COMPLEX ADDITIVE AND RAW MIXTURE FOR PREPARING CONCRETE Russian patent published in 2007 - IPC C04B24/18 C04B28/02 C04B103/14 C04B111/20 

FIELD: building industry and materials.

SUBSTANCE: invention relates to a complex additive used in producing concrete and to a raw mixture used in manufacturing building constructions. Complex additive for producing concrete containing technical lignosulfonates and caustic contains caustic concentrate obtained after boiling foliate monosulfite cellulose in ammonium or sodium base as a caustic in the following ratio of components, wt.-%: technical lignosulfonates, 85-95, and indicated caustic concentrate, 5-15. The raw mixture used for manufacturing concrete comprises components in the following ratio, wt.-%; binding agent, 16.82-16.85; small filling agent, 19.44-19.47; large filling agent, 56.67-56.8; indicated complex additive, 0.04204-0.04212, and water, the balance. Invention provides enhancing strength of concrete and accelerating time for its hardening.

EFFECT: improved and valuable technical properties of concrete and raw mixture.

3 cl, 1 tbl