Use of recycled fine aggregates for Control Low Strength Materials (CLSMs) production

Abstract

It is known that 50% of recycled aggregate is fine aggregate, however its use is still limited. In this research work the use of recycled fine aggregates for Controlled Low Strength Materials (CLSMs) production was analysed. Self-compacting and flowable CLSM material was composed of cement, fine aggregates, water and an air-entrained admixture. Adequate mix proportions of CLSM material produced with recycled fine aggregates were validated according to the minimum requirements of ASTM and the results obtained by CLSM produced with natural fine aggregates. Bleeding and penetration resistance for fresh state and density, porosity and absorption in hardened strength of optimum mix proportions of all CLSM mixtures with recycled aggregates were also validated.