CONCRETE MIXTURE FOR PRODUCING HEAT-RESISTANT FIRE-RETARDANT COATING Russian patent published in 2015 - IPC C04B28/04 C04B41/65 

FIELD: construction.

SUBSTANCE: concrete mixture for producing heat-resistant fire-retardant coating comprises the components in the following amount (in kg per 1 m³ of concrete mixture): artificial cement - 400; ground shungite - 50; asbestos - 15; granulated blast-furnace slag - 930; water - 295. At that, the granulated blast-furnace slag has fineness modulus M_fn = 2.98 and bulk density of 500 kg/m³, and shungite has optimum dispersion: fineness modulus M_fn = 1.43, specific surface S_sp = 320 m²/kg.

EFFECT: development of composition of concrete mixture for producing the fire-retardant coating of high thermal stability, having the improved physical and mechanical properties and allowing to improve the degree of fire resistance of reinforced concrete structures.

3 tbl