BINDER Russian patent published in 2009 - IPC C04B7/147 

FIELD: construction.

SUBSTANCE: invention may be used in production of concrete and reinforced concrete items, construction mortars and dry construction mixes. Binder produced by grinding of mixture that contains the following components, wt %: blast-furnace slag 38-50; calcium sulfate dehydrate 4-7; mountain sand of the following composition, wt %: SiO₂ 34.1-39.9; Al₂O₃+TiO₂ 9.8-11.0; FeO+Fe₂O₃ 12.8-36.1; Na₂O+K₂O 1.3-3.2; CaO 11.3-13.7; MgO 4.2-5.7; MnO 0.3-0.55; P₂O₅ 1.7-2.2; weight loss of burning 8.5-15.0, containing 10-20% minerals of garnets, 3-8; highly basic slag from melting of metal magnesium - the rest, besides, mixture grinding is done down to specific surface of 470-480 m²/kg.

EFFECT: improved strength and frost resistance of binder.

2 tbl