Aerated concrete what and how?

Aerated concrete is known in the construction industry for over a hundred years. The first attempts to introduce water vapor under high pressure to the mixture of cement has already carried out in 1877 Zernikov. Unfortunately, the material obtained by him proved to be very volatile. Only three years later was able to fine-tune this technology so that it can be practically used in construction. The breakthrough, however, brought only a patent obtained by Hoffmann, E. 1889. The inventor has used the reaction of dilute hydrochloric acid with lime powder to get a mortar cement and calcium containing air bubbles. JW Aylsworth and FA Dyer went a slightly different route and used a reaction of calcium with water and a small amount of metal powder. Its patented technology, scientists in 1914. Work on improving the manufacturing process of cellular concrete was halted during the First World War. After its completion in the study actively engaged Swedes and Germans. It is in these countries in the 30s last century created the first plants producing concrete with air bubbles (cells). For the Polish technology that had established in 1954 with the launch of a factory in Solec Kujawski.

Building Technologies

There are at least a dozen construction technologies, on which you can raise a family house. Choosing the right subject is usually from their wallets. As a rule, their cheaper technology, this poses more problems with the subsequent operation. On the other hand, even the expensive materials do not give a full guarantee of trouble-free operation of the building for several decades. Reasonable compromise between price and quality seems to be building on cellular concrete. This type of construction material is obtained as a result of the introduction of gas under sufficient pressure to mix cement. Thanks in concrete formed homogeneous mikrootwory. This material, invented over 130 years ago, is characterized by good thermal insulation properties. It is fire-resistant, and resistant to temperature fluctuations. Its advantages include ease of processing it. Cellular concrete blocks can be freely saw or grind, giving them shape. The major disadvantages of this technology include relatively high moisture absorption and low compressive strength. Erecting structures reinforced the need to ensure adequate protection of metal parts, which are within blocks of cellular concrete may corrode.

Construction of concrete blocks

Concrete blocks are one of the most popular materials used to build the foundation walls in detached houses and other purposes of construction of small structures. Their main advantages are ease of use and relatively low price. Unfortunately, this solution has its disadvantages, among which the most serious of the limited strength of the structure. To a large extent it depends, however, from the raw material from which bricks were made. Another problem is the relatively poor thermal insulation. Despite the fact that blocks are devoid of holes, relatively easily dissipates heat. Thus, built from this material require additional wall insulation. On the market there are blocks of different sizes. The most commonly used dimensions are 14x24x38 cm. Somewhat less frequently used blocks, whose height is 12 cm. The difference in price between them are relatively small, "lower" but are generally characterized by greater strength. Traditionally, as a binder for the bricks used in cement mortar, a mixture of cement, lime and sand. They are durable and relatively inexpensive to prepare.