▎ 摘　　要

NOVELTY - Preparation of uniformly dispersed and directionally arranged graphene reinforced asphalt composite material involves (i) heating a base asphalt to melt, and controlling the temperature to maintain a fluid state and obtain a molten asphalt, (ii) using low-speed shearing machine to add graphene into molten asphalt at 500-1000 rpm for 10-15 minutes for directional low-speed shearing treatment, increasing the temperature of the molten asphalt to 155-165°C, and high-speed shearing for 30-40 minutes at 4000-5000 rpm in a high-speed shearing machine in which the rotating direction of the rotor is the same when directional low shearing and high shearing to obtain a mixture of asphalt and graphene, (iii) keeping the mixture of asphalt and graphene at 160-165°C for 30-35 minutes, and naturally cooling to room temperature. USE - Preparation of uniformly dispersed and directionally arranged graphene reinforced asphalt composite material used for bridge deck paving material and road paving material. ADVANTAGE - The method prevents easy agglomeration and uneven distribution of graphene in asphalt, ensures excellent compatibility of graphene in asphalt, and provides graphene reinforced asphalt composite material having rutting factor increased by 480-490%, recovery rate value increased by 240-245%, non-recoverable creep compliance value decreased by 80-85% at 1.6 kPa and deflection value increased by 110-115% as compared to the base asphalt at -12°C. The graphene with strong capillary suction effectively absorbs the molten asphalt into draped structure of the graphene surface, thus forming uniformly dispersed and directionally arranged graphene reinforced composite material.