| Project/Area Number |
25820194
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
UCHIDA SHINYA 立命館大学, 理工学部, 任期制講師 (70543461)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 鉄筋コンクリート / 非破壊試験 / 非接触衝撃弾性波法 / 内部欠陥 / コンクリート / 動磁場・弾性波動解析 |
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| Outline of Final Research Achievements |
This study, first, focuses on the level of adhesive filling around a post-installed anchor bolts in concrete. In order to evaluate the level of adhesive filling qualitatively and non-destructively, exciting coil designed by elastic wave simulation. Subsequently, non-contact impact elastic wave methods developed by combine with exciting coil and laser Doppler vibrometer, attempted the level of adhesive filling. As a results, for detecting bolts with a low adhesive filling level of 50% or less, focusing on whether peaks would appear or not due to multiple reflections (due to the resonance of longitudinal waves) is effective.
By using a similar process, the feasibility of non-contact impact elastic wave methods for evaluating grouting condition in tendon ducts of existing prestressed concrete members was investigated. As a results, it is confirmed that the proposed methods are effective to be employed on existing PC members.
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