| 摘要 |
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 üpack=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 üpack=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 üpack=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 ü=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. ^ 1 ex, 1 tbl |
