▎ 摘　　要

The objective of this research is to clarify the mechanism of interaction between graphene oxide (GO) and styrene-butadiene-styrene (SBS) modified asphalt. In this paper, the GO/SBS-modified asphalt was pre -pared using GO with contents of 0.1 wt%, 0.3 wt%, and 0.6 wt%. The dynamic mechanical analysis (DMA) test was applied to characterize the viscoelastic properties of the asphalt. Fluorescence microscopy and atomic force microscopy (AFM) were employed to observe the internal structure and interface enhance-ment. Fourier transform infrared spectroscopy (FTIR) was used to determine whether some compounds were removed from the base asphalt based on the variations of the functional group. Furthermore, molec-ular dynamic simulations were performed to understand the subject and conduct the performance eval-uation of the experiments. The results explain the interaction mechanism between GO and SBS-modified asphalt and provide multi-scale insights into the performance evaluation for the design of modified asphalt polymer materials. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).