FIELD: construction materials.
SUBSTANCE: invention relates to construction materials, in particular to self-compacting concrete mixtures, and can be used in making concrete articles, structures and structures using man-made material of concrete scrap from destroyed buildings. Self-compacting concrete mixture based on crushed concrete contains the following components at the following ratio, wt. %: portland cement 21.0-25.5, quartz sand 28.2-31.9, broken concrete crushed stone 23.4-29.5, polycarboxylate superplasticiser 0.05-0.17, expanding additive 2.4-4.3, microfiller 4.6-8.3, water – balance.
EFFECT: creation of self-compacting concrete mixture with low shrinkage and high modulus of elasticity; in addition, the proposed solution allows to expand the range of concrete mixtures increasing the efficiency of the process of recycling construction wastes.
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