| Project/Area Number |
21760351
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Yokohama National University |
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Principal Investigator |
HAYASHI Kazuhiko Yokohama National University, 工学研究院, 特別研究教員 (20334633)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | コンクリート構造 / 耐久性 / 疲労 / 鋼材腐食 / ひび割れ / ひび割れ幅 / 鉄筋コンクリート / かぶり / 塩害 / 内部損傷 / 物質移動 |
|---|
| Research Abstract |
To clarify the relationship between steel corrosion and cracks in RC members subjected to cyclic loading, influencing factors affecting steel corrosion were examined. Focusing on the loading condition and cracking condition in actual structures, measurement of crack width near reinforcing bars and accelerated steel corrosion tests were carried out. As results, crack width near reinforcing bars and bond degradation length increased as the cover length exceed particular threshold value. Steel corrosion may initiate earlier despite of having larger cover thickness. It was clarified that crack width near reinforcing bars may be the important factor on steel corrosion.
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