Evaluation Methods of Asphalt Mixture’s High Temperature Performance with PR Additives Added

Abstract:

Researched on the evaluation methods of asphalt mixture high temperature performance with PR additives added using rutting test, uniaxial penetration test and repeated shear test (constant height) (RSCH). The results of rutting test show that, for the confliction between dynamic stability and rutting depth, it is hard to discriminate the impacts on mixture high temperature performance between PR.S and PR.M. Using extreme shearing strength of uniaxial penetration test and K1, K2, N, γ of RSCH, as the evaluation indexes of asphalt mixture high temperature performance with PR additives added, obtain the same conclusion, and both of the two methods are suitable for high temperature performance evaluation. The four indexes of RSCH not only represent asphalt mixture high temperature performance with PR additives added, but also discriminate the different steps of shearing deformation progress, and represent the mixture damage mechanics.