FIELD: construction.
SUBSTANCE: invention relates to manufacturing fine-grained concretes which can be used for the erection of greenhouses and other structures, mainly for agricultural purposes. The raw material mixture for tmanufacturing fine-grained concrete contains, by wt %: Portland cement 28.0-30.0; ash from coal combustion 55.3-58.5; superplasticizer "C-3" 0.5-0.7; silicate glass ground and sieved through sieve №063 9.0-12.0; electrocorundum sieved through sieve №5 2.0-4.0, with the water-cement ratio of 0.4-0.5.
EFFECT: increasing the concrete strength.
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