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Clarification of internal swelling reaction mechanism from the viewpoint of fracture mechanics and proposition of assessment methodology of structural performance

Research Project

Project/Area Number 21H01407
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22010:Civil engineering material, execution and construction management-related
Research InstitutionNagoya University

Principal Investigator

Miura Taito  名古屋大学, 工学研究科, 准教授 (10718688)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2023: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2021: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Keywords内部膨張劣化 / 離散解析 / 破壊力学 / 付着性状 / 内部膨脹劣化 / 変形性能 / 微細構造分析
Outline of Research at the Start

本研究では、コンクリートの内部膨張反応に対してひび割れを主軸とした破壊力学的観点からのアプローチによって、ASRとDEF固有の膨張挙動・コンクリートの力学特性変化・鉄筋の付着性状の変化・RC部材レベルの持続荷重作用を含む長期変形性能の変化を、ASRとDEF双方に対して「実験的評価⇔解析的検証」を並列で進める。ISR膨張メカニズムに立脚した膨張圧発現モデルとひび割れに着目した力学特性低下モデルと付着劣化モデルを構築するとともに、ISRにより劣化したコンクリート構造物の性能照査において評価/測定すべき重要な指標の提案を目指す。

Outline of Final Research Achievements

In this study, the expansion behavior, changes in mechanical properties of concrete, changes in adhesion properties of reinforcing bars, and changes in structural performance at the RC member level inherent in the internal expansion reactions ASR (alkali-silica reaction) and DEF (delayed ettringite formation) of concrete were evaluated through experimental and analytical studies.
As a result, we proposed that the spatio-temporal distribution of the expansion phase has a significant influence on the macroscopic expansion behavior in the expansion anisotropy of ASR and DEF. A systematic mechanism of mechanical property degradation applicable to both mechanical and expansion cracks was proposed. Conducted an international joint research project between Japan and France to obtain the world's first experimental data on adhesion degradation of steel bars due to expansion and proposed a mechanism for this degradation.

Academic Significance and Societal Importance of the Research Achievements

膨張に関する力学現象を評価可能な世界最先端の数値解析手法を開発し、破壊力学的観点から統一的・体系的に説明可能な膨張異方性メカニズムを提唱しており、次世代の膨張研究の潮流の中核となる研究成果を輩出した。
膨張異方性メカニズムに立脚したひび割れ情報に基づく破壊力学指標による膨張異方性と力学特性低下の推定手法により、膨張劣化した構造物の耐久性照査手法を刷新することができる可能性が非常に高く、学術的分野への貢献だけでなく、高い工学的価値を有している。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (22 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] University of Toulouse/University Gustave Eiffel(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Toulouse/University Gustave Eiffel(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Toulouse/University Gustave Eiffel(フランス)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Anisotropic expansion behavior and crack orientation of reinforced concrete due to the alkali-silica reaction2024

    • Author(s)
      Sara Farooq, Gentaro Aoki, Taito Miura, Yuichiro Kawabata, Hikaru Nakamura
    • Journal Title

      Cement & Concrete Composites

      Volume: 151 Pages: 105568-105568

    • DOI

      10.1016/j.cemconcomp.2024.105568

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of Reinforcing Rebar on Expansion due to Delayed Ettringite Formation along the Bonding Length – Part II: Bond Performance of Reinforced Concrete Affected by DEF Expansion2023

    • Author(s)
      Taito Miura, Misato Fujishima, Yuichiro Kawabata, Stephane Multon, Renaud-Pierre Martin, Naoshi Ueda, Yuya Takahashi, Shingo Asamoto, Jean-Francois Seignol
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 21 Issue: 11 Pages: 869-888

    • DOI

      10.3151/jact.21.869

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2023-11-18
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Influence of Reinforcing Rebar on Expansion due to Delayed Ettringite Formation along the Bonding Length – Part I: The Role of Bond on Expansive Behavior of Concrete2023

    • Author(s)
      Yuichiro Kawabata, Taito Miura, Misato Fujishima, Naoshi Ueda, Yuya Takahashi, Shingo Asamoto, Stephane Multon, Renaud-Pierre Martin, Jean-Francois Seignol
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 21 Issue: 11 Pages: 851-868

    • DOI

      10.3151/jact.21.851

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2023-11-09
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stress-bearing Mechanism of Concrete Damaged by Delayed Ettringite Formation under Compressive Stress with Various Loading Patterns2023

    • Author(s)
      Fujishima Misato、Miura Taito、Kawabata Yuichiro
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 21 Issue: 4 Pages: 294-306

    • DOI

      10.3151/jact.21.294

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2023-04-19
    • Related Report
      2023 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of the expansive sites distribution on alkali-silica reaction expansion under applied stress: Crack orientation as a key factor for expansion transfer2023

    • Author(s)
      Taito Miura, Stephane Multon, Yuichiro Kawabata
    • Journal Title

      Cement & Concrete Composites

      Volume: 144 Pages: 105300-105300

    • DOI

      10.1016/j.cemconcomp.2023.105300

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of elastic and plastic strains in concrete damaged by alkali-silica reaction during various compression loading tests2023

    • Author(s)
      Sara Farooq, Gentaro Aoki, Misato Fujishima, Taito Miura, Hikaru Nakamura
    • Journal Title

      Construction and Building Materials

      Volume: 393 Pages: 132099-132099

    • DOI

      10.1016/j.conbuildmat.2023.132099

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanism for reduction in compressive properties of cementitious materials in relation to internal crack patterns due to ASR and DEF expansion2022

    • Author(s)
      Miura Taito、Sato Katsuki、Fujishima Misato、Nakamura Hikaru、Kawabata Yuichiro
    • Journal Title

      Cement and Concrete Composites

      Volume: 128 Pages: 104441-104441

    • DOI

      10.1016/j.cemconcomp.2022.104441

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of the distribution of expansive sites in aggregates on microscopic damage caused by alkali-silica reaction: Insights into the mechanical origin of expansion2021

    • Author(s)
      Miura Taito、Multon Stephane、Kawabata Yuichiro
    • Journal Title

      Cement and Concrete Research

      Volume: 142 Pages: 106355-106355

    • DOI

      10.1016/j.cemconres.2021.106355

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Experimental Study on Compressive Behaviors of Concrete Exposed to Alkali-Silica Reaction Under Multidirectional Restraints2024

    • Author(s)
      Yuya Takahashi, Zhaojing Li, Xi Ji, Hyo Eun Joo, Misato Fujisima, Ryoichiro Nagao, and Taito Miura
    • Organizer
      17th International Conference on Alkali-Aggregate Reaction in Concrete
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modification of Aggregate Crack Orientation from Different Expansive Site Under Applied Stress Evaluated by Mesoscale Discrete Model2024

    • Author(s)
      Taito Miura, Stephane Multon, and Yuichiro Kawabata
    • Organizer
      17th International Conference on Alkali-Aggregate Reaction in Concrete
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of Crack Orientation of ASR Expansion Under Restraint Condition on Compressive Behavior Evaluated by Mesoscale Discrete Model2024

    • Author(s)
      Misato Fujishima, Taito Miura, Yuya Takahashi, Stephane Multon, and Yuichiro Kawabata
    • Organizer
      17th International Conference on Alkali-Aggregate Reaction in Concrete
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The influence of the expansive site of delayed ettringite formation on the anisotropy of expansion evaluated by mesoscale discrete model2023

    • Author(s)
      Misato Fujishima, Taito Miura, Hikaru Nakamura
    • Organizer
      The Eighth International Symposium on Life-Cycle Civil Engineering (IALCCE 2023)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 二軸拘束下においてDEF膨張したコンクリートの力学特性の異方性に関する基礎的研究2023

    • Author(s)
      岡本真実、三浦 泰人、中村 光
    • Organizer
      令和5年度土木学会中部支部研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] DEF膨張ひび割れの方向性によるコンクリートの力学特性低下傾向の変化に関する実験2023

    • Author(s)
      長尾 僚一郎、三浦 泰人、高橋 佑弥
    • Organizer
      令和5年度土木学会全国大会年次学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] DEF劣化した鉄筋コンクリートの膨張・鉄筋引抜き過程の付着性状2023

    • Author(s)
      藤島実里,三浦泰人,川端雄一郎,中村光
    • Organizer
      令和4年度土木学会中部支部研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Influence of DEF expansion on mechanical behavior under uniaxial compressive stress evaluated by Digital Image Correlation2022

    • Author(s)
      Misato Fujishima
    • Organizer
      16th International Conference on Alkali-Aggregate Reaction in Concrete
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of different expansion models on the anisotropy of ASR expansion under restraint evaluated by 3D-RBSM2022

    • Author(s)
      Taito Miura
    • Organizer
      16th International Conference on Alkali-Aggregate Reaction in Concrete
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ANISOTROPY OF ALKALI-SILICA REACTION FROM THE VIEWPOINT OF MECHANICS EVALUATED BY MESOSCALE DISCRETE ANALYSIS2022

    • Author(s)
      Taito Miura
    • Organizer
      3rd International Conference on Concrete and Steel Technology, Engineering and Design
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 名古屋大学研究者総覧

    • URL

      https://profs.provost.nagoya-u.ac.jp/html/100007041_ja.html

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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