Study on Design of New Rubber Asphalt Stress Absorbing Layer

In order to improve the performance of modified asphalt stress absorbing layer,based on the characteristics of different gradations,the optimum gradation of new rubber asphalt stress absorbing layer was determined; technical indices of mixture of rubber asphalt stress absorbing layer were proposed;comparisons of high-temperature performance as well as fatigue performance were conducted.The results indicate that the newly developed rubber asphalt stress absorbing layer is of good pavement performance when the asphalt accounts for 9 percent of the mixture.