HIGH-STRENGTH CONCRETE Russian patent published in 2016 - IPC C04B28/04 C04B22/08 C04B111/27 

FIELD: construction.

SUBSTANCE: high-strength concrete, produced from the mixture, containing portland cement, sand, crushed stone, water and complex additive, consisting of liquid sodium glass with the density ρ=1.45 g/cm³, hydrogen index pH=12.0 and iron hydroxide sol (III) Fe(OH)₃, with the density ρ=1.021 g/cm³ and hydrogen index pH=4.5-5.5, at the following ratio of components, wt %: 84.00-85.50 and 14.50-16.00 accordingly, at the following ratio of the mixture components, wt %: portland cement 19.50-26.65; sand with the modulus of fineness Mf=2.1 21.80-24.70; crushed stone of fraction 5-10 mm 42.40-44.50; specified additive 1.75-2.25; water 7.40-9.05.

EFFECT: reduced water absorption of concrete.

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