Using Glass Wastes as Partial Replacement of Coarse Aggregates in Concrete

Abstract

Concrete industry is one of the largest consumers of natural resources due to its consumption of huge volumes of natural aggregates, which represents around 70% - 80% of the concrete volume. The environmental and economic concern are the biggest challenge that concrete industry is facing. In this research, the issues of environmental and economic concern are addressed by using waste glass as partial replacement of coarse aggregates in concrete. The waste glass was used to replace the coarse aggregates using replacement ratios of 10%, 20%, and 30% by weight. The concrete specimens were tested for compressive strength, splitting tensile strength and flexural strength. Compression tests were carried out at 7 days and 28 days of age while the two other tests were carried out at 28-day age only. The results obtained were compared with those of normal concrete. The results concluded that there is feasibility in using glass wastes in concrete as partial replacement of coarse aggregates.