In order to analyze the treatment scheme and effect of dense-graded asphalt stabilized macad-am technology on unstable rutting disease,based on the test section of an expressway,the dense gra-ded asphalt stabilized macadam scheme was analyzed from the aspects of raw materials,gradation,as-phalt content,PE content and modification type,and the implementation effect was tracked and evalu-ated.The results show that:(1)With the increase of PE dosage,the dynamic stability of the mixture increases and the rutting depth decreases.When the dosage exceeds 0.35%,the curve change trend slows down,so the optimal dosage is 0.35%.(2)The descending order of high temperature perform-ance is high modulus asphalt stabilized crushed stone,SBS modified asphalt stabilized crushed stone,and 70#asphalt stabilized crushed stone.At the extreme temperature of 70℃,the rut depth of high modulus asphalt stabilized crushed stone is only 21.47%higher than that of 60℃,indicating that its high temperature performance is relatively stable.(3)From the test results of rutting and flatness af-ter one year of operation of the test section,it can be seen that the dense graded high modulus asphalt stabilized gravel technology has a good effect on the treatment of unstable rutting disease.
维普
万方数据