IMPACT OF COARSE AND FINE AGGREGATE DUAL REPLACEMENT ON CONCRETE PERFORMANCE
To improve the utilization of discarded concrete,this paper investigates the effects of different replace-ment rates of recycled coarse and fine aggregates on the workability and mechanical properties of concrete.The re-sults indicate that as the replacement rate of recycled aggregates increases,the slump,compressive strength,and split tensile strength of the concrete decrease.The 100%replacement group exhibited the lowest workability and me-chanical performance but still met basic engineering requirements.By optimizing concrete mix ratios and the use of additives,the application potential of recycled aggregates in concrete can be effectively enhanced.The study,which employs various replacement rates,provides a comprehensive analysis of the performance changes in recycled aggre-gate concrete and is significant for promoting the sustainable development of building materials and environmental protection.