This paper summarizes floating ground leveling course system,compound ground leveling course system and renovating technique of old gypsum base leveling course which are used most widespreadly in Europe,introduces application of ELOTEX polymer,specially FLOWKIT series products developed recently from ELOTEX,in self-leveling ground material and self-leveling mortar.

Analysis on temperature stress of composite pavement;

Finite element analysis of temperature stress in Polymer Modified Cement Concrete and Portland Cement Concrete(PMCC-PCC) composite pavement;

Maintenance standards of composite pavement on high-level highway;

Analysis of tunnel compound road surface drainage layer stress;

The characteristics and treating measure of the compound road surface interface layer

A finite element analysis model was established by the FEM software ABAQUS and the reflection crack of AC layer in Continuously Reinforced Concrete-Asphalt Concrete(CRC-AC) compound pavement was numerically analyzed with the fracture mechanics theory and singularity isoparametric elements method.

Technical performance analysis of AC pavement,PCC pavement and PCC+AC compound pavement shows that PCC+AC compound pavement both has the advantage of AC pavement and PCC pavement and it is an economic and serviceable pavement material.

Combining with rehabilitation project of Quangui expresswa y in Guang xi province,this paper put forward composite overlay on old PCC pavement,then based on fracture mechanics and finite element analysis, this paper thoroughly i nvestigate the effect of this structure affected by traffic load.