PERFORMANCE ASSESSMENT AND STATISTICAL ANALYSIS OF CONCRETE MIXES INCORPORATING GLASS WASTE POWDER

Worldwide, annual glass waste production surpasses 200 million tonnes, urging exploration of sustainable reuse avenues. This study evaluates the incorporation of waste glass powder (WGP) into concrete as a partial replacement for fine aggregate. Thirty concrete mixes, varying water-cement ratios and WGP levels, underwent comprehensive analysis. Findings reveal that as WGP percentage in sand increases, the slump of concrete rises marginally until reaching maximum glass powder replacement, with workability remaining within the 50 to 100 mm range. At a 10% replacement level, early and later age strength minimally impacts compressive strength. WGP's workability and strength hinge on particle geometry, indicating increased concrete strength when mixed with WGP featuring higher surface area and improved cement paste bonding. To enhance solid waste management, conserve sand, and bolster sustainability, WGP can replace up to 10% of sand weight in concrete at lower water-cement ratios. Positive correlation exists between slump and WGP percentage replaced. Both water-cement ratio and replacement amount significantly influence compressive strength, as confirmed by ANOVA. However, long-term mechanical strength and durability research is essential before recommending WGP for environmentally friendly and sustainable concrete applications, promising increased understanding through additional data collection and analysis.