Evaluation on High Temperature Stability Performance of Asphalt Mixture by Parameters of GTM Test

This paper carried out a research on variable paramenters of GTM tests of different asphalt mixture. A correlative analysis was made between those parameters and laboratory results of the corresponding triaxail repeated load creep tests. The paper concludes that Parameter K1 of compaction curve which is obtained from GTM test (K1 here refers to the average slope of compaction curve from the start of compaction to 97% density) can show high temperature stability performance of asphalt mixture better as Parameter K1 has a good correlative relationship with creep stiffness modulus of triaxial repeated load creep test, and the linear correlation coefficient is above 0.90. Thus, it can be adopted as a simple and practical method to evaluate high temperature stability performance of asphalt mixture.