Compressive Strength And Water Absorption Of Mortar Using Windscreen Glass Waste Powder (Wgwp) As A Sustainable Sand Replacement

Abstract

In many developing countries today, there is a growing shortage of landfill sites for waste disposal. To address this issue and reduce environmental pollution, the reuse of glass waste as a substitute for sand in concrete production has been proposed. This study examines the effects of incorporating windscreen glass waste powder (WGWP) as a partial replacement for sand in mortar mixtures, focusing on compressive strength and water absorption performance. The mortar mix was designed with a ratio of 1:3 (cement to sand) and a water-cement ratio of 0.5. Sand was partially replaced with WGWP at levels of 10%, 20%, and 30%, and the specimens were tested after 7, 14, and 28 days of curing. The results showed that mortars containing WGWP exhibited improved performance compared to the control sample. Specifically, the addition of 30% WGWP led to enhanced compressive strength and reduced water absorption, indicating the potential of recycled windscreen glass as a viable alternative to natural sand in mortar production.