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 asphaltpavement is overrated by dynamic stability of the asphalt mixture under 100% compaction degree in laboratory.