Chen Shuan-fa

Wheel tracking evaluation of heavy duty pavement based on matter-element model

with the increasing volume of traffic, wheel tracking of heavy load pavement has become a main disease of asphalt concrete pavement. It was badly threatening driving safety of vehicle. Aim at deficiencies lie in traditional experimental method for anti-track capability, evaluation index of wheel track has been constructed, so did matter-element model for wheel tracking evaluation of heavy load pavement. A calculation program was made by matlab7. The results objectively reflects anti-track capability of asphalt mixture which bas been used in highway and provide scientific foundation for improving anti-track capability.

The corrosion fatigue properties of high performance concrete

With the loading test equipment of corrosion fatigue specially designed, the corrosion fatigue characteristics of high performance concrete (HPC) withstanding the interaction of third point fatigue loading and Na2SO4 solution were investigated and analyzed. The experimental results indicate that water-binder ratio evidently influences the corrosion fatigue characteristics of HPC, and a moderate quantitative fine mineral admixture enhances the corrosion fatigue resistance of HPC. The effect is more significant when fly ash and silica fume are added.