The Eurasia Proceedings of Science Technology Engineering and Mathematics

Öz

The disposal of non-biodegradable waste glass poses a serious environmental threat as it can cause soil, water, and air pollution when not properly discarded in landfills. The use of glass in construction has shown promising results in enhancing various properties of concrete and improving overall sustainability. This study investigated the mechanical properties of mixed colored glass, comprising green and brown hues, and clear glass in mortar, to explore the feasibility of using colored glass as a replacement for sand and to determine how the addition of color affects the mechanical properties of mortar. The incorporation of waste glass as a partial replacement for sand resulted in a 2.7% increase in flow table values when 5% of Mixed Colored Glass Sand (MCGS) was utilized in place of sand, as compared to the control mix (CM). Conversely, a 5.4% and 4.7% decrease in flow table values were observed when 15% of clear glass (CGS) and MCGS were used as a substitute for sand respectively. When 15% of MCGS and CGS were replaced with sand, compressive strength increased by 60% and 42.6% respectively, compared to the control mix, when 5% MCGS, 10% MCGS, 5 CGS, and 10% CGS were observed. After 28 days of curing, a 10.6% and 10% increase in strength was observed when 10% of MCGS and CGS were replaced. At 7 days, a 3.3% increase in flexural strength was found when 5% of MCGS was replaced with sand was observed. The fire resistance test showed reduced mass and compressive strength of specimens at different temperatures. No significant expansion of ASR was recorded throughout the test period. The use of waste glass as a substitute for sand has shown improvements in environmental sustainability and economics. When 10%WGS and 15%WGS were utilized, 20% and 30% of waste glass sand was replaced with sand, respectively. Incorporating waste glass into construction enhances the mechanical properties of concrete and promotes the conservation of natural resources and environmental sustainability. This study examined the economic advantages of replacing sand with waste glass and found that CM has the highest cost of 90.64 Tl. At replacement of 5%, 10%, and 15% MCGS showed 1.07%, 1.96%, and 2.95% savings compared to the control mix, respectively. Moreover, replacing 5%, and 10% of natural sand with clear glass sand could bring about savings of 1.91%%, and 3.63%, respectively. Replacing 15% CGS showed the highest savings of 5.45% compared to the control mix. The study compared the use of colored and clear glass as a partial replacement for sand and found that there were slight differences in the results, but overall they were similar.