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沥青路面在长期使用过程中会出现老化,沥青老化会降低路面的使用性能,在高速公路扩建工程中有必要对旧沥青路面性能进行评价。本文对常用沥青老化试验方法进行了分析,提出采用PAV老化试验方法对某高速公路使用了3年和8年的两段沥青路面的沥青老化情况进行测试分析,并与钻芯取样结果进行对比。测试结果表明,采用不同PAV老化时间可以模拟旧沥青路面的老化程度。
Asphalt pavement will be aged during long-term use. Aging of asphalt will reduce the serviceability of pavement. It is necessary to evaluate the performance of old pavement in the expressway expansion project. This paper analyzes the commonly used asphalt aging test methods, and proposes the use of PAV aging test method to test and analyze asphalt aging conditions of two asphalt pavements using a 3-year and 8-year highway for a highway. The results are compared with the results of core sampling. The test results show that the aging degree of the old asphalt pavement can be simulated by different PAV aging time.