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针对夏季炎热地区沥青混凝土路面高温车辙破坏严重的问题,本文采用硬质沥青这一新材料。通过对硬质沥青(A-30)、石油沥青(A-70)、SBS改性沥青及其混合料在高温稳定性方面进行全面对比试验,以评价硬质沥青及其混合料的高温性能,为硬质沥青的推广应用提供依据,也为夏季炎热地区、重轴载道路和长大纵坡路段的高等级公路沥青路面建设提供参考。
In order to solve the problem of high temperature rutting of bituminous concrete pavement in summer hot area, this paper adopts the new material of hard bitumen. A comprehensive comparative test of high-temperature stability of hard asphalt (A-30), petroleum asphalt (A-70), SBS modified asphalt and their mixtures was conducted to evaluate the high temperature performance of hard asphalt and its mixtures, It provides reference for the popularization and application of hard bitumen as well as reference for asphalt pavement construction of high-grade highway in summer hot area, heavy-axle loading road and long-length longitudinal section.