High strength concrete utilizing waste glass and recycled aggregates

The amount of garbage from glass and concrete structures grew daily, polluting the environment. Reducing the amount of trash and managing waste effectively are essential elements of sustainable development. One essential element of effective disposal methods in civil engineering projects is the reuse and recycling of waste. Using used glass as a natural aggregate substitute in concrete could help address the growing issue of efficient glass waste management in developing nations. There has been a lot of research on producing environmentally friendly concrete from glass trash or recycled concrete aggregate, but most of it has focused on these two resource categories separately. The combination of glass trash with recycled concrete aggregates to create environmentally friendly concrete, particularly in case of high strength concrete, has never been done before; more research is needed to fill in the gaps and provide recommendations. In this study, the compressive and tensile properties of eco-high strength concrete (HSC) were experimentally investigated using glass waste and old concrete particles as a replacement for natural big/small aggregate. The second uses coarse recycled glass aggregate (BG) to replace a large natural coarse aggregate (CBA) at ratios of 0, 10, 20, and 40%, while the first uses small, recycled glass aggregate (SG) to replace fine sand (FS) at a variety of levels (0, 10, 25, 50, and 100%). The third employs recycled concrete aggregate (RA) in conjunction with BGs as a substitute for CBA, while the fourth uses RA alone at a variety of levels (0, 16, 40 and 80%). The findings demonstrated that the compressive and tensile strengths of HSC dropped when SGs took the place of fine sand (FSs), especially when the replacement level was 100%. Tensile values declined by 5.4, 8.2, and 25%, respectively, while compressive characteristics of HSC decreased by 24.8, 27.66, and 38.03% when BG was used in place of 10, 20, and 40% of CBA. If 16, 40, and 80% of CBAs were substituted with RAs mixes without the use of BG, the strength at compression of HSC decreased by 18.1, 27.58, and 33.37%, respectively, in contrast to the reference mix without RAs. This study contributes to sustainable construction practices within construction engineering, particularly in optimizing material selection and minimizing lifecycle costs through eco-efficient concrete design.