Glass Waste as Coarse Aggregate Filler Replacement in Concrete

Abstract

AbstractGlass has become necessary and irreplaceable in daily human life due to its benefits like abrasion resistance, durability, and availability in any form. The high demand for glass in our daily lives has resulted in a significant amount of glass waste. To address the issue of glass wastes, which has negative repercussions on individuals, culture, and the environment, glass waste is utilized as a partial replacement material for coarse aggregates in concrete manufacture. In earlier research, concrete made with glass waste of coarse particles improved concrete strength. Nonetheless, there have been few studies using glass waste as a superplasticizer in concrete. This study utilized glass waste as coarse particles in concrete, combined with a superplasticizer to boost its strength. An optimum glass waste amount as a coarse aggregate substitution is identified and optimized. Glass waste in the form of discarded glass bottles was broken into 5–20 mm fragments sizes and is used as coarse aggregates substitute in amounts of 5, 10, and 15%, respectively. The glass waste concrete samples were tested and evaluated for compressive strength after 7 and 28 days of curing to determine the concrete's strength. According to the research, 10% of the glass waste substitutes with conventional concrete result in equivalent pressure. Concrete's total compressive strength is 28.9 MPa when coarse particles are replaced with 10% glass waste. In addition, to enhance the strength of concrete, a superplasticizer was used with a 10% glass waste replacement. The concrete was treated with 0.8, 1, and 1.2 of superplasticizer, and it was discovered that the concrete treated with 0.8 ml had the highest compressive strength. Overall, coarse aggregates can be partially replaced with glass waste at a weight-to-weight ratio of up to 10%, but total replacement is not achievable. Still, more research into the influence of glass waste as coarse aggregates in concrete mixing on other characteristics is needed.KeywordsConcreteGlassWasteCompressiveStrength