Abstract：In order to obtain the performance of the graphene oxide (GO) modified asphalt binder, the viscosity test, traditional indicators test and SHRP test were carried out on the AH-70# asphalt binder and SBS modified asphalt binder with different GO dosages. The results show that the addition of GO can significantly improve the viscosity, high temperature stability and anti-rutting ability of asphalt binder, but it has no obvious effect on low temperature crack resistance. GO can obviously reduce the penetration of asphalt binder and improve its softening point, but it has little impact on ductility. GO does not significantly change the glass transition temperature of asphalt binder, but it can obviously improve the crosslinking density. The modification effect of GO of base asphalt is better than that of SBS modified asphalt, and the optimum dosage of base asphalt and SBS modified asphalt is 0.05% and 0.2%, respectively.

Keywords：road engineering; graphene oxide; asphalt binder; crosslinking density