石墨烯在沥青和沥青混合料中的研究综述

Review of Graphene in Asphalt and Asphalt Mixture

石墨烯作为一种纳米材料,可以影响材料的微观结构和宏观性能,同时使材料具有导电性和导热性。石墨烯及其相关纳米材料在沥青及其混合料中的应用效果显著。综述了石墨烯(graphene,Gr)、氧化石墨烯(graphene oxide,GO)和石墨烯纳米片(graphene nanosheets,GNPs)在沥青及其混合料中的特性,包括高温性能、低温性能、老化性能、水稳定性、导电性和导热性。研究指出,Gr、GO和GNPs可改善沥青和沥青混合料的性能,提升高温抗车辙性能、抗老化性能和抗水损害性能。同时,由于Gr、GO和GNPs具有优异的导热性和导电性,可以降低沥青和混合料的电阻率,提高导热能力。石墨烯可以在建设融雪化冰、自感应路面等智能道路方面发挥更好的作用。

As a nanomaterial,graphene can affect the microstructure and macroscopic properties of the material,and make the material have electrical conductivity and thermal conductivity.The application effect of graphene and its related nanomaterials in asphalt and its mixture is remarkable.The characteristics of Gr(graphene),GO(graphene oxide) and GNPs(graphene nanosheets) in asphalt and its mixtures were reviewed,including high temperature performance,low temperature performance,aging performance,water stability,electrical conductivity and thermal conductivity.It is pointed out that Gr,GO and GNPs can improve the performance of asphalt and asphalt mixture,and improve the high temperature rutting resistance,aging resistance and water damage resistance.At the same time,due to the excellent thermal conductivity and electrical conductivity of Gr,GO and GNPs,the resistivity of asphalt and mixture can be reduced and the thermal conductivity can be improved.Graphene can play a better role in the construction of intelligent roads such as snow melting,ice melting and self-sensing pavement.