| 摘要 |
FIELD: construction. ^ SUBSTANCE: binder produced by grinding of mixture that contains the following components, wt %: blast-furnace slag 40-45; calcium sulfate dihydrate 4-9; mountain sand of the following composition, wt %: CaO 11.3-13.7; MgO 4.2-5.7; Al2O3 9.8-11.0; SiO2 34.1-39.9; FeO 12.8-26; MnO 0.3-0.55; SO3 1.7-3.2; Na2O+K2O 1.3-3.2, containing 10-20% minerals of garnets, 4-9; slag from melting of ferrochromium - the rest, besides grinding of mixture is carried out down to specific surface of 450 m2/kg. ^ EFFECT: higher strength, frost resistance and moisture resistance of binder. ^ 2 tbl |
