Investigation of changes in high temperature performance of asphalt concrete under ultraviolet radiation

Abstract

In recent years, asphalt concrete pavement in being a large number of applications, and gradually appeared a number of pavement damage problems, especially in the strong ultraviolet and high temperature environment of asphalt concrete pavement, because of long-term exposure to ultraviolet radiation, resulting in high-temperature durability of the pavement deteriorated year by year. In this paper, the number of UV aging cycles, aging temperature and UV radiation intensity on the rutting depth and dynamic stability are investigated through high temperature rutting test. The test results show that: for asphalt concrete, the number of UV aging cycles has a more pronounced effect on dynamic stability and rut depth compared to aging temperature and UV radiation intensity.