FIELD: construction materials.
SUBSTANCE: composition of binders based on high-calcium fly ash, used in the manufacture of mortars, concretes and unburned flyash aggregate. The binder includes high-calcium fly ash, microsilica MKU-85 and calcium salt. As a calcium salt, it contains calcium nitrate and additionally magnesium chloride in the following ratio, wt.% (dry matter): high-calcium fly ash - 60-65; microsilica MKU-85 - 24.5-35.5; calcium nitrate - 4.5-6; magnesium chloride - 1.5-3.
EFFECT: enhancing concrete qualities.
1 cl, 3 dwg, 2 tbl
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