Study of enrichment of sand for construction works with screening of rocks crushing

Abstract

The article formulates the problem of considering screenings of stone crushing as a component factor in the formation of the structure of conglomerate building composites. In this context, data are presented on the study of screenings from the Soksky, Ivanteevsky and Orsky quarries for the enrichment of the Volga sands for construction work. At the same time, the influence on the strength of the mortar matrix of concrete of various combinations of screenings with river quartz Volga sand is considered. The conducted studies have shown the effectiveness of the use of stone crushing screenings as a fine aggregate in the production of reinforced concrete products. The use of crushed stone screenings is a justified technological method and allows improving the strength characteristics of the materials obtained on their basis. At the same time, this work requires additional scientific research and development of optimal ratios of aggregates and identification of the effect of various additives on their characteristics.