Cellular concrete

Rapid development of low-rise building has identified the emergence of new materials. Notable among them is cellular concrete (aerated concrete, gas silicate, cellular gas concrete). Besides the various advantages of this material are even and the high environmental impact. Porous concrete is produced in the form of blocks certain types and sizes. Externally, they resemble most likely pumice. His name he got from the cellular to the fact that the internal structure of this material is self-contained spaces filled with air. These bubbles define a low-density concrete (300-1000 kg/m3) and low thermal conductivity. According to its insulating qualities of cellular concrete (aerated concrete, gas silicate, cellular gas concrete) can be likened to a tree. In our country, units are produced mainly in three foreign technologies: "Hebel", "siporex" and "Itong. Work with cellular concrete - a pleasure. These blocks are easily sawn hacksaw or other cutting tool. Of these, one can construct a building of any kind. Easily produced such architectural elements such as bay windows and gables. Concrete is ideal for building arches. A small processing - and components become sharpened stones desired configuration. Uncomplicated by sawing the honeycomb blocks are easily converted into ordinary bricks. And with such material can be even to work! Build a house with his own hands. Ease of aerated determines its low pressure at the base of the building, which can significantly reduce the cost base. Specialists are encouraged to study the physical properties of porous concrete in order to avoid mistakes in construction. First of all, we must note its high thermal insulation. This concrete has a unique density. It is porous (cellular) vapor-and moisture-permeable material. Aerated pores allow water to easily penetrate. Of course, the wet concrete will not have the above-mentioned thermal properties. Therefore, in all phases of work with this material to protect it from weathering. Blocks must be stored under a shed in an isolated area from moisture. Unacceptable and in direct contact with the ground cellular concrete. Bad when wet honeycomb blocks are already stacked against the wall. Dry them will be difficult. Often, cellular concrete is used as a liner for masonry. Very good kolodtsevaya clutch with internal filling with concrete. Or veneer brick outside walls, collected from the cellular material. However, in this case must be considered and other physical characteristics of concrete - its water vapor permeability. Warm pair of premises which have a relatively high surface pressure, can easily penetrate into the concrete and easy to go outside. Brick wall, with its higher density is a serious obstacle to the warm air. He reflected on her long and is located in the concrete. It turns out that the walls are continually moistened and lose their thermal performance. Over time, they may blacken and become covered with mold. Brick veneer can be used only if necessary to provide produhi between a wall of concrete and masonry. In some publications on the properties of porous concrete states that it "breathes" like a tree. And so to live in the house of aerated concrete as comfortable as a wooden building. All this is so, so wrong. Characteristics of wood and porous material are identical, but not all. "Breath" as they are totally different. The tree has a longitudinal fibrous structure. Couples with difficulty comes in the thick wood, and comes out of it pretty easily. He pushes in the direction perpendicular to the fibers and rapidly excreted through the ends of logs. The tree does not stop moisture, does not dampen, so the ends of wooden beams covered with never close. Otherwise diverted moisture nowhere to go, and the ends of the beams quickly rot. Vapor permeability of aerated concrete has a constant value in all directions. Aerated concrete is much faster than wood absorbs moisture from the warm room and pushes it out. Water to freely went outside to build a fence right of the blocks. In this characterization of porous concrete has the advantage, but only if all done technically correct.