The influence of humidity condition on the strength forming of the base mixture were quantitatively analyzed by the strength test simulating the possible humidity condition of the underlay below the base in permafrost area,and the cause of this phenomena was discussed.

Study on geogrid reinforcement strength mechanism;

All these characters including strength mechanism, high and low temperature stabih ties, anti - fatigue capacity and water stability are studied and contested with normal asphalt concrete.

All these characters including strength mechanism, high and low temperature stabilities, anti-fatigue capacity and water stability are studied and contested with normal asphalt concrete.

According to the research on fiber enhanced bituminous mixtures,this paper analyzed its marshall stability,high temperature stability,cracking resistance at low temperature and fatigue resistance,and studied its mechanism of strength.

The composition structure and mechanism of strength of SMA mixture are analyzed as compared with asphalt concrete.

In this paper according to the current situation of research on SMA worldwide, and based on research results on SMA with modified bitumen in Tang-Harbour Expressway in Province Hebei, the composition structure, characteristics, mechanism of strength and influencing factors of properties on SMA are systematically analysed.

Through research of the performance of flexible base、intensity forming principle、Choose the pavement structure layer and intensity forming principle of asphalt chip seal and adaptability after rubblization, Point out the package which the asphalt chip seal applicability and typical pavement structure in rural concrete pavement reconstruction.

Study on the bridge surface damp-proof course material type based on strength formation mechanism