Used of waste annealed glass as admixture for concrete finishing

Abstract

Every year, one million tons of waste glass are created worldwide; because it cannot decompose, it pollutes the environment. Nevertheless, because of its chemical composition, scrap glass is recommended for concrete production as a partial substitute for binding or filler (aggregate) materials. The usefulness of annealed glass as an additive for concrete finishing is investigated in this study. Using glass as an admixture material in construction may lessen the need for natural aggregates, allowing the environment to recover from extensive quarrying and preventing lasting harm. The study's findings significantly impact the construction industry. Glasses are broken up, sieved, and divided into fine and coarse particles. Mix proportioning uses ASTM standards, which call for nominal concrete mix proportions of 1:3 and 0.50 water-to-cement ratio. Different percentages are used to augment the amount of natural aggregates: 10%, 20%, 30%, 40%, and 50%. The characteristics of glass and natural aggregates were examined in a lab setting. Every mixture has a 28-day curing period and five test samples. Each sample undergoes compressive and bond strength tests after the curing period. According to the compressive strength test, every mixture met the required minimum compressive strength of 1847.8 psi. Out of five mixtures, the results of the bond strength test indicate that two of the combinations achieved the minimum bond test strength of 365.617N or 26.16 psi. The mix with the maximum compressive strength (above 2081.3 psi) and bond strength (average of 377.49N) has the highest P-value of all the mixes, according to a statistical analysis of the results for both tests using the T-Test. As a result, 10% was the ideal proportion in both experiments for crushed annealed glass, which works well as an additive in concrete finishing.