Research on Asphalt Performance based on the Experiment of Indoor Simulating Aging Test

Anti-aging performance of asphalt material is a key factor affecting the durability of asphalt pavement,simulating the aging test in laboratory is an important way to study the performance of asphalt aging. In order to simulate the asphalt aging,rolling thin film oven testing,penetration testing,softening point test and dynamic shear rheometer test had been done and the test data is analyzed to discuss how different aging conditions affect the performance of asphalt and asphalt aging mechanism. The results show that the extension of the aging time,the improvement of asphalt aging temperature makes losses increase,softening point and penetration decrease,asphalt mixture fatigue resistance decline; ageing time and temperature changes can dramatically change mobility of asphalt; when we increase the shear rate,the rheological properties of asphalt index decreased.