FOAM CONCRETE MIX Russian patent published in 2000 - IPC

FIELD: manufacture of building materials; applicable in preparation of concrete mixes for manufacture of concrete articles and monolithic objects. SUBSTANCE: foam concrete mix contains mineral binder, silicon dioxide component, foaming agent, water and chemical additive in form of wastes of grain production -ground husk treated with aqueous solution of NaOH of 10-30% concentration in ratio of 1(6-10) at temperature of 80-90 C for 10-14 h. Additive amounts to 0.4-0.8% of foaming agent weight. Mineral binder is used in form of one of substances of the following group including: cement, calc spar, lime- belite. Foaming agent is used in form of rosin size, alkalarylsulfonates or alkyldimethylamines, or synthetic detergents. EFFECT: higher foam expansion ratio and stability of porous cement paste, reduced density and higher strength of foam concrete. 3 cl, 4 tbl