Properties of concrete incorporating fine recycled aggregates from crushed concrete wastes

Fine recycled aggregates produced by crushing concrete wastes can be used as a replacement for fine natural aggregates for manufacturing concrete. Two methods were adopted for production of fine recycled aggregates from crushed concrete wastes: first, produces coarse as well as fine aggregates (R1); second, produces only fine aggregate (R2). Test results demonstrate that the fine recycled aggregate replacement ratio is an important factor affecting the physical, mechanical and durability of resulting concrete. Furthermore, concrete specimens containing R2 have a superior quality than concrete specimens containing same amount of R1.