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沥青混合料的老化是影响沥青路面使用性能的一个重要因素。文章利用压力老化仪(PAV)对沥青进行不同时间的老化,对不同程度老化后的沥青进行常规3大指标试验和粘度试验,分析老化对沥青结合料3大指标和粘度的影响,建立沥青指标随老化时间的变化关系,并与现场不同使用龄期路段芯样抽提得到的沥青指标进行对比分析,建立了室内老化时间和现场老化时间之间的相关关系。
The aging of asphalt mixture is an important factor affecting the performance of asphalt pavement. In this paper, PAV is used to aging asphalt for different time. Conventional three indexes and viscosity tests are conducted on asphalt with different degrees of aging. The influence of aging on the three indexes and viscosity of asphalt binder is analyzed. Asphalt index With the aging time of the relationship between the change and the use of different age sections of asphalt core samples obtained by the comparative analysis of asphalt indicators to establish the indoor aging time and the correlation between the aging time.