Is it possible to build with blocks in winter? Laying aerated concrete in winter - features of the work. Winter construction issues are also
Can I put it on glue?
It is very important in summer period carry out the arrangement of the foundation base, which must completely harden before the onset of the first stable frost. Only in this case can winter masonry technologies be successfully applied.
You can carry out masonry in the frosty season, following certain rules.
Low temperature conditions can complicate construction work that involves the hardening of cement mortars, so in cold winter period it is necessary to warm up the aerated concrete, and also use special anti-frost additives. Experienced specialists V construction industry It is recommended to combine the use of chemical and physical methods of protection with work on heating the stacked blocks and mortar.
Using winter glue or additives
The standard consumption rates of such an adhesive composition with a thickness of 0.2 cm are significantly reduced compared to conventional cement mortar, which allows you to obtain an optimal level of thermal conductivity.
Qualitative winter glue is characterized by high adhesion and moisture resistance, and also has frost resistance, therefore it can be used in the filling process and for leveling the surface.
The adhesive composition is based on Portland cement and fine-grained sand. The special feature is the addition polymer additives, improving adhesive properties and ductility indicators, as well as modifiers that minimize the risk of cracking. 
Peculiarities
Winter adhesive mixtures in subzero temperatures should be used within the first thirty minutes after dilution hot water 60 o C. A properly prepared adhesive composition should have a temperature of 10-20 o C. For blocks adhesive composition applied using .
Attention!
Masonry in frost requires mandatory cleaning of aerated concrete from snow and ice. The blocks also need to be preheated.
For this purpose, you need to build a frame base around the pallet with building material, cover the frame with film or a fireproof awning, and then warm it up using heating elements or a heat gun. It should be noted that insufficient or poor-quality heating of aerated concrete sharply reduces the final strength of joints, which is caused by the crystallization of water, which accumulates in the pores of the building material.
To sum it up:
- When laying in frosty conditions, it is necessary to use winter adhesive for aerated concrete or anti-frost additives in regular glue.
- The adhesive mixture is diluted with hot water strictly according to the instructions, which must be read on the packaging.
- Blocks need to be heated immediately before laying.
It is placed on a cement-sand mortar, to which special anti-frost components must be added in winter.
In production for interfloor ceilings In winter, antifreeze additives should also be added to concrete.
What temperatures can you work up to?
Not all antifreeze additives produced today by domestic and foreign manufacturers, comply with GOST 24211-2003.
High-quality winter glue for the construction of aerated concrete walls allows construction work to be carried out in conditions temperature indicators to minus 10-15°C.
With the same indicators, it is possible to use masonry mixtures intended for the construction of aerated concrete walls in low-rise construction conditions at negative temperature conditions. 
The use of standard, or so-called “summer” masonry mixtures with the addition of the anti-frost additive “Antifrost” makes it possible to guarantee construction work down to a temperature of minus 15°C.
Not too noticeable increase in price winter construction due to the purchase of special additives and adhesives, it can be compensated by a seasonal decrease in prices for aerated concrete blocks.
Useful video
If you still decide to build in winter, be sure to check out the proposed video story. You get a few important advice from a professional builder.
The foam block is made from cement, sand and water with the addition of a special foaming agent. At the same time, the material has excellent heat and sound insulation properties, is fireproof and frost-resistant, and also practically does not absorb moisture and does not shrink. Laying foam blocks should be carried out at air temperatures from +5 to +25°C. If the temperature is higher than recommended, the material must be constantly watered with water to moisten it, but in winter, when there is sub-zero temperature outside, during laying it is necessary to use glue, which contains a special anti-frost additive. It allows you to lay foam blocks at air temperatures down to -10°C.
When laying foam blocks directly on the foundation, you need to additionally form waterproofing. This will protect the material from excessive humidity. As waterproofing materials You can use roofing felt, polymer-cement solution and others.
Preparatory work
To begin with, the surface on which the foam block will be laid is properly leveled. This can be done using cement-sand mortar. Particular attention must be paid to laying the first row of material, because the laying of all subsequent rows will depend on this. The smoother the first row of foam blocks is laid out, the easier it will be to lay out the next ones. Lay material in winter at sub-zero temperature recommended adding to the solution antifreeze additive.
Unevenness when laying out the first row of foam blocks can be removed with your own hands using a plane. At the same time, do not forget to clean off dust and debris from the surface. Laying foam blocks begins with the installation of lighthouse foam blocks, which are installed in the future corners of the building. Next, a special cord is stretched between them, with the help of which it will be possible to lay out the rows much easier and more evenly.
Laying out foam blocks
It is necessary to mix the mixture for laying foam blocks in winter at sub-zero temperatures in small portions, stirring constantly. It is necessary to take water for it room temperature. The second and subsequent rows of foam blocks are laid out on a solution evenly applied using a special trowel. Particular attention must be paid to butt seams.
When laying the foam block, it is necessary to carefully press it, and the butt seams should be made no more than 5 millimeters thick. Upon completion of laying out each row of material with your own hands, the resulting surface must be cleaned with a plane.
Foam block walls, if they are too long, must be additionally reinforced at sub-zero temperatures. Also in need of reinforcement are surfaces on which heavy loads will be placed, and walls with windows and doorways. For this purpose, reinforcement with a diameter of about 8 millimeters is used, which fits into specially cut grooves in the material. To secure the reinforcement in winter at sub-zero temperatures, it is necessary to add an anti-frost additive to the glue, as well as to the installation solution. If any foam block was not installed quite correctly and evenly, you can correct it either with a plane, if it protrudes a little, or with mortar, if there is not enough height.
How to build a house from aerated concrete blocks? Which masonry mortar is it better to use? Is it necessary? How is aerated concrete laid in winter? Let's try to answer these questions.
Prices
Let's start with brief overview prices for work with aerated concrete blocks. It is needed for the reader to once again evaluate his strengths and think whether it is worth trying to do this work with his own hands or is it better to trust the professionals.
Let us clarify: the prices shown are current at the time of writing the article for Leningrad region. In different regions of the country they can be significantly higher or lower.
Let's get started
Tool
What tools are needed for laying aerated concrete?
- A mixer or drill with an attachment of similar functionality. We have to mix the glue.
- The container in which we will dilute the glue.
- Brush for sweeping away dust and debris.
- Hacksaw. It's better to take special tool for aerated concrete, but gardening is also suitable.
- A ladle that we will use to pour glue onto the blocks.
- Serrated and regular spatulas.
- Hand grater with sanding mesh.
- Rubber mallet.
- Level and plumb.
- Wall cutter or hammer drill.
Masonry
How is aerated concrete masonry made?
- The foundation is waterproofed. The walls will be porous; we need to prevent capillary suction of water. Waterproofing material - several layers bitumen mastic or a couple of layers of roofing felt.
- Then the first row is laid out strictly according to the level. The first row is laid on a cushion of cement-sand mortar (1:3) with a thickness of at least 2 cm; it compensates for unevenness of the base.
Vertical seams are coated only and exclusively with special glue; The next rows are placed on it. The instructions are related to the fact that the glue allows you to ensure minimum thickness seam, which makes the masonry more even and reduces heat loss.
- With ligation of vertical seams relative to the first row, corner blocks are laid. Then a mooring is stretched between them - a cord along which the row will be aligned.
The rest is quite ordinary - row by row, with the obligatory ligation of the seams by at least 8 cm and careful adjustment of the blocks using a mallet. The solution is poured onto the surface of the block with a ladle and spread with a notched trowel. The maximum seam thickness is 3 millimeters.
- Special elongated U-shaped blocks - lintels - are placed above window and door openings.
Insertion of partitions
Domestic load-bearing walls and partitions are erected with inserts into external ones. For this purpose, outdoor blocks main wall are selected from inside on the thickness of the partition; The first blocks in each row go into the recess and sit on the glue.
Reinforcement
How to reinforce aerated concrete masonry? Where exactly should the reinforcement be located?
Please note: in all cases, the groove or cavity with laid reinforcement is filled with cement-sand mortar.
Internal partitions are tied to the walls in the simplest way - pre-driven drilled holes pieces of reinforcement that are connected to the longitudinal reinforcement of the partition.
Features of winter masonry
Construction work in cold weather is hampered by the rapid freezing of mortar and glue. Is it possible to build aerated concrete walls in winter?
How is winter masonry different?
- Blocks are preheated. For this purpose, a frame is built around the pallet, covered plastic film or tarpaulin; the air in it is heated by heating elements, a heat gun or a conventional fan heater.
- Only frost-resistant glue is used. Corresponding solutions are available in the range of all major manufacturers; their price is 10-15 percent higher than that of conventional solutions. Most winter adhesives allow work to be carried out at temperatures down to -15 degrees.
- Use a container with a tight-fitting lid for glue.. When mixing, it is diluted with hot water.
- To prepare cement-sand mortar (for laying out the first row and filling grooves with reinforcement), antifreeze additives are used.
Construction work at temperatures below the operating temperature of the adhesive is not recommended. Even if the glue sets, the final strength of the seams will suffer due to the crystallization of unbound water in the pores.
Processing
How to cut technological holes for laying communications or openings in masonry?
Aerated concrete can be drilled using any Pobedit drills and core bits without using impact mode. Ideal option- use of diamond tools. Diamond drilling holes in concrete leaves the edges of the hole perfectly smooth; in addition, drilling with a diamond crown (as, by the way, cutting reinforced concrete diamond wheels) allows you to pass through reinforcement without changing tools.
Conclusion
It is possible that, having found out how much it costs to lay aerated concrete, the reader will prefer to use the services of professionals. If he gets to work on his own, we hope that our recommendations will be useful.
As always, the video in this article contains additional topical information. Good luck!
Is it worth building a house from aerated concrete in winter?
Is it easy to build a house from aerated concrete. Of course, you can do this in a short time and at minimal cost.
Moreover, you can start building your dream home even in winter!
Construction with aerated concrete in winter
To the question “Is it possible to build with aerated concrete in winter,” the manufacturers of this universal building material unanimously give an affirmative answer. Laying blocks in autumn-winter period is allowed, while the low temperature does not in any way affect the quality of the masonry. In order to begin construction, despite the vicissitudes of the weather, you will need special glue. designed for use at temperatures from +5 to -15 °C. If you decide to build a house from aerated concrete in winter, then under no circumstances use standard glue.
There are other types of glue, thanks to which a house or some other building can be built even at temperatures down to -20 °C. Construction from aerated concrete in winter has a number of features and rules - follow them, and the quality of the masonry will not suffer. But winter construction still has disadvantages - it is a higher cost compared to summer jobs and more long term laying blocks. From an economic point of view, laying aerated concrete in winter is not the most profitable solution.
Laying aerated concrete in the cold season
Have you decided to build a house from aerated concrete in winter? Then you should familiarize yourself with the technology of laying blocks in the cold season. Is it possible to lay aerated concrete in winter without knowing the specific features? Under no circumstances, otherwise the house will not last long.
Before laying aerated concrete at temperatures below zero, it is necessary to warm up the blocks - this must be done directly during construction. The blocks must be watered with hot water, the temperature of which is about 40 °C. The glue that joins the blocks must also be diluted with hot water, otherwise it will quickly harden. Dilute the glue into plastic container and be sure to cover it with a lid to slow down the cooling.
Before placing aerated concrete in winter time, be sure to warm up the blocks. The blocks must be covered with a banner made of dense material. The blocks can be heated using a heating element or similar equipment, and the banner should be pressed in this way. to hot air didn't go outside. Completely “seal” interior space This is unlikely to happen, but heat loss should be kept to a minimum. Only after warming up can you begin winter construction aerated concrete house. Warming up takes about an hour. A house made of aerated concrete blocks takes much longer to build in winter than in summer - that’s a fact.
How to store aerated concrete blocks in winter
You want the aerated concrete masonry to be of the same quality in winter as in summer. Then you should take care of creating the storage conditions that are necessary to preserve the technological characteristics. In case of long-term preservation. for example, for a period of more than 3 weeks, it makes sense to store the blocks in the original packaging. There is no need to open the aerated concrete completely or partially. Storing aerated concrete in winter is possible directly on the street; it is not necessary to remove the blocks indoors or under a canopy. The upper part of the original packaging completely protects the blocks from moisture. 2 weeks before the day on which the laying of aerated concrete is planned, the packaging must be removed, leaving top part. This time is enough for the accumulated moisture to come out of the blocks.
If the winter laying of aerated concrete begins in the near future, and long-term preservation of the blocks is not planned, then you can immediately remove the side part of the packaging to allow the blocks to dry. Leave only the top part, which protects the blocks from precipitation. Storing aerated concrete in winter is possible with full preservation of the technological properties of the material.
So, you can build a house from aerated concrete in the winter if you don’t have the opportunity to wait for the construction season - the construction will just go a little slower and cost more.
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IN general outline the rules for laying AEROC blocks do not differ from the rules for laying blocks from other manufacturers. In low temperature conditions, it is recommended to use special dry mixtures with additives that prevent the possibility of freezing. In addition, one should take into account the shorter shelf life of the mixture, as well as the need to heat the bonded surfaces of the blocks. It is mandatory to protect the masonry from wind and precipitation. It is not recommended to lay blocks in temperatures below -10ºC.
Winter adhesive mixtures AEROC
Conventional AEROC adhesive mixtures are suitable for use at +5°C. and higher. If the temperature drops below, it is necessary to use winter adhesive mixtures. These mixtures contain special additives that provide setting and low temperatures. Winter mixtures are suitable for use at air temperatures down to -10°C. Packages with winter mixture are marked with a snowflake.
Preparing the mixture
If possible, store packages with the mixture in a heated room
use warm water (preferably 20-40°C, maximum 60°C) and mix the mixture in a warm room
temperature ready mixture must exceed +10°C
the preheated mixture must be used within 30 minutes
Please note that the time for using the mixture prepared with heated water is shorter, since with more high temperatures the mixture hardens faster. It is not recommended to add water to the hardening mixture to improve the properties of the mixture. When cooling, to increase the temperature, you must add freshly mixed warm mixture. Overcooling of the mixture should be avoided both in the mixing container and in the masonry, which requires maximum protection from the wind. Wrapping the mixing utensils in insulating material will also help stop the cooling process.
Preparing winter mixture
It is permissible to prepare a winter mixture from regular glue AEROC using Sakret AF additives. The AF additive must be added in a proportion of 200-250 ml per 25 kg bag of adhesive mixture. You should first prepare the mixture using warm water and then add the additive and stir thoroughly again.
Wall masonry
used in masonry work AEROC blocks and fittings must not be wet, covered with drizzle or snow
the blocks should be preheated to a temperature of at least +1°C. Only dry, preheated blocks guarantee the required adhesion (absorbency)
from the moment the mixture is applied to the blocks until their final installation, no more than 5 minutes should pass.
AEROC blocks, packages with glue mixture and fittings during masonry work must be protected from wind and precipitation. It is also necessary to protect the horizontal surface of the masonry. At temperatures below 0°C, the glued materials should be heated horizontal surfaces blocks with a heater, radiator or blowtorch. The applied mixture can be opened for a maximum of 5 minutes, preferably an even shorter time.
How to Avoid Cold Damage
Damage caused by cold occurs when blocks are repeatedly completely wet and freeze. AEROC blocks have a guaranteed frost resistance of 35-50 cycles. A dry block of racks is resistant to temperature changes, therefore, in order to avoid damage caused by cold, it is necessary first of all do not allow the blocks to get wet when carrying out construction work in winter.
- Blocks stored on construction site, wall masonry, as well as horizontal surfaces of the panels must be protected from the effects of precipitation, which means covering them with waterproof materials, such as film, during precipitation.
- It is necessary to remove accumulated snow from the surface of the floors before the onset of a thaw to avoid getting the lower rows of masonry walls wet with melt water.
- Snow itself does not pose a danger to the blocks, but the water formed when the snow melts should not get inside the masonry.
- IN closed box at home during interior works it is necessary to ensure that there is sufficient air exchange in the building and that humidity does not condense on internal surfaces windows or cold concrete surfaces. Moisture accumulated on internal surfaces should not penetrate into the wall masonry.
Compliance with the above rules does not pose much difficulty for builders, and when correct implementation construction work in winter, wet AEROC products will not go through a single freezing cycle.
