HIGHT-STRENTH CONCRETE Russian patent published in 2008 - IPC C04B40/00 C04B22/08 C04B111/20 C04B111/27 

FIELD: chemistry.

SUBSTANCE: invention relates to the composition of high-strength concrete and can be used for production of material in civilian and industrial construction as well as in construction of purpose made buildings. The high-strength concrete contains a complex mixture of iron hydroxide sol (III) Fe(OH)₃ with density p=1.021 g/cm³, pH=4.0...5.0 and aluminium sulfate Al₂(SO₄)₃ with the following proportion of the components, weight ratio, %: iron hydroxide sol (III) Fe(OH)₃ with density p=1.021 gr/cm³, pH=4.0...5.0 99.83-99.87, aluminium sulfate Al₂(SO₄)₃ 0.13-0.17, and it also contains the components in the following proportion, weight ratio %: porland cement 22.48-28.61, sand 23.00-25.60, chip 36.30-39.00, before mentioned mixture 0.69-0.92, water 11.40-12.00.

EFFECT: decrease of shrinkage and water absorption, enhancement of waterproofing capacity of concrete.

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