▎ 摘　　要

NOVELTY - Preparation of graphene composite asphalt, involves mixing a surfactant-containing graphene powder with absolute ethanol and ultrasonically dispersing for 50-100 minutes to obtain a graphene-ethanol dispersion containing 0.03-0.2 %mass surfactant-containing graphene powder, heating and melting asphalt, mixing the graphene-ethanol dispersion with molten asphalt in a ratio of (1-2.5):(10-14), stirring for 50-80 minutes at 100-200 degrees C, and drying at 50-80 degrees C for 5-10 hours. USE - Preparation of graphene composite asphalt. ADVANTAGE - The method is simple, shortens production cycle, enables quick and complete mixing of graphene and asphalt, and provides graphene composite asphalt having improved softening point and viscosity.