RAW MIXTURE FOR PREPARATION OF A FOAMED CONCRETE Russian patent published in 2004 - IPC

FIELD: building materials industry; production of cellular foamed concrete. SUBSTANCE: the invention is dealt with production of cellular building materials and may be used for production of the heat-insulating-constructional and heat insulating materials at manufacturing elements of buildings and structures in industrial and civil engineering. Technical result is a decrease of shrinkage strains, an opportunity to produce the heat insulating materials with the stable design densities in the range of 300 up to 800 kg / m cu, an opportunity of utilization of soluble silicate from microsilicon earth with silica module from 2 up to 4, an opportunity of utilization of microsilicon earth - a production waste of crystalline silicium, price reduction of production. The raw mixture for preparation of the foamed concrete, including a weak soda glass, a siliceous component, a frothing agent, a hardener - sodium fluosilicate and water, contains a weak soda glass from microsilicon earth with silica module from 2 up to 4 and a density 1.35 - 1.45 g / cm cu. In the capacity of a siliceous component they use a production waste of crystalline silicium - microsilicon earth; in the capacity of a frothing agent - a technical soap "Taiga" with addition of a gypsum plaster at the following ratio of components, (in mass %): the indicated soluble silicate 59.52 - 68.44, microsilicon earth 17.86 - 20.53, a technical soap "Taiga" - 0.10 - 0.71, sodium fluosilicate - 5.95 - 6.84, a gypsum plaster - 1.79 - 2.05, water - 2.04 - 14.17. EFFECT: decrease of shrinkage strains, production of the heat insulating materials with the stable design densities, utilization of soluble silicate and waste of crystalline silicium production, price reduction of production. 2 tbl