Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10225313 | Construction and Building Materials | 2018 | 12 Pages |
Abstract
Ice formation on asphalt pavement may lead to potential hazards for driving safety. To reduce the safety risk, this paper aims at preparing a superhydrophobic coating (SC) on asphalt pavement. Room-temperature vulcanized silicone rubber (RTV) is the main component of the SC. The micro-/nano- SiO2 particles modified by a silane coupling agent (KH550) were sprayed on the RTV surfaces to prepare the SC. The contact angle test and surface morphology observation results indicate that the contact angle of water droplets increases effectively due to the rough micron-/nano- structures on the SC. Additionally, icing observation reveals that SC delayed icing time of water droplets 1.5 times longer than the asphalt mixture specimen without SC. Adhesion force between ice and SC decreases by 84% compared with that between the ice and asphalt mixture at â5â¯Â°C. The tensile strength of the RTV sheet containing 30 parts per hundred parts (phr) of fumed silica is 13â¯times than that of the RTV sheet without fumed silica. Adhesion force between SC and asphalt mixture achieve the maximum value of 875â¯kN when SC contains 5â¯phr of KH550. To sum up, it can be concluded that the SC has superior anti-icing and mechanical properties on asphalt pavement.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Chao Peng, Pengxu Chen, Zhanping You, Songtao Lv, Fang Xu, Weili Zhang, Jianying Yu, Hao Zhang,