2011 Fiscal Year Final Research Report
Allowable crack depth of concrete members suffered earthquake load
| Project/Area Number |
21560590
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Building structures/materials
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| Research Institution | Kinki University (2011)
Osaka University (2009-2010) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
OHNO Yoshiteru 大阪大学, 先端科学イノベーションセンター, 特任教授 (30029194)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 鉄筋コンクリート / 残留ひび割れ幅 / 鉄筋腐食 / 塩化物イオン濃度 |
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| Research Abstract |
The method to estimate residual crack width on concrete members suffered earthquake load was studied by experimental and analytical investigations and the calculation formula to calculate residual crack width was derived. By experimental study the relation between crack width on the surface of concrete member and degree of corrosion on steel bars, Cl-ion concentration are studied. 0.2mm more over crack width caused increasing Cl-ion concentration in the cracking surface of concrete and degree of corrosion of steel bars equipped in concrete.
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