METHOD OF PREPARING CONCRETE MIX Russian patent published in 1997 - IPC

FIELD: building materials industry, more particularly manufacture of structures from pyrolyzed filler based light concrete. SUBSTANCE: method of preparing concrete mix comprising mixing binder, fillers, flooding water with organic plasticizer additive, maintaining mixture for time period which corresponds to duration of 1st structure formation process, mechanical activation at which additional component is added to concrete mix till it achieves minimum viscosity from beginning of mechanical activation. New feature of the present convention, porous filler as additional component in amount from 4.3 to 5.2 wt % with its residual moisture content of least 1.8 % is added to concrete mix to be flooded. Polyvinyl acetate dispersion is added to organic plasticizer with flooding water in amount of 0.05-1 % by weight of binder with flooding water. EFFECT: shorter heat treatment, better placability of mix and improved quality of concrete. 3 cl, 2 tbl