Development of Environment-Friendly Concrete through Partial Addition of Waste Glass Powder (WGP) as Cement Replacement

This paper presents the study carried out on the utilization of Waste Glass Powder (WGP) as supplementary cementitious material in concrete. The evaluation of the influence of WGP on the mechanical properties of concrete was carried out by casting and testing of concrete samples as per ASTM standards (cylinders and beam elements). The control samples were designed to represent field conditions with a target compressive strength of ۲۰,۰۰۰ kPa. The Portland cement in concrete was substituted with WGP in proportions of ۰%-۳۵% by weight, in increments of ۵%. Two curing domains were adopted in the preparation of the test samples to evaluate the effect of pozzolanic material wherein the tested samples were cured for ۲۸, ۵۶, and ۸۴ days. The study results indicated a reduction in compressive strength of concrete up to ۱۰% with partial replacement of cement with ۲۵% of WGP when standard curing of ۲۸ days was adopted. Furthermore, with the same replacement proportion and prolonged curing for ۸۴ days, the gap in strength reduction was reduced by ۵%. However, a significant decrease in workability was noted between the control concrete samples and glass powder infused concrete. Furthermore, the Waste Glass Powder Concrete (WGPC) exhibited an improved flexural strength with the modulus of rupture for WGPC being ۲% higher than control concrete at the age of ۸۴ days. Based on the results of this study it was concluded that ۲۵% replacement of cement with WGP provides an optimum replacement ratio. Doi: ۱۰.۲۸۹۹۱/cej-۲۰۲۰-۰۳۰۹۱۶۲۰ Full Text: PDFThis paper presents the study carried out on the utilization of Waste Glass Powder (WGP) as supplementary cementitious material in concrete. The evaluation of the influence of WGP on the mechanical properties of concrete was carried out by casting and testing of concrete samples as per ASTM standards (cylinders and beam elements). The control samples were designed to represent field conditions with a target compressive strength of ۲۰,۰۰۰ kPa. The Portland cement in concrete was substituted with WGP in proportions of ۰%-۳۵% by weight, in increments of ۵%. Two curing domains were adopted in the preparation of the test samples to evaluate the effect of pozzolanic material wherein the tested samples were cured for ۲۸, ۵۶, and ۸۴ days. The study results indicated a reduction in compressive strength of concrete up to ۱۰% with partial replacement of cement with ۲۵% of WGP when standard curing of ۲۸ days was adopted. Furthermore, with the same replacement proportion and prolonged curing for ۸۴ days, the gap in strength reduction was reduced by ۵%. However, a significant decrease in workability was noted between the control concrete samples and glass powder infused concrete. Furthermore, the Waste Glass Powder Concrete (WGPC) exhibited an improved flexural strength with the modulus of rupture for WGPC being ۲% higher than control concrete at the age of ۸۴ days. Based on the results of this study it was concluded that ۲۵% replacement of cement with WGP provides an optimum replacement ratio. Doi: ۱۰.۲۸۹۹۱/cej-۲۰۲۰-۰۳۰۹۱۶۲۰ Full Text: PDF