CONCRETE MIXTURE Russian patent published in 2014 - IPC C04B28/04 C04B111/20 

FIELD: construction.

SUBSTANCE: concrete mixture comprises, wt %: Portland cement 25.0-27.0; characterized by particle-size composition, wt %: particles larger than 0.63 mm, but smaller than 1 mm - 0.2; larger than 0.315 mm, but smaller than 0.63 mm - 4.8; larger than 0.14 mm, but smaller than 0.315 mm - 62; smaller than 0.14 mm - 33 ash and slag filler 15.0-19.0; slag pumice with density of 0.4-1.6 g/cm³ crushed and sieved through mesh No. 10 - 30.3-34.3; aluminium powder 0.1-0.2; superplasticizing admixture C-3 - 0.5-0.6; water - 23.0-25.0.

EFFECT: increase of concrete strength.

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