Volume 10,Issue 4
This paper systematically reviews domestic and international research literature on the performance evolution of recycled aggregate concrete under high-temperature conditions in recent years. It summarizes the influence patterns of factors such as temperature, aggregate replacement rate, and fiber admixtures on the high-temperature performance of recycled aggregate concrete from the perspectives of macroscopic mechanical properties, microscopic degradation mechanisms, and performance improvement techniques. The analysis indicates that the interfacial transition zone is a weak link in the high-temperature damage of recycled aggregate concrete; its high-temperature resistance can be effectively enhanced through methods such as fiber reinforcement and alkali-activated cementitious systems.