Evaluation method for time-dependent corrosion depth of uncoated weathering steel using thickness of corrosion product layer

Kainuma, Shigenobu; Yamamoto, Yuya; Ahn, Jin-Hee; Jeong, Young-Soo

Evaluation method for time-dependent corrosion depth of uncoated weathering steel using thickness of corrosion product layer

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Type: Academic journal

Author: Kainuma, Shigenobu (Department of Civil Engineering, Kyushu University) Yamamoto, Yuya (Planning Department, Japan Expressway Holding and Debt Repayment Agency) Ahn, Jin-Hee (Department of Civil Engineering, Gyeongnam National University of Science and Technology) Jeong, Young-Soo (Seismic Simulation Test Center, Pusan National University)

Journal: 테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제65권 제2호 SCOPUS

Published: 2018.1

Pages: 191 - 201 (11page)

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Evaluation method for time-dependent corrosion depth of uncoated weathering steel using thickness of corrosion product layer

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The corrosion environments in a steel structure are significantly different depending on the individual parts of the members. To ensure the safety of weathering steel structures, it is important to evaluate the time-dependent corrosion behavior. Thus, the progress and effect of corrosion damage on weathering steel members should be evaluated; however, the predicted corrosion depth, which is affected by the corrosion environment, has not been sufficiently considered until now. In this study, the time-dependent thicknesses of the corrosion product layer were examined to quantifiably investigate and determine the corrosion depth of the corroded surface according to the exposure periods and corrosion environments. Thus, their atmospheric exposure tests were carried out for 4 years under different corrosion environments. The relationship between the thickness of the corrosion product layers and mean corrosion depth was examined based on the corrosion environment. Thus, the micro corrosion environments on the skyward and groundward surfaces of the specimens were monitored using atmospheric corrosion monitor sensors. In addition, the evaluated mean corrosion depth was calculated based on the thickness of the corrosion product layer in an atmospheric corrosion environment, and was verified through a comparison with the measured mean corrosion depth.

#corrosion depth #corrosion product layer #weathering steel #atmospheric exposure test #electro-magnetic coating thickness tester

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Kainuma, Shigenobu

Affiliation Department of Civil Engineering, Kyushu University

Fields Engineering > Architectural Engineering > Civil Engineering

Articles 1 Usage 3

Yamamoto, Yuya

Affiliation Planning Department, Japan Expressway Holding and Debt Repayment Agency

Fields Engineering > Architectural Engineering > Civil Engineering

Articles 1 Usage 3

Ahn, Jin-Hee

Affiliation Department of Civil Engineering, Gyeongnam National University of Science and Technology

Fields Engineering > Architectural Engineering > Civil Engineering

Articles 3 Usage 3

Jeong, Young-Soo

Affiliation Seismic Simulation Test Center, Pusan National University

Fields Engineering > Architectural Engineering > Civil Engineering

Articles 1 Usage 3

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