypermarket sells a wide range of not only adhesives for aerated silicate blocks, but also adhesives for aerated concrete blocks. From us you can buy glue for gas silicate blocks at the most affordable price in the city. We deliver goods throughout Moscow and the Moscow region. You can check the cost of the selected products in our online store.
- Glue composition
- Glue consumption
- Glue storage
- Manufacturers and price
- Main characteristics
- Glue Applying Tool
When choosing adhesive for aerated concrete, you want to know how they differ from each other and whether there are other adhesives. Yes, there are other adhesives (foam, cement mortar) that we wrote about in this article. Well, now specifically about glue, which is very plastic, sets quickly, and also hardens without shrinkage.
Composition of adhesive for aerated concrete
The composition of any cement adhesive for gas blocks includes:
- Portland cement.
- Washed and sifted fine sand.
- Modifiers.
- Polymer additives.
Portland cement is the main adhesive binder. Fine sand serves as a placeholder. Modifiers retain moisture. Polymer additives improve the bonding properties of the adhesive and adhesion to aerated concrete.
Glue performance characteristics
When choosing an adhesive, you need to pay attention to its performance characteristics, which can vary as follows:
- Exposure time – 10-20 minutes.
- Block adjustment time – 3 -15 minutes.
- Hardening time – 1-4 hours.
- Layer thickness – 1-8 mm
- Operating temperature – from -25°С to +35°С.
It is very important to choose glue according to temperature environment, if the thermometer is below zero, use frost-resistant adhesives . Also try to choose glue with the minimum recommended application thickness.
Advice! To reduce glue consumption, try to prepare small portions, precisely calculated for several gas blocks.
| № | Manufacturer | Glue price for 25 kg (rub) | Consumption (kg) per 1m2 layer 2 mm | Seam thickness |
| 1 | Ceresit CT 21 (Winter) | 300 | 2.6 | 2-10 |
| 2 | Baumit PBK |
200 | 2.5 | 2 |
| 3 | Baumit (winter) | 270 | 3 | 3 |
| 4 | KREISEL | 250 | 2.5-3 | 1-3 |
| 5 | AEROC (winter) | 240 | 2 - 3 | 1-5 |
| 6 | Ytong(winter) | 260 | 3 | 1-3 |
| 7 | Bonolit | 220 | 3 | 2-8 |
| 8 | BIKTON KLEB FROST | 230 | 3 | 2-3 |
| 9 | Polymin – PB 55.75 | 160 | 2 | 2-10 |
For laying aerated concrete they also use:
- Special glue;
- cement-sand mortar;
- polyurethane foam adhesive.
Polyurethane adhesive foam
Adhesive foam for aerated concrete masonry is a fairly new material that has not been tested by time, and that is why it does not inspire confidence in many. In addition, the question of the environmental friendliness of this foam arises. Not all foam is suitable for construction load-bearing walls, although some manufacturers have created such an option.
If we compare the consumption of foam and regular glue, they are approximately equal. It is believed that foam seams are 30% warmer than conventional adhesive ones. In terms of price/consumption ratio it is approximately the same as glue.
Testing glue and foam for aerated concrete
Disadvantages of laying aerated concrete on cement mortar
- Thick seams 8-15 mm;
- High consumption;
- Cold bridges at the seams;
- Mix the solution for a long time;
- Difficulties when laying in cold weather;
Typically, glue calculations are made based on cubic meters of aerated concrete. Manufacturers write that the consumption is about 25 kg of dry mixture per cubic meter, but in practice the consumption is higher and amounts to 35-38 kg, that is, exactly one and a half bags of dry mixture.
Such calculations are suitable for gas blocks of any thickness, so it is believed total area applied surface of blocks in a cube.
The glue consumption is greatly influenced by the geometry of the blocks; the smoother the blocks, the better. You also need to take into account the glue for the reinforcement in every third row.
Glue can be applied different instruments, for example, a trowel paired with a notched trowel, or a notched bucket, or a carriage.
The carriage for aerated concrete is professional tool, which will greatly speed up the work. The carriage is designed in such a way that the thickness of the glue applied to it is always the same, and the special container with glue is very easy to refill. The cost of the carriage is about 1000 rubles. Carriages come in different sizes, for different gas blocks.
Storage and use of glue
Adhesive for aerated concrete should be stored in a heated room with low humidity. Add exactly as much water to the dry mixture as written on the package. It is advisable not to add too much cold water, since it will not set well, the water should be warmer than +10. Before applying glue, the blocks must be cleaned of dirt, dust and anything unnecessary. It's quite simple.
The building materials market is now developing rapidly, constantly being replenished with new and new commercial products. Each of them has its own characteristics, improved quality and improved structure. So, for example, if previously the walls of a house were built from bricks laid on a heavy cement mortar, and created enormous loads on the foundation, now everything is different. You can build from lightweight block elements durable home, gluing them together with an adhesive solution. This article will tell you what adhesive for laying gas silicate blocks or other types of block structures is.
Types of blocks used
The construction of a new architectural project invariably entails the selection of the necessary building materials. For a long period of time, brick remained the main element of construction, but now it is used less and less. The main reason This is due to the laboriousness of laying bricks. In addition, the price of ceramic analogues of bricks is significantly higher compared to the cost of glue for foam blocks.
Today steel is a worthy replacement for brick building blocks, presented in a wide variety on the construction market. Their main varieties are the following:
- Expanded clay concrete blocks. The material has a number of advantages. It successfully combines qualities such as high strength and low weight. The use of blocks involves a small investment of time to create durable masonry. Expanded clay concrete block elements allow the construction of buildings up to 3 floors high manually, without the use of special equipment.
- Concrete blocks. In construction residential buildings this material is rarely used because it has poor thermal insulation properties. However, their frost resistance and strength allow builders to use the material for the construction of buildings of economic importance.
- Gas silicate blocks. In the construction environment they are also known as cellular concrete. The profitability of their use is due to significant cost savings. The small dimensions of the gas silicate block save useful space.
- Polystyrene concrete blocks. When creating them, a special substance is added to a regular concrete solution, which helps make the material frost-resistant and has good properties. soundproofing properties, durable. The low price of polystyrene concrete blocks makes the final cost of construction low. Polystyrene concrete blocks are used in both private and industrial construction.
- Foam concrete blocks. When carrying out construction using foam concrete blocks, there is no need to use special equipment if the height of the building does not exceed 3 floors. Foam concrete blocks are used in the construction of cottages. Their main advantages include environmental safety.
Types of glue for laying blocks
Adhesive for foam concrete and other types of block structures is gaining popularity year after year. IN construction industry it is used more and more often, and the demand for the material is due to many undeniable advantages. First of all, of course, there is a reduction in labor costs, because there is no need to mix a cement-based solution, strictly observe the proportionality of the components, etc. And the question of how to calculate the amount of glue for foam blocks is solved faster and easier.
The basis of any adhesive composition consists of a cement-sand mixture, as well as various polymer additives that have the properties of structure formation, moisture retention and plasticization. It is not possible to prepare such a solution with your own hands, but manufacturers set a very affordable price for products of this kind in the range of 150-550 rubles for one bag weighing 25 kg. With reasonable material consumption for laying 30 blocks with standard parameters(600*200*300) one bag of dry adhesive mass is used.
A large variety of building blocks have now been invented, and each type requires its own adhesive composition with certain properties.
For foam blocks
Adhesive for foam blocks is a special mixture based on cement and sand, and the structure of these materials is somewhat different from that of the bulk composition used to prepare the classic cement mortar. Among the components of block glue is quartz sand, crushed to the smallest fraction.
Advice! Prepare glue mixture for blocks with the calculation of its production within 2-2.5 hours. After this time, the solution begins to quickly thicken, losing its original properties. Adding water will not correct the situation, leading to a deterioration in the characteristics of the glue.
After applying the adhesive composition, its thickness is minimal due to the absence of coarse components. In addition, the solution quickly gains strength due to the use of high-quality Portland cement in its composition. When laying a foam block on glue or a mortar with an adhesive base, you should know that this material consists of a whole complex of additives that significantly improve it specifications. Among these components there are compounds that retain moisture, increase the moisture resistance of block masonry and prevent the formation of mold. The presence of special additives in the adhesive mortar gives the seams between the blocks greater plasticity than that found in ordinary cement mortar.
Such a property as plasticity reduces the likelihood of deformations in the masonry, the appearance of cracks, distortions and cracks in the wall made of blocks. The inclusion of auxiliary additives by manufacturers in the adhesive composition allows them to obtain frost-resistant adhesive for foam blocks. Its main advantage lies in the fact that winter glue for foam blocks allows installation work even with negative temperatures up to -15 ºC.
For ceramic blocks
The use of ceramic blocks for the construction of buildings in Lately becomes more in demand. Ceramic blocks Outwardly they look like bricks, but inside they are empty. They are made from baked clay, and the dimensions of such building materials are significantly larger than those of ordinary bricks. Due to the internal void, the thermal conductivity of the material is reduced, and the thermal insulation properties, on the contrary, are increased.
To ensure that ceramic blocks are laid perfectly, experts recommend using special glue. This solution helps create seams with a thickness of only 2 mm. The composition of the adhesive in its structure, thermal conductivity and density is similar to ceramics, which allows the formation of a uniform heat-insulating plane.
Adhesive for ceramic blocks is made from cement-sand mixture with additives in the form of imported plasticizers. These components are made from organic and mineral raw materials and are characterized by water-repellent properties.
For polystyrene concrete blocks
Polystyrene concrete blocks are among the building materials made from lightweight concrete. They contain mineral compounds of organic origin. The main components of the adhesive solution are water, Portland cement and additives, including small polystyrene foam granules that have a porous structure.
The unique combination of various useful components in the glue gives the finished walls such characteristics as good hydrophobicity, good thermal insulation properties, resistance to rotting, good load-bearing capacity, transmitted and finished walls. This adhesive composition is sold in the form of a dry mixture, and requires mixing the powder with water and thorough stirring before use.
For gas silicate blocks
Glue for cellular blocks, which also has another name - gas silicate, is presented in stores various brands, personifying different manufacturers. Prices for glue for gas silicate blocks vary between 115-280 rubles, but this cost does not always indicate good quality adhesive composition. Sometimes the consumer has to overpay money just for a well-promoted brand. To avoid making a mistake, construction experts advise purchasing from the manufacturer not only the glue itself, but also building blocks of the required variety. According to statistics, the use of gas silicate blocks helps reduce the final cost of construction by approximately 40%.
Adhesive for gas silicate blocks has several beneficial benefits, namely:
- Low cost. The glue consumption for gas silicate blocks is approximately 6 times lower compared to cement-sand mortar, and the cost is only twice as high.
- Resistance of the composition to atmospheric precipitation (snow, wind, rain).
- No cold bridges. There are no layers formed in the material, characterized by high level thermal conductivity, causing a decrease in the uniformity of block masonry.
- High strength. If we compare the glue for gas silicate blocks with the cement-sand mortar mentioned above, it helps to form masonry from blocks of greater strength.
When choosing adhesive for a gas block, you should pay attention to its composition and technical characteristics, because such information will help to create an accurate picture of what components the solution is made of.
This is interesting! Frost-resistant adhesive for gas silicate blocks consists of special substances that allow it to be used even at low temperatures (-15 ºC, and sometimes even -25 ºC) outdoors.
It will be useful to know what the fraction size is bulk materials components included in the solution, at what temperatures the manufacturer recommends using the product, what the recommended layer thickness should be. It is also worth paying attention to the label, which displays useful data on the drying period of the adhesive solution, the amount of adhesive used during the work, etc.
Universal glue
Universal glue for blocks different brands and types allows the consumer to purchase a high-quality dry adhesive mixture at a favorable price, which can later be used both for gluing foam block elements and for fixing aerated concrete, ceramic, and polystyrene concrete blocks to each other. Among the most famous universal adhesive compositions for building blocks are TM Knauf and Varmit adhesives. They are designed to work in winter and summer periods years, are made from environmentally friendly components, are frost-resistant, moisture-resistant and cost-effective.
How to calculate how much glue you will need
Glue consumption when laying foam block walls depends on several factors. Important when performing calculations, it has the type of block element. For example, for cellular block You will need more glue, since the material is porous, which means it absorbs moisture well. Also, the level of consumption depends on the brand and manufacturer of the adhesive composition.
In general, the consumption of any type of glue for blocks is more economical compared to a conventional solution of sand and cement. Laying blocks with its use is obtained with thin seams, and accordingly, the consumption of the composition is reduced by about 6 times. Using this modern material as an adhesive for blocks it makes it possible to achieve a seam thickness of a maximum of 5 mm, and if laying technologies are followed - only 2 mm or even 1 mm. A small seam prevents the development of cold bridges in the walls, and the consequences associated with this unpleasant phenomenon - the appearance of fungus and dampness.
The geometry of the blocks themselves also has a certain influence on the glue consumption. If the building material is uneven, then more adhesive solution will be needed for its installation.
To minimize solution costs, it is important to determine how much glue is needed to lay a cube of foam blocks. Knowing this information and also exact amount block elements, you can easily calculate the amount of dry glue required for construction. According to the standards established in construction, the consumption of aerated concrete adhesive per 1 m 3 is no more than 1.6 kg, provided that the joint is thin 1 mm. However, this condition is met only with a perfectly flat surface. Sometimes per 1 m 3 building material it takes up to 30 kg of dry adhesive composition. On average per 1 cubic meter. gas blocks, you have to waste 1 bag of adhesive composition weighing 25 kg. But this is only from a theoretical point of view. Often the waste is 1.5 packages of dry weight, or 37 kg. There are several reasons for this:
- You need to know exactly how to lay gas silicate blocks or block structures made of aerated concrete. The experience of the masonry worker has a great influence on the quality of workmanship.
- Surface irregularities increase the consumption of glue for blocks.
- The number of layers of adhesive solution affects its consumption.
- The weather in which the laying of building blocks is carried out.
- The number of rows formed by laying block structures.
Wondering what glue consumption is aerated concrete blocks optimal, you should be aware that it will be smaller when using a fine-grained composition. In this case, the masonry turns out to be thin and as close as possible to the recommended parameters.
Manufacturers of adhesive solutions give different recommendations regarding what the glue consumption for 20*30*60 foam blocks should be.
They concern not only dilution, but also the laying of the composition, as well as the formation of block masonry with its help:
- First of all, read the instructions from the manufacturer before you start mixing the adhesive solution from the dry mass.
- Follow the technology for preparing the composition, then the material consumption will be less, and accordingly, the cost of glue for the foam block will be reduced.
- When laying foam blocks on prepared glue, observe the temperature conditions required by the manufacturer.
- To maintain the homogeneity of the composition, stir it periodically while laying the blocks.
- At self-installation blocks for glue and lack of proper experience from the master, it is better to purchase all materials with a reserve.
- By applying glue to the surface of the block with a notched trowel, you can reduce the consumption of the mixture by an average of 25-30%.
- It is better to prepare glue from dry mass in a warm room, and then deliver it to the site where the block walls are being erected.
The correct choice and use of glue for blocks allows you to build a high-quality and durable home with good thermal insulation properties.