| Project/Area Number |
21760364
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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 | Nagaoka National College of Technology |
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Principal Investigator |
MURAKAMI Yuki Nagaoka National College of Technology, 環境都市工学科, 助教 (70509166)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 鉄筋コンクリート / 鉄筋腐食 / 付着劣化 / 拘束圧 / 付着 / 付着構成則 / 付着構成 |
|---|
| Research Abstract |
To evaluate the influence of the restraint degree of concrete on bond stress behavior of RC member damaged by corrosion, expansion test using nonexplosive demolition agent was carried out. As a result, the thickness of cover-concrete and the compressive strength of concrete greatly influence the restraint degree of concrete and the restraint of concrete decreases exponentially as the increase of crack width of the concrete surface. Furthermore, the deterioration of bond characteristics due to restraint degree of concrete was formulated. This model includes the influence of the concrete strength, thickness of cover-concrete, pressure of the corrosion expansion and crack width of the concrete surface.
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