掺加抗车辙剂改性沥青混合料高温性能研究

Research on High Temperature Performance of Modified Asphalt Mixture with Anti-Rutting Agent

对掺加抗车辙剂的AC-20C和Sup-20两种级配的沥青混合料进行车辙试验,且应用灰色关联分析及统计学检验方法对车辙试验结果进行分析。结果表明,马歇尔特征值中的马歇尔稳定度和马歇尔模数是影响车辙试验结果的主要因素;在PR或RA相同的条件下,级配由AC-20C转变为Sup-20时,对车辙试验结果影响较小。改性剂PR或RA对改善沥青混合料的抗车辙性显著有效,且PR对混合料的改性性能优于RA。

By means of rutting test to AC-20 C and Sup-20 gradation asphalt mixture,and the rutting test results are analyzed by the application of grey relational analysis and statistical method of inspec- tion. The results indicate that marshall stability and marshall modulus are main influence factors to rutting test results in marshall characteristic values, the gradation changes from AC-20 C to Sup-20 which has little influence to rutting test results in the same conditions of PR or RA content. Modifier PR or RA is signifi- cant effective in improving anti-rutting of asphalt mixture, and PR is better than RA in modificating the as- phalt mixture performance.