FIELD: building materials.
SUBSTANCE: invention relates to building materials, in particular to fine-grained self-compacting concrete mixtures, and can be used for monolithic concreting and repair work, where the technology requires increased mixture mobility, high early and design strength of fine-grained concrete. The fine-grained self-compacting concrete mixture contains, wt.%: Portland cement without additives of the CEM I 42.5B class with a normal density of 25-26% 27.0-27.1, fine natural sand with a fineness modulus of 1.8 58.6-61.0, active mineral additive - a powder obtained from polymineral clay after heat treatment at a temperature of 700 ° C for 2 hours and subsequent grinding to a specific surface of 7800 cm2/g 3.0-4.8, powder hyperplasticizer based on polycarboxylate ether brand "Melflux 5581 F "0.3, water - the rest.
EFFECT: increasing the compressive strength of fine-grained concrete.
1 cl, 2 tbl
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