BINDER AND METHOD OF ITS PREPARATION FOR PRODUCTION OF DECORATIVE CONCRETE Russian patent published in 2012 - IPC C04B7/153 

FIELD: construction.

SUBSTANCE: in the method to prepare a binder for production of a decorative concrete including grinding, mixing, grinding of the binder, slag from melting of ferrochromium is ground to the size of 700-800 m²/kg, a hardening promoting agent - wastes of iron ores dressing with inclusions of mineral garnets in amount of 10-20% are ground to the size of 500-700 m²/kg, mixed with blast furnace pelleted slag, calcium sulfate dihydrate at the following ratio of components, wt %: blast furnace pelleted slag 28-39; calcium sulfate dihydrate 3-5; wastes of ores dressing 5-12; slag from melting of ferrochromium - balance, additionally ground to the size of 400-450 m²/kg. The binder for production of decorative concrete is characterised by the fact that it is produced by the above method.

EFFECT: higher stability of a decorative colour without reduction of strength and frost resistance of concrete on the specified binder.

2 cl, 1 ex, 2 tbl