Aerated concrete today is one of thethe most inexpensive building materials. It makes blocks that have an impressive size and low weight. These qualities ensure easy installation, which made the aerated concrete so popular among individual builders and professionals. If you, too, decided to use aerated concrete, then it is worth firstly familiarizing yourself with the technology of its masonry. Only in this case you will be able to achieve high quality work.
Recommendations for masonry
Laying of walls from the gas block by specialistsis carried out only after the products are further processed. For this, a special plane is used. This recommendation is due to the fact that the specificity of the production of the material described assumes that there is a tolerance in dimensions along the faces. In general, experts use different tools for laying the gas block, you will learn about it after reading the article.
Advice from a specialist
It is important to remember that aerated concrete is porousmaterial. Despite the fact that it is homogeneous and dense, the surface absorbs moisture well. This indicates the need to equip the cutoff waterproofing. Some inexperienced builders do not attach special importance to this issue. If this step is bypassed, moisture will penetrate from below, moving along the wall and rising to the level of the third floor. To do this, it is usually used cheap and common material today - roofing felt.
However, it is necessary to take into account the period of its operation.Even under the most favorable conditions, it is 5 years. Therefore, the best option will be a moisture-repellent film. Laying the gas block with their own hands is better done using products whose sides have recesses in the form of thorns and grooves. Such blocks can be fitted to each other sufficiently tightly, which will ensure the strength of the structure.
Preparation before commencement of masonry
After hardening of the foundation and strength setconcrete on its surface it is necessary to carry out leveling screed. The solution for it is prepared from cement and sand. With the help of this composition it will be possible to eliminate the mismatch in height, which could cause uneven walls.
The horizontality of all parts of the tape followscontrol the building level. On top of the waterproofing material. Preliminary it should be cut into strips, the width of which will be somewhat larger in comparison with the foundation. On each side the material should hang 10 cm.
Recommendations for laying
Gas block laying is carried out with the help ofSpecial adhesive compounds, which are presented for sale in the form of dry mixtures. But some masters prefer to use a traditional mortar, which is closed at a ratio of 1 to 3.
In favor of purchased products, it should be said thatwith its use, the thickness of the seam can be only 2 mm. This indicates that there will be no bridges of cold in the wall. In addition, this method of fastening blocks reduces installation time. To dilute the glue, no additional space is required. But for the solution it will be necessary to deliver cement and sand, not to mention the formation of dirt and dust on the site.
Начинать кладку газоблока необходимо от углов.Once the extreme blocks have been installed and aligned, a rope must be stretched between them to guide the wizard when laying the rest of the products. In order that it does not sag, you should apply a kapron cord or fishing line. For a more reliable coupling between the bricks, the side faces, spikes and grooves are treated with glue.
When laying the first row it is important to controlthe location of the upper cut in the plane of the horizon. If necessary, this can be carried out processing blocks using a planer. The second level is built on the same principle. However, it is important to note that the joints in the adjacent vertical rows should not coincide. The first corner block should therefore be cut in half. Through the level will be located half of the block, whereas in the next row - a solid product.
The laying of the gas block must be carried out withintervals of 2 hours between the rows. So the adhesive will seize well. Therefore, it is necessary to breed it with the calculation on one level. Under the windows and doors need to leave empty places. Before installing the units of the next row in level, these places are further strengthened. Over openings for this set jumpers from the bars of the valve. They must be in sawn grooves. They should be placed on the wall 20 cm on each side of the opening.
First row masonry features
Whether the first row is properly laid,depends on the accuracy of the geometry of the entire building. If you did everything correctly, then the subsequent rows will be able to build much faster. Laying the gas block in the first row should be carried out on a cement-sand mortar. This will smooth out the level drops. A water-retaining substance should be added to the solution, while the composition is applied with a trowel. The additive will eliminate the rapid absorption of moisture by the material, because it is known that to build strength, the solution should not quickly lose moisture.
Start laying the first rownecessary from the highest point of the foundation. If you purchased blocks with grooves and ridges, the products should be positioned so that the ridges are directed outwards. This will facilitate the finishing work. As practice shows, polishing dowels is much easier than filling them with plaster mixture. As soon as the aerated concrete block can be installed, it is necessary to check its level and correct it with a rubber hammer if necessary. Normal can not be used, as it will damage the surface.
Description of the technology
Выровнять внешние углы первого ряда необходимо с using a building level. Position can be checked using the level. Between the installed outer corners, stretch the cord and fill the row with blocks. Berth facilitates the control of masonry.
After filling the row and setting the cementmortar should perform the reinforcement of the first row. There is an opinion that this stage can be bypassed, because the blocks are laid on the foundation. Some do just that, it saves money, but as a result, cracks appear on the bearing walls.
Features of the work
Изучая особенности кладки первого ряда газоблока, You can understand that the perfect alignment of products in the corners of the building is impossible to achieve. However, it is important to ensure that the difference in height of individual angles is not higher than 3 cm.
The blocks are stacked so that theya little bit above the base. This parameter should force 50 mm. The zone, which acts as a reference, should not appear below the calculated one. This zone is the perimeter of the block, which is in contact with the foundation. Experts recommend using Ceresite ST-21 glue for stacking the next front rows. This recommendation is due to the fact that the composition contains water-holding additives. It does not freeze for a full hour. This mixture is quite expensive, but it justifies the high price. During the above-mentioned time, the master will have the opportunity to correct the shortcomings made during installation.
By purchasing cheap glue, you can'tguarantee a successful outcome. Stretching the cord should be strengthened between the lighthouse blocks. If the distance between them is quite large, then another intermediate product should be installed in the center, which will eliminate the sag of the cord. Not only the stability and reliability of the building, but also the consumption of the adhesive composition depends on the evenness of the first row of the masonry block. It is important to follow the standard, which states that about 1.2 bags of dry mix should be left per cubic meter of the block. If a gas block with a groove and a comb is used in the process, then one bag of glue will be needed for the volume of material mentioned. To level the resulting layer should use a grater.
Home craftsmen who have no experience incarrying out the work described in the article, quite often they ask about the cost of laying a gas block. Pay for a cubic meter of masonry gas block with tongue-and-groove system will have 1100 rubles. minimum. The maximum price reaches 2700 rubles. If you plan to use a flat gas-block in your work, then the minimum price per cubic meter of masonry will be 1,200 rubles, while the maximum will be 2,800 rubles.