Research on the relationship between permanent deformation and air void structure of asphalt macadam mixture;

According to the strength character of asphalt macadam mixture,dynamic load press-in test having confining pressure was adopted to analyze permanence deformation of HMA in high temperature.

Base on function analysis of asphalt macadam base,the design principles and indexes of asphalt macadam mixture are determined,then the type of coarse framework,distribution of fine aggregate and the optimum filling coefficient are determined according to new character of material design method including the optimum vibrating tec.

The creep tests of soil and crushed stone mixture;

The characteristics and structural mechanism of stone mastic asphalt pavement was analyzed.

According to the structure of stone mastic asphalt (SMA), its high and low temperature properties, fatigue and water-resistant performance were researched.

Research on strength development of cement-treated crush stone mixture in laboratory;

Research on strength characteristic of low cement-treated crush stone mixtures in laboratory and field road;