In order to make lightweight concrete, binding components are applied – lime, clay, gypsum and corresponding aggregates – sawdust, resin, reed. When building low-rise buildings, it is light concrete varieties that are simply an indispensable material.
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The lung concrete group includes opilk concrete and slag concrete. The slag concrete is made of fuel or metallurgical slag with the addition of one of the binding elements. The material has high heat insulation. With the right technique of using the wall from this material, decades can serve. More “strong” is the so-called fuel slag. Such a slag from brown coal is not as high quality, since there are unstable impurities in its content.
Material must be clean enough, without impurities of coal, earth, ash or clay. To clean the slag from salts, it should be about the year in the open space. The granulometric composition will affect the density of the slag concrete.
Another variety of lightweight concrete is opilk concrete. This material is made of wood waste. In its content there is an organic aggregator, for this reason the opilk concrete will need additional moisture protection. In the opilk concrete cement is the binding components.