Application Research of High Modulus Asphalt Mixture Using Hard Grade Binder

Abstract

Hard grade binder was the most effective method to achieve the high modulus asphalt mixtures. Taking advantage of the project of the reconstruction and extension of Beijing-Hong Kong-Macao highway, the proportioning design, road performances, mechanical performances and construction processes of high modulus asphalt mixture using 20 Pen grade binder were studied during the construction of the test section. Results showed that high modulus asphalt mixture was not a binder substitution, a specialized design methodology and construction techniques are also needed.