• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Evaluation techniques on corrosion resistance based on oxygen permeability

Research Project

Project/Area Number 19H02216
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 InstitutionEhime University

Principal Investigator

Kawaai Keiyu  愛媛大学, 理工学研究科(工学系), 准教授 (90725631)

Co-Investigator(Kenkyū-buntansha) 西田 孝弘  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, 主任研究官 (10345358)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords自己治癒 / 鋼材腐食 / 酸素拡散 / 律速条件 / 物理化学連成解析 / カソード反応 / マクロセル腐食 / 電気化学的計測 / 酸素透過 / 腐食抑制 / 好気性微生物 / ひび割れ補修 / 酸素拡散律速 / 電気化学 / 物理化学連成モデル / 酸素低減材 / カソード分極曲線 / 物質輸送 / 断面修復 / アルギン酸 / カソード防錆剤 / 物質輸送連成解析 / 酸素低減 / 酸素透過性 / 鉄筋腐食抵抗性 / 自己・自律治癒 / 電気抵抗率 / 好気性部生物 / 拡散律速 / 溶存酸素 / 酸素・pHイメージング / 腐食形態 / 電気化学特性
Outline of Research at the Start

本研究課題では、アルギン酸-微生物からなるバイオ補修材を用いてひび割れを閉塞しコンクリートの鋼材保護性能を向上させる補修効果の酸素透過性に基づく評価方法について検討する。特に、ひび割れを有するセメント硬化体中の環境(飽和度(含水率)、溶存酸素濃度分布、pH分布)が散布したグラウト材、ならびに埋設したカプセルを用いたひび割れ補修効果に与える影響を検討する。

Outline of Final Research Achievements

This study examined the self-healing efficiency associated with crack repair and corrosion resistance in cementitious mixtures. In particular, sealing effect of cracking, interactions between oxygen diffusion and corrosion reactions by mass transport analysis, and enhancement of corrosion resistance in patch repair method which was analyzed by electro-chemical measurements. In addition, long-term self-healing effect of self-healing materials using bio-degradable plastic was explored. And, numerical evaluation on the enhancement of corrosion resistance based on rate-determining mechanism associated with cathodic reactions was central to this study.

Academic Significance and Societal Importance of the Research Achievements

本研究の目的は、微生物代謝を用いた自律治癒によるひび割れ補修効果の持続性を評価することである。特に、微生物代謝に伴う溶存酸素濃度の低減による酸素透過の抑制がカソード反応における鉄筋腐食抵抗性に与える影響について長期曝露試験を通じて把握し,腐食抑制効果を説明可能な数値解析モデルを構築することである。本研究により,自己治癒材を用いたセメント硬化体を対象として鉄筋表面での酸素透過性と腐食抑制効果の連関を整理し、再劣化が懸念される断面修復工法において腐食反応の律速条件を踏まえた合理的な対策方法を実施するための有用な知見を提供できると考えている。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (18 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results) Book (2 results)

  • [Journal Article] Application of bio-based materials to crack and patch repair methods in concrete2022

    • Author(s)
      K.Kawaai, T.Nishida, A.Saito, T.Hayashi
    • Journal Title

      Construction and Building Materials

      Volume: 340 Pages: 127718-127718

    • DOI

      10.1016/j.conbuildmat.2022.127718

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 相対湿度の上昇に伴う水・酸素の供給が中性化よるマクロセル腐食に及ぼす影響2022

    • Author(s)
      深川 大輔, 河合 慶有, 西田 孝弘, 氏家 勲
    • Journal Title

      コンクリート構造物の補修,補強,アップグレード論文報告集

      Volume: 22

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] カソード分極試験における鋼材周囲の酸素濃度の変動と律速条件の関係2022

    • Author(s)
      平城清志, 河合慶有, 西田孝弘, 氏家勲
    • Journal Title

      コンクリート構造物の補修,補強,アップグレード論文報告集

      Volume: 22

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] INFLUENCING FACTORS AFFECTING SELF-HEALING EFFICIENCY IN CEMENTITIOUS MIXTURES2021

    • Author(s)
      河合慶有,井手昌彦
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 74 Issue: 1 Pages: 294-301

    • DOI

      10.14250/cement.74.294

    • NAID

      130008009154

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2021-03-31
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of copper slag fine aggregate on corrosion processes and behavior in reinforced concrete prism specimen2021

    • Author(s)
      Nevy Sandra, Keiyu Kawaai, Isao Ujike
    • Journal Title

      Construction and Building Materials

      Volume: 271 Pages: 121909-121909

    • DOI

      10.1016/j.conbuildmat.2020.121909

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Corrosion resistance of steel bars in mortar mixtures mixed with organic matter, microbial or other2019

    • Author(s)
      K. Kawaai, T. Nishida, A. Saito, I. Ujike, and S. Fujioka
    • Journal Title

      Cement and Concrete Research

      Volume: 124 Pages: 105822-105822

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Bio-based materials: crack repair and enhancement of corrosion resistance2022

    • Author(s)
      Keiyu Kawaai
    • Organizer
      International Conference on Civil and Mining Engineering
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 水分浸透と酸素透過を対象とした計測技術2022

    • Author(s)
      河合慶有
    • Organizer
      JCI-TC201A コンクリート構造物の劣化予測における学術研究の役割とその成果の活用に関する研究委員会報告会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 微生物を用いたひび割れ補修と腐食抑制2022

    • Author(s)
      河合慶有
    • Organizer
      独立行政法人日本学術振興会 レジリエントインフラのための次世代建設材料の創成R023委員会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Reduction Of Dissolved Oxygen In Minimizing Corrosion2021

    • Author(s)
      VENTANILLA, Mary Grace, ONGPENG, Jason, NISHIDA, Takahiro, KAWAAI, Keiyu
    • Organizer
      Acta Polytechnica CTU Proceedings
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 鋼材腐食抑制のための酸素低減型混和材の開発2021

    • Author(s)
      西田孝弘, 河合慶有, 齋藤淳, 大即信明
    • Organizer
      コンクリート構造物の補修,補強,アップグレード論文報告集
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Effect of Crack Repair by Bio-Based Materials Using Alginate and Bacillus Subtilis under Wet and Dry Environment Part-I2020

    • Author(s)
      K. Kawaai, T. Nishida, A. Saito
    • Organizer
      XV International Conference on Durability of Building Materials and Components. eBook of Proceedings
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Crack Repair by Bio-Based Materials Using Alginate and Bacillus Subtilis under Wet and Dry Environment Part-II2020

    • Author(s)
      T. Nishida, K. Kawaai, A. Saito
    • Organizer
      XV International Conference on Durability of Building Materials and Components. eBook of Proceedings
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] EFFECT OF DEGREE OF WATER SATURATION ON OXYGEN PERMEABILITY IN MORTAR SPECIMENS MIXED WITH AEROBIC MICROORGANISM (accepted)2020

    • Author(s)
      S. Sugitani, K. Kawaai, I. Ujike
    • Organizer
      The 4th International RILEM conference Microstructure Related Durability of Cementitious Composites
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of oxygen permeability on corrosion properties in mortar specimens mixed with bacillus subtilis2019

    • Author(s)
      S. Sugitani, K. Kawaai and I. Ujike
    • Organizer
      Concrete Solutions - 7th International Conference on Concrete Repair
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Water Saturation Degree on Oxygen Permeability in Mortar Specimens Mixed with Aerobic Microorganism of Bacillus Subtilis2019

    • Author(s)
      K. Kawaai and S. Sugitani
    • Organizer
      4th International Symposium on Concrete and Structures for Next Generation
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Book] 月刊コンクリートテクノ2020

    • Author(s)
      河合慶有, 西田孝弘, 齋藤淳(担当:共著)
    • Total Pages
      67
    • Publisher
      セメント新聞社
    • Related Report
      2020 Annual Research Report
  • [Book] 自己修復材料、 自己組織化、形状記憶材料の開発と応用事例2020

    • Author(s)
      河合慶有他58名
    • Total Pages
      446
    • Publisher
      情報技術協会
    • ISBN
      9784861047817
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi