TECHNICAL AND ECONOMIC ASPECTS OF SUBSTITUTION OF NATURAL CRUSHED BY SECONDARY CRUSHED IN THE PRODUCTION OF CONCRETE

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Authors

Y.Y. Kuryatnikov

Abstract

With the use of secondary crushed stone of fraction 5–20 mm and secondary crushed stone-sand mixture of fraction 0–60 mm, obtained during processing of concrete scrap, concrete compositions of strength classes B7.5–B22.5 have been developed. Replacing natural crushed stone with a secondary one gives a noticeable economic effect when using it.

Keywords

secondary crushed stone, secondary crushed stone-sand mixture, concrete scrap, heavy concrete, processing of substandard products, improving the ecological situation.