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

FIELD: chemistry.

SUBSTANCE: invention relates to high-strength concrete and can be used in making articles in civil and industrial construction, monolithic construction, concreting densely reinforced structures, as well as for erection of special-purpose structures for critical structures exposed to harsh external effects. The high-strength concrete is obtained from a crude mixture containing portland cement, sand, crushed rock, water and a complex additive having the following composition, in wt %: iron (III) hydroxide sol with density 1.021 g/cm³, with pH 4.5-5.5 25.50-26.00, plasticiser TMID-4 74.00-74.50, with the following ratio of components of the crude mixture in wt %: portland cement 20.60-27.40; sand 21.80-24.70; crushed rock 41.60-43.40, said additive 1.50-2.00; water 7.70-9.30.

EFFECT: higher water impermeability of the concrete.

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