FIELD: chemistry.
SUBSTANCE: invention relates to compositions of a concrete mixture and can be used in construction when making high-quality prefrabricated concrete or reinforced concrete articles and structures. The concrete mixture contains the following, wt %: portland cement containing more than 16% grains with average diameter of less than 3 mcm, containing grinding intensifier InCem E500 in amount of 0.0365% of the mass of portland cement 15.28-16.49; said with fineness modulus of 2.1 29.67-29.95; crushed stone of the fraction 5-20 48.53-48.64; Sika Viscocrete 20 Gold additive 0.061-0.066; water - the balance.
EFFECT: high strength of concrete aged 10 to 12 hours, which enables to lower the temperature of isothermic ageing of the concrete during steam curing when making prefabricated concrete or reinforced concrete.
1 ex, 2 tbl
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Authors
Dates
2014-04-27—Published
2012-06-22—Filed