沥青混合料高温稳定性影响因素的灰关联熵分析

通过不同条件下沥青混合料车辙试验，以变形量为参考序列运用灰关联熵分析方法研究了混合料性质、荷载及温度等因素对沥青混合料高温稳定性的影响程度。研究表明，荷载、温度和空隙率对沥青混合料高温稳定性影响程度最为显著。然后，讨论了不同荷载和空隙率下的沥青混合料车辙变形规律，得到动稳定度、车辙变形与压实度、荷载应力的关系式。室内车辙试验用压实度为100％的沥青混合料来评价实际沥青路面的高温稳定性，确实高估了沥青混合料的高温抗车辙性能。

Effect Factor Analysis of Asphalt Mixture Rut-resistance Property with Grey Relation Entropy Method

Based on the wheel rutting test under different conditions, the grey relation entropy method was utilized to analyze the influence factors including load term, temperature term and the material characters. It is indicated that stress, temperature and air void are the most important factors. And then, the permanent deformation under different stresses and air voids was discussed and the relationship among compaction degree, stress and dynamic stability and rut depth was found out. The high-temperature stability of actual asphalt pavement is overrated by dynamic stability of the asphalt mixture under 100% compaction degree in laboratory.