FIELD: chemistry.
SUBSTANCE: invention relates to industry of building materials, in particular, to production of fine-grained concretes. Raw material mixture for production of fine-grained concrete, contains, wt %: Portland cement 22.0-24.0; ashes from lignite and coal burning 71.9-73,3; asbestos of grade 6 3.0-4.0; super-plasticiser C-3 0.7-1.1, with water-cement ratio 0.45-0.5.
EFFECT: increase of concrete strength with reduction of cement consumption.
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