The possible reasons of non-loaded cracks of high-strength concrete structures were discussed in this paper.

slab s cracks while pointing out the important meaning on research slab s non-loaded cracks.

This thesis investigated and researched on non-loaded crack, especially those caused by thermal-shrink, and analyzed the thermal-shrink stress of beam, slab and continuous-wall, found that according data of civil and overseas offered thermal-shrink calculating formula without considering effect of factors, such as.

The cracks in concrete component of bridges and culverts compose load crack and distortion crack.

According to the investigation and inspection on asphalt pavement corrugation section above semi-rigid base in Gan-Ding Highway,the causes of asphalt pavement corrugation are analyzed based on non-loading cracks of base,hydrodynamic pressure and dynamic effect of vehicles.

According to non-loaded cracks produced in asphalt concrete pavement with semi-rigid base reasons caused the transverse cracks in lime-flyash stabilized broken stone base are analyzed;at the same time corresponding measures are proposed for mix proportion design to strengthen construction control and reduce non-loaded reflection cracks for asphalt concrete pavement with semi-rigid base.

Analysis of non-loaded fatigue crack early in asphalt pavement and the settlement;