Multiple-index Comprehensive Evaluation of High Temperature Performance of SBS Modified Asphalt Mixture

Abstract:

Through wheel track test indoors, static creep test as well as dynamic creep test, deformation characteristics have been studied under specific condition of temperature, pressure and so on，and high temperature performance of bituminous mixture is comprehensively evaluated; It is put forward that such indices as dynamic stability, relative deformation, static creep stiffness and dynamic creep stiffness should be used to make a multi-indices evaluation of high temperature performance. Meanwhile, Analysis of the correlation between these indicators shows that both dynamic stability and relative deformation between samples of different thickness (50~70mm) shows a good linear correlation, and there is also a good linear relationship between static stiffness and dynamic stiffness under the conditions of temperature of 40 ℃.