2022 Fiscal Year Final Research Report
Effective Repair and Strengthening of Damaged Concrete Structures with Consideration of Porous and Meso Structures
Project/Area Number |
19K04684
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 23010:Building structures and materials-related
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Research Institution | Muroran Institute of Technology |
Principal Investigator |
Takase Yuya 室蘭工業大学, 大学院工学研究科, 准教授 (30515911)
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Co-Investigator(Kenkyū-buntansha) |
濱 幸雄 室蘭工業大学, 大学院工学研究科, 教授 (70238054)
金澤 健 北海学園大学, 工学部, 准教授 (80823773)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Keywords | 既存建物 / 鉄筋コンクリート造 / 凍害劣化 / 補修 / 補強 |
Outline of Final Research Achievements |
For the SDGs and the decorbonation society, it is important to use concrete structures for a long time. While concrete will be damaged as the time goes by. Therefore, the design technique of repair and reinforcement of damaged concrete structures is required. In this study, 1) the damaging method for concrete specimens with using liquid nitrogen was proposed, 2) the repair surface property between damaged concrete and polymer cement mortar was tested and evaluated, 3) the mechanical property and repair effect of RC beams were investigated, finally, 4) the anchoring performance of post-installed anchors was investigated.
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Free Research Field |
建築構造学
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Academic Significance and Societal Importance of the Research Achievements |
コンクリートの材料的劣化機構に関する研究は,これまでにも多くの研究者がチャレンジしてきたが,材料的劣化が構造部材に与える影響,あるいは補修・補強効果に及ぼす影響を定量的に評価した研究は極めて少ない。この点,本研究成果は,劣化したコンクリート構造物に対する補修・補強の設計法の構築に大いに寄与することができ,その社会的意義は十分に大きい。 また本研究で提案した,液体窒素によるコンクリート試験体の劣化手法は,劣化した構造部材の実験を容易に実現し得るものであり,その学術的意義も極めて高いと考えられる。
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