Impact of Glass Powder and Recycled Coarse Aggregate as a Partial Replacement of Fine and Coarse Aggregate

Mohammed Jasar NT, Varsha Shaji

Abstract: The Fine and coarse aggregates are the main ingredients of concrete as the filler materials. As coarse aggregates are non- renewable resources, scarcities of these materials have been increased in recent years. Therefore, it is essential to search for other materials, which can be used as an alternative to fine and coarse aggregate. Now days, waste of glasses are been increasing, and the powder form of waste glass(GP) can be used as a partial replacement for the fine aggregates(FA), which can cause increase in the strength of concrete due to the proper alkali aggregate reaction up to 30% replacement. Recycled coarse aggregates (RCA) can be used as coarse aggregate (CA) partially in concrete, which reduces the strength of concrete with variation in various percentage of RCA. The combination of GP and RCA as a partial replacement of cement and coarse aggregates are used in concrete with 30% of GP and varying the percentage of RCA as 10%, 20%, 30%, 40% & 50%. Compressive strength & split tensile strength of newly prepared specimens are compared with conventional concrete. Workability test, acid test & water absorption tests are also conducted on the hardened concrete and compared with the conventional concrete. This new technology will provide new solution for the disposal glass sheet waste as well as the demolished waste of concrete.

Keywords: Glass powder, Recycled coarse aggregate, Fine aggregate, coarse aggregate, Glass powder concrete, Modified concrete, Compressive strength, Split tensile strength.