In order to improve anti-rut ability of AC-20 modified asphalt mixture in asphalt pavement engineering,this paper investigates the influence of the gradation and different OAC of AC-20 modified asphalt mixture on Marshall performance standards with the help of Marshall orthogonal design methods and variance analysis,and the optimum aggregate gradation engineering design of AC-20 is put forward.

Through the experimental theory of the mix design of asphalt mixture and the monitoring practice of experimental data,it analyses the factors influencing mix design,so as to seek an ideal point between design control index and Marshall index to make out the aggregate gradation and the best asphalt amount.

Study of the Effect of Aggregate Grading on Marshall Test;

Revival of Marshallian Industrial District Theory and Its Theoretical Meanings;

Factors Affceting Productivity by Marshall;