Performance of Recycled E-Waste as Aggregates in Green Concrete

This study is focused to improve strength and durability properties of green concrete with E-waste as fine (10%, 20% and 30%) and coarse aggregates (5%, 10% and 15%) replacement in fibre reinforced green concrete with 30% of ground granulated blast furnace slag (GGBS) for the replacement of cement. Since the reuse of electronic waste and the waste industrial by-product GGBS was used in this study, this also aims to design a green concrete with E-waste. The findings from this study show that E-waste as fine aggregate attained lesser compressive strength, whereas E-waste as coarse aggregate replacement exhibited similar compressive strength compared to control concrete. The results of splitting tensile strength and flexural strength of E-waste as fine and coarse aggregate replacement mixtures were superior to that of normal concrete. The chloride ion penetration of control concrete was low, whereas for E-waste concrete mixtures moderate chloride ion penetration was observed. The overall performance of E-waste as fine and coarse aggregates replacement in compressive strength, splitting tensile strength, flexural strength and chloride ion penetration was due to the combined pozzolanic action of GGBS, increase in the tensile behaviour due to the presence of steel fibres and good bonding of E-waste aggregates.