重载干线公路沥青路面材料性能检测与评价

Testing and Evaluation on Performance of Asphalt Pavement Material of Overloaded Trunk Highway

以河北省张石高速公路支线107国道为例,分析了重载交通情况下该公路沥青路面的损坏特点,采用剪切试验、马歇尔稳定度试验,筛分试验等室内试验,系统研究芯样沥青混合料的力学性能、级配组成以及沥青性质。进而评价了该沥青路面结构组合的合理性,对减少路面的早期病害、提高重载干线公路的使用性能提供了一定的理论支持。

In order to reasonably determine the correlations between the damage causes of asphalt pavement of overloaded trunk highway and the material performance of the pavement, National Highway 107 was selected to conduct the core drilling, and the apparent performance of the core samples was thoroughly analyzed. Based on this, the mechanical properties of asphalt mixture samples were systematically studied by shear test and Marshal stability test. The graded composition and the nature of asphalt of the samples were comprehensively studied by the extracting and screening tests. The physical and mechanical properties of cement stabilized base course were analyzed via unconfined compression test.