Shrinkage Reduction of Environment-Friendly High-Fluidity Ductile-Fiber-Reinforced Concrete Using Recycled Aggregate for Durability Improvement of Buildings
| Project/Area Number |
18K04442
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 23010:Building structures and materials-related
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| Research Institution | Tokai University |
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Principal Investigator |
WATANABE Ken 東海大学, 工学部, 教授 (10384934)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 構造材料 / 繊維補強コンクリート / 工学 / 建築学 / 建築構造・材料 |
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| Outline of Final Research Achievements |
In this study, we investigated on the shrinkage strain reduction of high-fluidity ductile-fiber-reinforced concrete using recycled aggregate (R-HFDFRC) for proposing durability improvement technology of reinforced concrete (RC) buildings considering the global environment. In addition, we carried out loading test and numerical analysis on shrinkage strain reduction type R-HFDFRC RC beam specimens and investigated into the applicability to RC members.
As a result, the mix proportions, mechanical properties of shrinkage strain reduction type R-HFDFRC, and the applicability to RC members of such materials are clarified. These results will greatly contribute to improving the durability of RC buildings.
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| Academic Significance and Societal Importance of the Research Achievements |
再生骨材を使用した高流動高靭性コンクリートは、RC建築物の耐震性を大きく向上させる可能性を有する材料である。しかし、一般的なコンクリートと比較して、収縮ひずみが非常に大きくなるという問題を抱えていた。収縮ひずみが大きくなるほどひび割れ幅の増大が懸念され、RC建築物の耐久性の確保が問題となる。
今回、再生骨材を使用した高流動高靭性コンクリートの収縮ひずみ低減手法等が明らかとなり、RC建築物の耐久性向上に大きく貢献する成果が得られた。今後、解体コンクリート塊から製造される再生骨材の利用も更に促進され、地球環境保全への貢献にもつながると期待される。
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Report
(4 results)
Research Products
(9 results)
