FIELD: construction.
SUBSTANCE: fine-grained concrete contains Portland cement, glauconite sand and water. Filler used is crushed glauconite sand with specific surface of Ssp=350 m2/kg. Additive used is superplasticiser C-3 at the following ratio of components, wt %: Portland cement 18.0-19.0; Glauconite sand 68.1-68.9; Filler 1.0-2.0; Superplasticiser C-3 0.1-0.2; Water 11.0-11.7.
EFFECT: increased strength during compression and bending and reduced water absorption and shrinkage of fine-grained concrete from raw mix.
2 cl, 2 tbl
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