Formation mechanism, detection and evaluation of weathering patina on weathering steel bridges
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Bibliographic Details
| Author(s): |
Jingwen Zhang
(Institute of Bridge Engineering, College of Highways, Chang'an University, Xi’an, China)
Chenxin Tan (Institute of Bridge Engineering, College of Highways, Chang'an University, Xi’an, CHINA) Chunsheng Wang (Institute of Bridge Engineering, College of Highways, Chang'an University, Xi’an, CHINA) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Risk Intelligence of Infrastructures, Seoul, South Korea, 9-10 November 2020 | ||||
| Published in: | IABSE Conference Seoul 2020 | ||||
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| Page(s): | 313-321 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/seoul.2020.313 | ||||
| Abstract: |
The weathering bridge steel has a lower corrosion rate than low alloy steel bridge, which could produce dense and stable patina on the steel surface, separating the steel substrate from the external corrosion eviroment and preventing the further corrosion. In this paper, the patina of weathering steel for bridge were studied from formation mechanism, evaluation method and patina field and in-suit testing. The formation mechanism and composition of patina was studied, the applicability of detection and evaluation methods of weathering steel bridge were clarified, and the patina stability of weathering steel orthotropic bridge deck and existing bridge in China were evaluated. The purpose of this paper is to provide guidance and selection for the maintenance methods of the patina in the weathering steel bridge. |
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| Keywords: |
weathering steel bridge patina formation mechanism detection and evaluation method field and in-situ testing
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