Cellular concrete. Foam or aerated? UDK Gazbeton - blocks of autoclaved aerated concrete

cellular concrete

Cellular concrete in the design and construction of private homes before the developer is often a problem of choosing between the two construction-insulating materials - aerated concrete and foam concrete blocks. This task is complicated by a certain confusion in the terminology used by builders, as well as ignorance of consumers (well, by the way, of course) in matters of production of cellular materials. On what to choose? Try to understand. In reality, and aerated foam are lightweight cellular concrete species - artificial stone material, mineral-based binder with uniformly distributed pores by volume. Hundreds of thousands of tiny cells filled with air, give this material an extremely high thermal insulation properties, allowing him to build from single-layer walling, fully meets the requirements of DBN in 2.6-31: 2006 "Thermal іzolyatsіya budіvel" with a relatively small thickness of the walls. Differences between the foam and gas concretes due to differences in manufacturing technology, which in turn determine the quality of the final product. Among the manufacturers of aerated concrete products deserves special attention Dnepropetrovsk company LLC "LEG TO" - manufactures products under the brand name UDK Gazbeton. That is why the following analysis will be carried out by the example of the brand. UDK Gazbeton - manufactured on the equipment «Masa-Henke» - is a guarantee of German quality, but its production has the technical characteristics superior to that of competitors. Blocks UDK Gazbeton produced in accordance with TU U-V.2.7. 26.6-33384219-001 2009, the requirements of which are fully compliant with existing in our country V.2.7-1372008 DSTU B "Blocks іz nіzdryuvatogo concrete stіnovі drіbnі." The company "LEG TO" always strives to ensure that its products fully comply with the current standards, so the quality brand products UDK Gazbeton is at a consistently high level, which provides a rigid functional inspection and periodic tests in a laboratory plant. Raw materials for the production of concrete blocks UDK Gazbeton used only natural organic raw materials: lime, water, small amounts of cement and silica component (quartz sand). To form the pores in the mixture obtained by mixing all the components Rx, a small amount of aluminum gasifier. As is known, aluminum is completely harmless to health, therefore, it is made into cookware, food packaging, etc. As a result of the reaction of aluminum with lime produced "artificial stone", imbued with thousands of tiny pores, - an environmentally friendly building material that does not emit any harmful substances and is absolutely safe for human health. Modern manufacturing techniques provide a homogenous aerated structure, and therefore the properties of blocks of this material are exactly the same in both the vertical and horizontal direction. In the production of foam used a similar formula (Portland cement, sand, water), but the function of blowing agent perform different types of foaming agents. The porous structure is obtained by mixing a concrete with a pre-prepared foam, either by direct addition of foaming agent into the mixture. The production process Autoclave treatment material is an important technological step in the production of concrete products. During autoclaving shaped concrete blocks within 12 hours are subjected to a heat treatment in an environment of saturated steam at a temperature 195ºS and a pressure of 12 atm. This procedure substantially improves the strength of the material, as well as several times reduces shrinkage, which in turn reduces the risk of shrinkage cracks. This technology allows you to receive the same quality of material at any point of the finished product and from batch to batch, which is almost unattainable in products from foam, because the process of hardening occurs in vivo, high-temperature autoclave treatment is not applied, so the material aerated concrete is inferior in strength and some other characteristics. In particular, the most common brands of products in the density of autoclaved aerated concrete - D400 and D500, it is structurally insulating material having sufficient strength to build load-bearing walls, while the non-autoclave concrete produced with brands density D600 and higher, with the yield both in strength and in the heat-shielding function. In addition, for aerated concrete is characterized by shrinkage (deformation) when dry. As a result of shrinkage processes Walling, built of foam concrete, cracks can form, sometimes very significant. Aerated, last autoclaving, deprived of this disadvantage. Features Quality of packaging Packaging of building materials determines the degree of reliability of their protection from the negative effects of precipitation, which is of fundamental importance for long-term storage in an open construction site. Strong shrink film, which is hermetically packaged products UDK Gazbeton, prevents moisture concrete blocks under adverse weather conditions. Freed packaging film performs another function: it is successfully used to protect other building materials and unfinished frame structures from rain and snow. Foam concrete blocks can be packed in flimsy polyethylene or can be delivered without any packaging, which ultimately negatively affects the state of the construction material, and often leads to chipping and moisture of the product. Geometric accuracy of blocks = saving + heat insulation in the building geometrical dimensions of products UDK Gazbeton maintained with very high accuracy. This makes it possible to stack blocks in a conventional masonry mortars, and adhesive solution UDK TBM thin layer of masonry, which allows to arrange the seams with thickness of 2-3 mm. This in contrast to the masonry masonry cement-sand mortar allows to erect a wall of a homogeneous, without "cold bridges" that significantly reduce the thermal resistance of the building envelope. The integrated approach of the company "UD K" involves not only the production of quality products from aerated concrete, but also the supply of additional products and tools that perfectly matches the blocks UDK Gazbeton, as well as professional logistics solutions and expert advice of professionals, thereby reducing the duration of the construction process and guarantees the highest quality of construction.

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