CLINKERLESS CEMENT Russian patent published in 2011 - IPC C04B7/147 C04B7/153 

FIELD: construction.

SUBSTANCE: cement produced by grinding of a mixture containing the following components, wt %: blast furnace slag - 40-50; calcium sulfate dihydrate - 4-6; wastes of iron ores enrichment 3-6; sodium or potassium, or ammonium carbonates or their mixture - 3-8; steel smelting slag - electric steel smelting, open-hearth or converter one - balance. Besides, the mixture is ground down to specific surface of 700 m²/kg.

EFFECT: increased strength and frost resistance of cement.

1 ex, 2 tbl