Corrosion Environment Monitoring of Local Structural Members of a Steel Truss Bridge under a Marine Environment
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International Journal of Steel Structures https://doi.org/10.1007/s13296-020-00424-3
Corrosion Environment Monitoring of Local Structural Members of a Steel Truss Bridge under a Marine Environment Min‑Gyun Ha1 · Seok Hyeon Jeon1 · Young‑Soo Jeong2 · Ho‑Seong Mha3 · Jin‑Hee Ahn1 Received: 18 November 2019 / Accepted: 6 October 2020 © Korean Society of Steel Construction 2020
Abstract Corrosion environment monitoring was conducted on the structural members of a steel bridge truss in a marine environment. The corrosion depth measured on exposed monitoring steel plates and the galvanic corrosion current measured by Atmospheric Corrosion Monitoring sensors attached to structural members were used to evaluate the local corrosion environment of each type of structural member in the steel bridge truss. From the evaluation results, the corrosion environment of the horizontal structural member was found to be worse than those of the other members, indicating that the horizontal members should be the primary target for monitoring and maintenance efforts. Keywords Local corrosion environment · Monitoring · Steel bridge truss · Marine environment · Exposure test
1 Introduction The typical steel materials used in bridges have excellent mechanical properties, but experience corrosion over time that decreases their thickness and thus their capacity (Wang et al. 2015; Sultana et al. 2015). Corrosion occurs mainly as the result of environmental factors such as high relative humidity and rainfall, and such corrosive environments are often associated with the local environments of bridge * Jin‑Hee Ahn [email protected] Min‑Gyun Ha [email protected] Seok Hyeon Jeon [email protected] Young‑Soo Jeong [email protected] Ho‑Seong Mha [email protected] 1
Department of Civil Engineering, Gyeongnam National University of Science and Technology, 33 DongJin‑ro, Jinju 52725, South Korea
2
Seismic Research and Test Center, Pusan National University, 49 Busandaehak‑ro, Yangsan 50612, South Korea
3
Department of Civil Engineering, Hoseo University, 20 Hoseo‑ro 79 Beon‑gil, Baebang‑eup, Asan 31499, South Korea
members. Therefore, even different members installed in the same structure may exhibit different degrees of corrosion depending on their structural installation location and corresponding exposure to the local corrosion environment. However, there have been relatively few studies applying these approaches in the corrosion environments of actual bridges (Yadav and Tsuru 2004; Nishikata et al. 2005; Wall et al. 2005). Studies related to corrosion damage of steel bridges include the development of the corrosion process, the change in corrosion depth of weathering steel and fatigue problems due to corrosion damage (Zhongxiang et al. 2018; Tong et al. 2020; Urban et al. 2015; Krivy et al. 2016). However, there have been few studies on the corrosion condition of non-weathering carbon steel bridges, specifically considering the corrosion environment for corrosion damage, structural detail, and local direction. For carbon steel
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