HIGH-STRENGTH CONCRETE Russian patent published in 2011 - IPC C04B28/04 C04B22/06 C04B111/20 

FIELD: construction.

SUBSTANCE: high-strength concrete is made of a mixture of raw materials, which contains portland cement, sand, crushed stone, water and a complex additive represented by ferric hydroxide sol (III) with density of 1.021 g/cm³, hydrogen index of 4.5-5.5 and microsilica, at the following ratio of additive components, in wt %: 45.50-46.00 and 54.00-54.50, accordingly, at the following ratio of raw materials mixture components, wt %: portland cement 20.60-27.40, sand 21.80-24.70, crushed stone 42.40-44.50, the specified additive 0.70-0.90, water 7.70-9.30.

EFFECT: increased density of concrete, reduced water absorption.

9 dwg, 1 tbl