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Evaluation of microstructural damage and estimation of expansion attained to date due to internal swelling reaction of concrete

Research Project

Project/Area Number 20H02227
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 InstitutionNational Institute of Maritime, Port and Aviation Technology

Principal Investigator

Kawabata Yuichiro  国立研究開発法人海上・港湾・航空技術研究所, 港湾空港技術研究所, グループ長 (10508625)

Co-Investigator(Kenkyū-buntansha) 川野 秀一  九州大学, 数理学研究院, 教授 (50611448)
小西 敏功  地方独立行政法人東京都立産業技術研究センター, 技術支援本部地域技術支援部城南支所, 副主任研究員 (10587843)
渡邊 禎之  地方独立行政法人東京都立産業技術研究センター, 事業化支援本部技術開発支援部計測分析技術グループ, 上席研究員 (70463065)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2020: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywordsコンクリート / 内部膨張藩王 / 統計解析 / 微細構造分析 / 内部膨張反応
Outline of Research at the Start

コンクリートの内部膨張反応は構造物のひび割れ発生や性能低下を招くため,その適切な維持管理は重要な課題である。近年の研究の進展で,コンクリートの膨張予測技術等は飛躍的に進展した。一方,劣化が生じたコンクリートでの過去の膨張履歴の推定は未だ研究途上段階である。
コンクリートの膨張履歴の推定には,微細領域で生じる損傷(微細損傷)を広域で評価する手法とそれを陽に考慮したモデルが必要である。
そこで本研究は,コンクリートの内部膨張反応による膨張履歴を推定するため,広域で微細損傷を定量評価できる手法を確立するとともに,そのデータから膨張履歴を推定する手法を構築することを目的としている。

Outline of Final Research Achievements

A method for evaluating micro-damage in a wide area, using a montage image created with 500-900 backscattered electron images, was investigated. In particular, an evaluation method using a spatio-temporal statistical analysis model was devised, and its applicability to internal swelling reactions was examined. In addition, an expansion model in which micro-damage was taken into account was investigated to reproduce the expansion behavior of concrete subjected to temperature variation. Furthermore, as a method for estimating the expansion history of concrete, the relationship between micro-damage features and the expansion to date was compared. As a result, it was shown that it is possible to estimate the expansion to date by determining the total crack length in a certain angular region.

Academic Significance and Societal Importance of the Research Achievements

本研究はコンクリートに生じる微細領域の損傷(ひび割れ等)について,広域で評価し,その時空間情報をモデル化することでコンクリートの膨張履歴を推定することを目標として検討を行ったものである。本成果は内部膨張反応で劣化したコンクリート構造物における過去の膨張履歴を推定する上で工学的に有用であり,また従来の膨張率と異なる指標を活用したより高度な評価手法への足掛かりになるものと考える。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (14 results)

All 2023 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

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

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Cambridge(英国)

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

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Universite de Toulouse/Universite Gustave Eiffel(フランス)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] PILOT STUDY ON THE INFLUENCE OF HIGH ALKALI CONTENT COAL GASIFICATION SLAG FINE AGGREGATE ON ALKALI SILICA REACTION2023

    • Author(s)
      IGARASHI Go、KAWABATA Yuichiro、MATSUURA Tadataka、ISHIDA Tetsuya
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 76 Issue: 1 Pages: 238-244

    • DOI

      10.14250/cement.76.238

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2023-03-31
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Environmental impacts on expansion of concrete due to alkali?silica reaction2022

    • Author(s)
      Kawabata Yuichiro、Yamada Kazuo、Kawakami Takashi、Sagawa Yasutaka
    • Journal Title

      Magazine of Concrete Research

      Volume: 2200158 Issue: 14 Pages: 1-11

    • DOI

      10.1680/jmacr.22.00158

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of temperature on expansion of concrete due to the alkali-silica reaction: A simplified numerical approach2022

    • Author(s)
      Kawabata Y.、Dunant C.、Nakamura S.、Yamada K.、Kawakami T.
    • Journal Title

      Materiales de Construcci?n

      Volume: 72 Issue: 346 Pages: e282-e282

    • DOI

      10.3989/mc.2022.17121

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Investigation of the mechanical behaviour of concrete with severe delayed ettringite formation expansion focusing on internal damage propagation under various compressive loading patterns2022

    • Author(s)
      Joshi Nirmal Raj、Matsumoto Ayumu、Asamoto Shingo、Miura Taito、Kawabata Yuichiro
    • Journal Title

      Cement and Concrete Composites

      Volume: 128 Pages: 104433-104433

    • DOI

      10.1016/j.cemconcomp.2022.104433

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The long-term suppression effects of fly ash and slag on the expansion of heat-cured mortar due to delayed ettringite formation2021

    • Author(s)
      Kawabata Yuichiro、Takahashi Haruka、Watanabe Sadayuki
    • Journal Title

      Construction and Building Materials

      Volume: 310 Pages: 125235-125235

    • DOI

      10.1016/j.conbuildmat.2021.125235

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Petrological assessment of drying shrinkage of sedimentary rock used as aggregates for concrete2021

    • Author(s)
      Kawabata Yuichiro、Yahata Masahiro、Hirono Shinichi
    • Journal Title

      Materials & Design

      Volume: 209 Pages: 109922-109922

    • DOI

      10.1016/j.matdes.2021.109922

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] DEF膨張が生じたコンクリートの圧縮応力下での内部損傷進行の検討2021

    • Author(s)
      松本歩、Nirmal Raj Joshi、浅本晋吾、川端雄一郎
    • Journal Title

      コンクリート工学年次論文集

      Volume: 43 Pages: 227-232

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] セメントコンクリートを「科学」する―遅延エトリンガイト生成(DEF)―2021

    • Author(s)
      川端雄一郎
    • Journal Title

      セメント・コンクリート

      Volume: 892 Pages: 44-48

    • NAID

      40022626718

    • Related Report
      2021 Annual Research Report
  • [Presentation] Environmental impacts on ASR expansions -modeling, field exposure and alkali-wrapped concrete prism test2022

    • Author(s)
      Y. Kawabata, K. Yamada, S. Ogawa and Y. Sagawa
    • Organizer
      6th International Conference on Alkali-Aggregate Reactions in Concrete
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of temperature on expansion due to alkali-silica reaction and numerical modeling2022

    • Author(s)
      Y. Kawabata, C. Dunant, K. Yamada and T. Kawakami
    • Organizer
      6th International Conference on Alkali-Aggregate Reactions in Concrete
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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