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Development of biocementation technology for self-healing with selective and concentrative function

Research Project

Project/Area Number 21H01428
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22030:Geotechnical engineering-related
Research InstitutionUniversity of the Ryukyus

Principal Investigator

Matsubara Hitoshi  琉球大学, 工学部, 教授 (50414537)

Co-Investigator(Kenkyū-buntansha) 川崎 了  北海道大学, 工学研究院, 教授 (00304022)
椋木 俊文  熊本大学, 大学院先端科学研究部(工), 教授 (30423651)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2023: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2022: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2021: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Keywords岩内微生物 / バイオセメンテーション / 自己修復 / ナノX線CT / 反応拡散系 / シミュレーション / X線CT / SDDP地圏材料
Outline of Research at the Start

脆弱化した岩石を選択・集中的かつ自己組織的に修復できる技術の開発を指向し,土着の微生物相と岩石種および各種環境因子との関連性を明らかにすると共に,最適微生物相の動態を制御できる手法を開発する。具体的には,岩内微生物の嗜好性を考慮し,セルロース繊維材及び微弱電流を岩石に添加,供給することで,微生物の代謝反応を亀裂や孔隙部で活発化させる。また,微生物による構造修復ダイナミクスを最先端のナノX線CT技術によって解明することに加え,微生物の増殖,拡散,代謝,鉱化反応及び地下水流れ,電場を考慮できる数理モデルを構築し,岩石内部におけるバイオミネラリゼーションの状態を解析できるツールを提供する。

Outline of Final Research Achievements

This study aims to develop a technique for the self-organizational repair of deteriorated rocks. Field surveys revealed that microorganisms useful for soil stabilization possess relatively similar DNA sequences. Laboratory tests demonstrated that the introduction of microorganisms and fibrous materials to the targets allows for spatial control of carbonate precipitation, enabling selective and intensive repair. This effect was also successfully reproduced using the simulator developed for this study. Additionally, X-ray CT analysis enabled the acquisition of three-dimensional CT images of the solidified samples, capturing the destruction processes along with shear bands. The series of findings indicate the feasibility of self-organizing repair techniques of deteriorated rocks.

Academic Significance and Societal Importance of the Research Achievements

微生物を利用した地盤修復技術は国際的に多くの研究者が取り組んでいるが,微生物の代謝反応を特定の箇所に集中させてコントローラブルに修復する技術を実現した例は本研究以外に見あたらない。さらに,修復された試料を最新のナノX線CTで可視化し,そのメカニズムをシミュレーションで再現した例も他にない。これらの成果は微生物を用いた地盤改良技術に関する知見を大きく広げるものであることから,学術的な意義は極めて大きい。加えて,本研究で開発したシミュレーションモデルは,地盤修復ダイナミクスをコンピュータ上で予測することも可能にすることから,地盤の将来予測や防災の観点からも社会的に重要な意義を持つ。

Report

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

    (12 results)

All 2022

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

  • [Journal Article] The Development of MICP Simulation Technique Based on Reaction Diffusion System2022

    • Author(s)
      西村伊吹,松原仁
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 71 Issue: 1 Pages: 59-66

    • DOI

      10.2472/jsms.71.59

    • NAID

      130008143191

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2022-01-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Links Between Soils, Rocks and Microorganisms2022

    • Author(s)
      松原仁
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 71 Issue: 1 Pages: 126

    • DOI

      10.2472/jsms.71.126

    • NAID

      130008143182

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2022-01-15
    • Related Report
      2022 Annual Research Report
  • [Journal Article] Multi-scale integration simulation of microbially induced carbonate precipitation using reaction-diffusion and homogenization models2022

    • Author(s)
      Nishimura Ibuki, Matsubara Hitoshi
    • Journal Title

      Bulletin of Engineering Geology and the Environment

      Volume: 81 Issue: 11 Pages: 460-460

    • DOI

      10.1007/s10064-022-02957-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electricity-reaction-diffusion system for microbially induced carbonate precipitation2022

    • Author(s)
      Nishimura Ibuki, Matsubara Hitoshi
    • Journal Title

      Soils and Foundations

      Volume: 62 Issue: 5 Pages: 101217-101217

    • DOI

      10.1016/j.sandf.2022.101217

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 沖縄沿岸域における地盤固化を可能とする土着微生物の同定2022

    • Author(s)
      屋比久雄斗,松原仁
    • Journal Title

      第15回地盤改良シンポジウム論文集

      Volume: 2022 Pages: 525-530

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 露頭表層における藻類の炭酸塩析出現象に関するシミュレーション研究2022

    • Author(s)
      西村伊吹,松原仁
    • Journal Title

      第15回地盤改良シンポジウム論文集

      Volume: 2022 Pages: 207-212

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 光合成微生物を用いた砂質土の安定化2022

    • Author(s)
      上西遼,松原仁
    • Journal Title

      第15回地盤改良シンポジウム論文集

      Volume: 2022 Pages: 51-56

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Use of electrodeposition to realise the crack-healing and pore-filling of weathered rock: a small specimen case2022

    • Author(s)
      Hitoshi Matsubara and Kosumo Kamimura
    • Journal Title

      Soils and Foundations

      Volume: 62(1) Issue: 1 Pages: 101100-101100

    • DOI

      10.1016/j.sandf.2021.101100

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Mathematical and numerical modelling of biomediated soil improvement2022

    • Author(s)
      I. Nishimura and H. Matsubara
    • Organizer
      15th World Congress on Computation Mecchanics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mathematical and numerical modelling of photoautotrophic calcification on rock surface2022

    • Author(s)
      H. Matsubara and I. Nishimura
    • Organizer
      15th World Congress on Computation Mecchanics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] MICP現象に伴う土粒子の固着現象に関する解析的検討2022

    • Author(s)
      西村伊吹,松原仁
    • Organizer
      第57回地盤工学研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ナノX線CTを用いた微生物代謝による改良地盤材料の内部構造の可視化2022

    • Author(s)
      新山裕介,椋木俊文,坂本凌雅,羊嘉儀,松原仁,屋比久雄斗,駒都慎
    • Organizer
      令和3年度土木学会西部支部研究発表会
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-03-27  

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