CONCRETE MIXTURE Russian patent published in 2013 - IPC C04B28/04 C04B14/06 C04B24/16 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to composition of a concrete mixture and mortar and can be used in construction when making prefrabricated concrete or reinforced concrete articles and structures. The concrete mixture contains the following, wt %: portland cement 30.83-33.94; finely ground quartz sand with silicon dioxide SiO₂ content higher than 94%, in which content of fine particles with average diameter smaller than 3.9 mcm is higher than 50% 1.78-3.55, river sand with fineness modulus of 1.9 55.5-56.00, Petrolafs additive 0.28-0.42, water - the balance.

EFFECT: high strength of concrete aged 12-24 hours, high bending and compression strength of concrete aged 28 days.

1 ex, 1 tbl