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采用体积设计方法,研究了环氧沥青混合料级配组成和成型前后养护时间对混合料性能的影响。试验结果表明:采用体积设计方法设计的环氧沥青混合料粗集料多,空隙率小,保证了环氧沥青混合料具有良好的抗滑性和抗渗性能。环氧沥青混合料成型前后养护时间影响试件的空隙率、矿料间隙率、沥青饱和度、稳定度和劈裂强度。成型前经过养护的环氧沥青混合料,成型后初始稳定度和劈裂强度比成型前未经过养护的高;但成型前经过养护试件的最终稳定度和劈裂强度低于成型前未经过养护的试件。而且,环氧沥青混合料在60℃养护7d后,已经具有良好的抗水损害性能和抗车辙性能。
The volume design method was used to study the influence of the composition of epoxy asphalt mixture and the curing time before and after molding on the properties of the mixture. The test results show that the volumetric design of the epoxy asphalt mixture coarse aggregate, porosity is small, to ensure that the epoxy asphalt mixture has good skid resistance and impermeability. Epoxy asphalt mixture curing time before and after the impact of the specimen porosity, porosity, asphalt saturation, stability and splitting strength. The cured epoxy asphalt mixture before molding has a lower initial stability and cleavage strength than the unprotected high before molding. However, the final stability and the cleavage strength of the cured specimen before molding are lower than those before molding Conservation of the specimen. Moreover, the epoxy asphalt mixture has good water damage resistance and rutting resistance after being cured for 7 days at 60 ° C.