Study on the Suitability of Various Test Methods for Evaluating High Temperature Performance of New Asphalt Mixtures

To effectively prevent and control the rutting of asphalt pavement, it is important to accurately evaluate the high temperature stability of asphalt mixtures. To evaluate the suitability of each test method for evaluating the high temperature performance of asphalt mixture, this paper takes dynamic repetitive creep test, uniaxial penetration test, and coaxial direct shear test as the research object. Based on the analysis, this paper made a comparative analysis of three new test methods for evaluating the high temperature performance of asphalt mixture. Secondly, the test conditions of each test method are compared and analyzed. Six typical asphalt mixtures, SMA13, AC13, SAC13, EME14, SUP20, and BRAC20, were mixed indoors, and high temperature performance of mixtures were tested using three new methods. Through comparative analysis of the test results the indoor test results of uniaxial penetration test, and coaxial direct shear test were coincide with actual pavement performance of the mixture.