AC-13 asphalt mixture composed of pure natural aggregate,steel slag+natural aggregate,steel slag+RAP+natural aggregate were designed for Marshall experiment.On this basis,the pavement performance of reclaimed asphalt concrete mixed with steel slag was studied by using surface active mixture type warm mixing agent.The results show that steel slag as coarse aggregate instead of natural aggregate can improve the performance of asphalt concrete,and also improve the performance of recycled asphalt mixture.By adding warm mixing agent to recycled asphalt con-crete,the aging asphalt in RAP can be better integrated with new asphalt and regenerant while reducing the construc-tion temperature,so as to improve the performance of recycled asphalt concrete.
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