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为研究沥青老化对沥青混合料路用性能的影响,选用国内常规试验和汉堡车辙试验分别对2种改性沥青混合料进行性能试验,并采用不同的评价指标对沥青混合料性能进行评价.试验结果表明:155℃高温短期老化能够真实的模拟改性沥青混合料拌和、运输、摊铺和碾压等环节实际短期老化的状态,汉堡车辙试验评价指标能够真实的反映短期老化后改性沥青混合料的综合路用性能,可以避免国内普通车辙试验评价短期老化后沥青混合料高温稳定性的局限性.
In order to study the influence of asphalt aging on asphalt pavement performance, the performance tests of two kinds of modified asphalt mixture were carried out by routine domestic test and Hamburg rut test respectively, and the performance of asphalt mixture was evaluated by different evaluation indexes. The results show that the short-term aging at 155 ℃ can simulate the actual state of short-term aging during the mixing, transportation, paving and rolling of the modified asphalt mixture. The evaluation index of the haul test in Hamburg can truly reflect the short- The comprehensive road performance of the material can avoid the limitation of domestic common rut test to evaluate the high temperature stability of asphalt mixture after short-term aging.