Effect of lignin fiber on low temperature performance of asphalt mixture
In order to study the effect of different lignin fiber content on the low temperature performance of asphalt mixtures,different lignin fibers(0%,2%,4%,6%and 8%)are added to the asphalt mixtures.The low temperature performance of asphalt mixtures under different low temperature conditions(-6℃,-12℃,-18℃and-24℃)is studied through low temperature performance tests.The results show that the stiffness modulus of asphalt mixtures with different lignin fiber contents increases with the decrease of temperature,and the best effect on low temperature performance is achieved with a 4%content.The flexural creep compliance of asphalt mixtures with different lignin fiber contents decreases with the decrease of temperature.When the content is 4%,the flexural creep compliance of asphalt mixtures is the highest under various low temperature conditions.The splitting strength of asphalt mixtures with different lignin fiber contents shows a trend of first increasing and the decreasing with the decrease of temperature,and the best strengthening effect is obtained when the lignin fiber content is 4%.
asphalt pavementasphalt mixturepavement performancelow temperature performancelignin fiber
NETL
NSTL
万方数据
