Recently it has become very popular to use aerated concrete blocks in the construction of various structures . This is due primarily to the cost-effectiveness of this material, as well as high technical characteristics. At the same time, the use of special tools and materials, such as a saw, glue for aerated concrete blocks and others, can significantly improve the quality of work on laying these building elements.
Adhesive for aerated concrete
Glue for aerated concrete blocks is a mixture of dry consistency, which contains the following ingredients:
- fractionated quartz sand;
- Portland cement without additives;
- special dispersion supplements.
The use of this composition significantly improves the quality of the work performed, since the adhesive for aerated concrete blocks allows you to get a thin layer for connecting the elements (about 2 mm). Whereas when using a cement-sand mortar, the gaps are more than 5 mm, which increases the heat loss in the room.
Cooking composition
Glue for aerated concrete blocks can be prepared by observing the following points:
- the mixture is diluted in a ratio of 10 kg per 2–2.5 l of water, it is recommended to use a clean (without oil impurities) liquid with a temperature of more than 30 ° C;
- the solution is prepared in a special container, kneading with a spatula or an electric mixer;
- the finished mixture should have a consistency of thick sour cream, after which it is necessary to let the glue stand for about 15 minutes;
- before use, the solution must be stirred again;
- the finished glue must be applied within an hour, in the case of a longer period, the container must be covered with a film;
- glue consumption for aerated concrete blocks is about 2 kg of dry concentrate per 1 m 2 of working surface.
The prepared adhesive composition is characterized by a high degree of binding properties (adhesion) and ductility, and the compound withstands the effects of temperature, moisture and other environmental influences.
Glue laying
Glue for aerated concrete blocks (the price of which varies between 200 rubles per 25 kg) is easy to use. It will be useful to know the following points:
- the surfaces of the blocks must be smooth, in the presence of defects, they can be corrected using the prepared adhesive solution;
- preliminary wetting of concrete blocks is not necessary;
- glue is applied with a spatula, while the layer should be 2-8 mm;
- the blocks are laid by slightly pushing and turning;
- the position of building elements can be changed within 15 minutes;
- a strong adhesive bond is formed in a day, and the final drying takes place within 72 hours;
- With this composition, it is also possible to align the joints in the vertical direction.
Glue for aerated concrete blocks creates a strong connection, while increasing the thermal insulation properties of structures. The use of this composition will significantly improve the quality of work performed.