2021 Fiscal Year Final Research Report
Prediction of fatal corrosion damage in steel structures based on couples between coating deterioration and electrochemical mechanism
| Project/Area Number |
19H02227
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 22020:Structure engineering and earthquake engineering-related
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
三谷 泰浩 九州大学, 工学研究院, 教授 (20301343)
楊 沐野 九州大学, 工学研究院, 特任助教 (70836519)
押川 渡 琉球大学, 工学部, 教授 (80224228)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 腐食 / 塗膜 / 鋼構造物 / シュミレーター / 電気化学機構 |
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| Outline of Final Research Achievements |
To develop a prediction system for fatal corrosion damage in steel structures and to clarify coupling phenomena between coating deterioration and electrochemical mechanism, influence of coating defect and deterioration on the electrochemical mechanism of steel material was investigated. In addition, some problems occurring when thin corrosion sensor is designed and manufactured were extracted by considering the corrosive environment and progress of the coating defect and deterioration for structural part level.
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| Free Research Field |
工学
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| Academic Significance and Societal Importance of the Research Achievements |
鋼構造物を腐食に対して，安全かつ経済的に維持管理するためには，防食皮膜の劣化に伴う鋼材の腐食損傷の経時性と致命的な腐食損傷に着目することで，従来の対症療法的で過不及になりがちな維持管理を実質的な予防保全的な維持管理に転換する必要がある．この維持管理の改善に際して，本研究の皮膜劣化と鋼材の電気化学機構の連成現象に着目した新しい視点の研究成果の活用が期待される．
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