The Impact of Recycled Concrete Aggregate on the Concrete’s Properties: A Comparative Study

This research focuses on the mechanical and physical qualities of concrete made with aggregate from demolished concrete buildings rather than natural aggregate (NA). The use of recycled concrete aggregate (RCA) may help to preserve natural aggregate sources while also aiding in environmental conservation by minimizing the amount of demolition. RCA is produced by simple assembled equipment, and after crashing and storage, it may be blended with natural aggregate to produce fresh concrete. The aim of this study is to determine whether recycled concrete can serve as a substitute for natural aggregate. Additionally, the study investigates the impact of RCA on the mechanical properties of concrete made with recycled concrete, and other properties like durability, freezing-throwing resistance, structural performance, and workability. The treatment process may be employed to increase the quality of RCA, bringing its qualities closer to natural aggregates. It may be inferred that the treatment and pozzolanic material help to increase the strength. When compared to regular concrete with natural coarse aggregate, recycled concrete often has a strength difference of 10 to 25%.