Anti-icing Technology and Effectiveness Evaluation of Super-hydrophobic Bionic Cement Concrete Pavement
GAO Yingli, LI Xuekun, DAI Kaiming, YU Xianming, YUAN Jiang
Key Laboratory of Bridge Engineering Safety Control by Hunan Province, Department of Education, Changsha University of Science & Technology, Changsha 410114;
Abstract: The model of super-hydrophobic bionic cement concrete pavement was prepared, combining micro-nano pavement building with super-hydrophobic material coating technology. The coating technology of super-hydrophobic materials was studied and the preparation process was analyzed. Anti-icing performance was tested by self-designed ice-road adhesion strength testing device, the contact angle and durability were tested, the surface energy was calculated, then the anti-icing performance of super-hydrophobic bionic cement concrete pavement was evaluated comprehensively. The results indicate that the residual rate of ice on the surface of super-hydrophobic cement concrete specimens is 29.9%, which is about 1/3 of the common specimen, showing good anti-ice perfor-mance. The contact angle of the super-hydrophobic cement concrete specimen is 153.5°, while the contact angle of the common specimen is 0°. The calculation of surface energy reveal that the construction of the super-hydrophobic coating can reduce the surface energy, merely 3.4% of the ordinary cement pavement. It is further verified that the super-hydrophobic cement concrete pavement can significantly reduce the ice-road adhesion strength. The contact angle is still above 90° by simulating the friction between the tire and the road surface, indicating that the super hydrophobic pavement has good durability.
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2017, Vol. 31 
