The new nano material-nano SiO2 was selected as the asphalt modifier,and the traditional SBS modifier was selected to modify the asphalt synchronously,and the penetration,softening point,ductility,segregation test and high temperature rheology test were carried out on the nano SiO2 modified asphalt and the nano SiO2-SBS modified asphalt with different dosages,and the test results showed that the nano SiO2 could improve the consistency of the asphalt and SBS modified asphalt,improve the softening point,and significantly improve the rutting resistance.In addition,the addition of nanomaterials can improve the uneven dispersion of SBS in asphalt and improve its storage stability,but nano-SiO2 has a weakenig effect on the low-temperattor performance of asphalt.
road worksmodified asphaltSBShigh temperature performance
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