RAW MIXTURE FOR MAKING HEAT-RESISTANT CONCRETE Russian patent published in 2009 - IPC C04B28/26 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to production of construction materials and can be used in construction industry when making objects and structures from heat-resistant concrete. The raw mixture for making heat-resistant concrete contains, wt %: 36.83 to 64.51 filler - siftings from crushing diabasic lumps on crushed rock with particle size from 0 to 5 mm with ρ_pack=1590 kg/m³ and moisture of 1 to 2% with the following ratio of fractions, %: 5 mm fraction - 55.0, 2.5 mm fraction - 26.0, 1.25 mm fraction - 6.7, 0.63 mm fraction 1.7, 0.315 mm fraction - 3.3, 0.14 mm fraction - 5, less than 0.14 mm fraction - 2.3, and binder, consisting of field I flue ash with ρ_pack=800-850 kg/m³ and sieve No.008 residue - 6.7%, 20.41 to 40.72 and liquid glass, made from multitonnage ferrosilicon production wastes from the ferro-alloy - microsilica Bratsk factory with ρ_pack=215-220 kg/m³ and containing fine grained crystalline impurities in form of carborundum and graphite in amount of 8 to 10%, with silica modulus n=1-1.5 and density ρ=1.33-1.34 g/cm, 13.98 to 27.17.

EFFECT: increased heat resistance of concrete with simplification of the production process, reduced cost of final product.

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