Enhancing Properties of Geopolymer Concrete with Recycled Coarse Aggregates

Among the resources that people use the most worldwide is concrete. Alternatives to traditional concrete, such as geopolymer concrete, are being investigated in light of the rising focus on environmental issues worldwide, including global warming, sustainable development, and recycling. Portland cement is not present in the alternative binder used in geopolymer concrete, which takes the place of cement-based binder. A particular kind of geopolymer binder is one that has fly ash in it that has been activated by a sodium hydroxide and silicate alkaline solution. There may be financial and environmental advantages to using recycled concrete waste from building and demolition sites as a supply of aggregate rather than having it dumped in a landfill. Aggregate made from crushed building and demolition waste is referred to as recycled concrete aggregate (RCA). When combined, recycled concrete aggregate and geopolymer concrete employ waste materials and do away with the requirement for Portland cement. Recycled concrete aggregate (RCA), regular Portland cement concrete, and geopolymer concrete have all been the subject of extensive research; but, at the time of this study, there was little information available regarding the use of RCA in geopolymer. Investigating the mechanical characteristics of geopolymer concrete with recycled concrete aggregate in place of some of the natural coarse aggregate was the goal. The research findings that point to the possibility of adding RCA to geopolymer concrete mixtures are presented in this research work.