Study on High‐Temperature Performance of Graphene‐Modified Guss Asphalt Mixture

Abstract Guss Asphalt Concrete is widely used in steel bridge deck paving projects. However, due to the relatively large deformation of steel bridge decks and the poor high‐temperature stability of Guss Asphalt mixtures, the pavement layer is prone to damage during its service life. This study focuses on Guss Asphalt Concrete and utilizes graphene to modify the Guss Asphalt in order to improve its pavement performance. Scanning Electron Microscopy (SEM) tests were conducted on graphene‐modified asphalt, and high‐temperature performance tests were performed on the asphalt mixture. The results showed that Graphene Oxide (GO), a layered nanomaterial with a large specific surface area and high surface energy, helps asphalt molecules adsorb onto the surface of graphene and form intercalated structures with asphalt molecules. The addition of GO slightly reduces the flowability of the asphalt mixture, increases the penetration and dynamic stability of the asphalt mixture, and improves the high‐temperature stability of the Guss Asphalt mixture. In summary, the application of GO is beneficial for enhancing the high‐temperature pavement performance of steel bridge deck paving.