Song, J;
Zhao, D;
Han, Z;
Xu, W;
Lu, Y;
Liu, X;
Liu, B;
... Parkin, IP; + view all
(2017)
Super-robust superhydrophobic concrete.
Journal of Materials Chemistry A
, 5
(28)
pp. 14542-14550.
10.1039/c7ta03526h.
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Abstract
Steel reinforced concrete is often used in buildings, roads and bridges, however, freeze–thaw damage and steel corrosion pose threats to the strength of concrete. Furthermore, ice formation on concrete road-surfaces greatly increases injury and fatality rates. Superhydrophobic materials are promising candidates to alleviate these problems due to their anti-corrosion and anti-icing properties. However, the weak mechanical robustness of superhydrophobic surfaces makes them difficult to apply to concrete surfaces. Here we report a facile route to fabricate superhydrophobic concrete (S-concrete) via metal mesh covering and fluoroalkylsilane modification. Comparative robustness tests, including sandpaper abrasion, knife scratch and hammer beat, were performed on commercial superhydrophobic paint + adhesive coatings and our S-concrete, which indicated that our S-concrete had far superior surface mechanical durability. To illustrate the practical prospects, we performed further tests on the S-concrete, including artificial cold rain, freeze–thaw, and corrosion under applied voltage in corrosive solution. The S-concrete showed remarkable anti-icing, anti-freeze–thaw, and anti-corrosion properties, and mechanical robustness.
| Type: | Article |
|---|---|
| Title: | Super-robust superhydrophobic concrete |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c7ta03526h |
| Publisher version: | http://doi.org/10.1039/c7ta03526h |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Technology, Chemistry, Physical, Energy & Fuels, Materials Science, Multidisciplinary, Chemistry, Materials Science, OIL-WATER SEPARATION, ALUMINUM-ALLOY, SURFACES, COATINGS, PERFORMANCE, FABRICATION, DURABILITY, STRENGTH, STEEL, METAKAOLIN |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1561722 |
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