HIGH-STRENGTH CONCRETE Russian patent published in 2016 - IPC C04B28/04 C04B111/20 

FIELD: construction.

SUBSTANCE: high-strength concrete from a mix containing portland cement, sand, crushed stone, water and additive, where the mix contains sand with the fineness modulus of 2.1, crushed stone of a fraction of 5-10 mm, and the additive consists of liquid sodium glass with the density ρ=1.45 g/cm³, hydrogen exponent pH=12 and metasilicic acid sol H₂SiO₃ with the density ρ=1.014 g/cm³, hydrogen exponent pH=5-6 at the following ratio of components, wt %: specified liquid glass 17.50-18.00, specified sol 82.00-82.50, at the following ratio of raw mix components, wt %: portland cement 19.95-26.85, specified sand 21.80-24.70, specified crushed stone 42.40-44.50, specified additive 2.25-2.75, water 6.70-8.10.

EFFECT: increased compressive strength of concrete.

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