A review on recycled aggregate concretes (RACs)

Abstract

Abstract The recycling of waste concrete materials in the civil constructions is a critical issue like recycled aggregate concrete is weakly adhered mortar having higher porosity and water absorption, forming weak interfacial transition zones, causing an adverse impact on the mechanical properties and durability. But the use of pozzolanic materials as supplementary cementitious materials in recycled aggregate concrete, is more effective and feasible method of improving the overall mechanical and durability properties of recycled aggregate concrete. This paper reviews various methods for improving the mechanical and durability properties of RACs. Despite the fact that many research studies have been conducted in this area, there are significant gaps in the current state of knowledge on the performance of RACs. As a result, this paper identifies the gaps in current knowledge on improving mechanical and durability properties of RAC and provides recommendations for future research.