ТЕХНИКО-ЭКОНОМИЧЕСКИЕ АСПЕКТЫ ЗАМЕНЫ ПРИРОДНОГО ЩЕБНЯ НА ВТОРИЧНЫЙ ПРИ ПРОИЗВОДСТВЕ БЕТОНА

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.