In order to improve the performance of the warm recycled asphalt mixture,the waste matrix asphalt was warmly regenerated by adding different amounts of styrene-butadiene-styrene triblock copolymer (SBS) and styrene-butadiene rubber (SBR) modified asphalt for regeneration.The study used uniaxial penetration strength test,bending creep test,freeze-thaw split test and four-point bending fatigue test to analyze its high/low temperature performance,water stability and fatigue performance.The results shown that the addition of SBS and SBR modified asphalt can improve the performance of the warm recycled mixture.When the SBS content was 5%,the mixture had the best high-temperature performance.When the SBR content was 4%,the mixture had the best low-temperature performance.When the SBS content was 5%,the water stability of the mixture was the best.In the process of the modifier content of 3%～5%,compared with the fatigue performance of the matrix asphalt mixture,5% The amount of SBS modified asphalt was the most significant increase.The comprehensive consideration of various properties was recommended to choose SBS modified asphalt with a modifier content of 5%.
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