▎ 摘　　要

The use of nanomaterials to modify the asphalt mixture to enhance its performance has become an area of growing interest. Graphene oxide (GO) has recently been found to be the potential nanomaterial for improving the performance of asphalt binder due to its advantageous properties and dispersion ability in different matrixes. In this study, GO modified asphalt binder was employed in hot mix asphalt to assess its influence on the engineering characteristics of hot mix asphalt (HMA). A base asphalt binder with 60/70 penetration grade was first mixed with GO at different concentrations using a high shear mixing equipment and then employed to prepare the asphalt mixtures. A series of performance tests, e.g., resilient modulus, dynamic creep, freeze-thaw splitting, Marshall immersion and semi-circular bending (SCB) fracture were conducted to investigate the rutting and fatigue performance, moisture stability and fracture resistance of the GO-modified HMA mixtures. Results suggest that significant improvement in mechanics behavior of HMA may be achieved by incorporating GO compared to the conventional mixture. (C) 2020 Elsevier Ltd. All rights reserved.