Replacement of aggregates through waste foundry sand and demolished concrete: A review

Both industrialization as well as urbanization are occurring at an accelerating rate, that has resulted in over usage of naturally available assets like river, sands and (grit) gravels, which is creating sustainability viable problems. It is now essential to explore various alternative solutions to the basic components of cementitious materials i.e. sand, aggregates present in concrete. Such potential material that could be utilized in place of naturally occurring sand for concrete is a foundry sand or waste foundry sand, (a residue of both non-ferrous as well as ferrous metal forming industries) along with demolition debris and waste emerged from the demolished building. The discussion of fundamental concrete qualities, such as compressive strength, flexural strength, workability, mechanical and durability property etc., related to various combinations of recycled concrete aggregate and waste foundry sand. Furthermore, this review suggested the combination of fiber reinforcement and pozzolanic materials along with Waste foundry sand that would be beneficial in future.