In order to improve the quality of road service and prolong the service life of asphalt pavement,nano-zinc oxide(Nano-ZnO)and basalt fiber(BF)were used as composite admixtures to modify the matrix asphalt to improve its high temperature performance.The conventional performance test and dynamic shear rheological test of matrix as-phalt,Nano-ZnO modified asphalt and Nano-ZnO/BF composite modified asphalt were carried out to analyze the influ-ence of modifier on the high temperature performance of asphalt.The test results show that the three performance in-dexes are improved to varying degrees after adding Nano-ZnO and BF,and the rutting factor of Nano-ZnO/BF compos-ite modified asphalt is significantly higher than that of Nano-ZnO modified asphalt,that is,BF can effectively improve the high temperature performance of asphalt.
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