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车辙是当前沥青混凝土路面最为突出的问题之一,而空隙率是影响沥青混凝土路面性能最为显著的要素之一,沥青混合料空隙率对其抗车辙性能影响较大。首先以影响空隙率最为主要的3个因素(压实功、沥青含量、级配结构)作为基点,设计了3种不同条件下形成不同空隙率的试验方案,然后借助于车辙仪进行室内试验,并对得到的试验结果从理论上进行了可靠性分析,最终确定了每种试验方案沥青混合料空隙率与最佳抗车辙性能的临界点,这为下一步设计出最优抗车辙性能沥青混合料级配奠定了实践及理论基础。
Rutting is one of the most prominent problems in the current asphalt concrete pavement. Voidage is one of the most significant factors that affect the performance of asphalt pavement. The porosity of asphalt mixture has a great influence on its rutting resistance. First of all, taking the three factors that affect the porosity as the most important factor (compaction work, asphalt content, gradation structure) as a starting point, we designed three test schemes with different void ratios under different conditions. Then, The reliability of the obtained test results is theoretically analyzed, and finally the critical point of the void ratio and the optimum anti-rutting performance of the asphalt mixture for each test program is determined. This is the next step to design the optimal anti-rutting performance asphalt mixture Material grading laid a practical and theoretical basis.