Effect of ultraviolet aging on high and low temperature performance of asphalt and asphalt mixture
DING Biao
KE Wenhao
ZUO Xing
LEI Yu
ZOU Xiaolong
Abstract：In order to study the effect of ultraviolet aging on the high and low temperature performance of asphalt and asphalt mixture,the ultraviolet aging test has been carried out.The results show that:at low temperature performance,the stiffness of asphalt increases and creep rate decreases after ultraviolet aging,which is more obvious at the initial stage of reaction.Results of bending test at low temperature show that UV aging has little effect on the anti-cracking performance of asphalt mixture.The results of DSR test show that the ratio of viscoelastic components of asphalt has changed after UV aging,and complex modulus of high temperature has certain relation with temperature at low temperature,they increase linearly with frequency at first and then decreases,while at high temperature,they increase linearly.with frequency.The dynamic stability of asphalt mixture after UV aging is increased,and the rutting depth decreases gradually.
Keywords：road engineeringasphaltasphalt mixtureUV aginghigh-temperature performancelow-temperature performance
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 9-12,45 )