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Accurate analysis of transport process of corrosive agents into concrete structures by micropore structural model

Research Project

Project/Area Number 17360203
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Civil engineering materials/Construction/Construction management
Research InstitutionNagaoka University of Technology

Principal Investigator

SHIMOMURA Takumi  Nagaoka University of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (40242002)

Co-Investigator(Kenkyū-buntansha) TANAKA Yasushi  Nagaoka University of Technology, Faculty of Engineering, Research Associate, 工学部, 助手 (40377221)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥12,000,000 (Direct Cost: ¥12,000,000)
Fiscal Year 2006: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2005: ¥9,600,000 (Direct Cost: ¥9,600,000)
Keywordsairborne salt / numerical simulation / surface chloride / surface coating / micropore structure / chloride attack / reinforcement corrosion / diffusion / 表面保護工法 / 気象条件 / 海象条件
Research Abstract

1) Airborne salt reaching on the surfaces of concrete structures could be successfully predicted by numerical transport analysis in which configuration of structure, geography around structure, weather condition and ocean condition are considered.
2) It was shown that averaged airborne salt in the time scale of week can be estimated by the numerical analysis in which averaged weather and ocean conditions are considered.
3) It was clarified by field measurement that airborne salt reaching on the surface of structures is less than that blown in the air.
4) The investigators developed a simple experimental system that simulates the developing process of surface chlorides of concrete subjected by rain and sunshine in the laboratory
5) Since diffusion coefficient of chloride ions in surface coating materials for concrete is very small, defects and deterioration of the coating materials themselves maybe significantly decreases their protecting ability. Average diffusion coefficient of surface coating systems including artificial defects were quantified by electrolytic permeability test. It was experimentally verified that average diffusion coefficient can be expressed as a function of degree of defect.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (24 results)

All 2007 2006 2005

All Journal Article (24 results)

  • [Journal Article] 構造物表面に到達する飛来塩分量の数値解析による予測2007

    • Author(s)
      山田文則, 細山田得三, 下村匠
    • Journal Title

      コンクリート工学年次論文集 29

      Pages: 1041-1046

    • NAID

      110009696902

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 飛来塩分の影響を受けるコンクリートの表面塩分に関する実験的検討2007

    • Author(s)
      山下寛生, 下村 匠, 山田文則
    • Journal Title

      コンクリート工学年次論文集 29

      Pages: 1011-1016

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Prediction of airborne salt reaching on surface of structures by numerical analysis2007

    • Author(s)
      Fuminori YAMADA, Tokuzo HOSOYAMADA Takumi SHIMOMURA
    • Journal Title

      Proceedings of the Japan Concrete Institute Vol.29(to be published)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Experimental study on surface chloride of concrete structures subjected to airborne salt2007

    • Author(s)
      Hiroo YAMASHITA, Takumi SHIMOMURA, Fuminori YAMADA
    • Journal Title

      Proceedings of the Japan Concrete Institute Vol.29(to be published)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 構造物表面に到達する飛来塩分量の数値解析による予測2007

    • Author(s)
      山田文則, 細山田得三, 下村 匠
    • Journal Title

      コンクリート工学年次論文集 29(印刷中)

    • NAID

      110009696902

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 飛来塩分の影響を受けるコンクリートの表面塩分に関する実験的検討2007

    • Author(s)
      山下寛生, 下村 匠, 山田文則
    • Journal Title

      コンクリート工学年次論文集 29(印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 構造物周辺における飛来塩分の輸送過程に関する数値解析と現地観測2006

    • Author(s)
      山田文則, 細山田得三, 下村 匠, 佐藤堅介
    • Journal Title

      コンクリート工学年次論文集 28・1

      Pages: 1001-1006

    • NAID

      110009696262

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] コンクリー卜用表面被覆材の欠陥が物質遮蔽性能に及ぼす影響2006

    • Author(s)
      小倉孝道, 山下寛生, 下村 匠
    • Journal Title

      コンクリート工学年次論文集 28・1

      Pages: 1661-1666

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of durability of concrete structures with surface coating materials2006

    • Author(s)
      T.Shimomura, K.Maruyama
    • Journal Title

      Proceedings of Kenji Sakata Symposium on Properties of Concrete

      Pages: 285-298

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] 構造物の各部位に付着する飛来塩分量に関する現地観測2006

    • Author(s)
      山田文則, 細山田得三, 下村 匠
    • Journal Title

      土木学会第61回年次学術講演会講演概要集

      Pages: 565-566

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Numerical analysis and field measurement of transport process of airborne salt around structures2006

    • Author(s)
      Fuminori YAMADA, Takumi SHIMOMURA, Tokuzo HOSOYAMADA, Kensuke SATOU
    • Journal Title

      Proceedings of the Japan Concrete Institute Vol.28, No.1

      Pages: 1001-1006

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of defects in surface coating for concrete on its permeability2006

    • Author(s)
      Takamichi OGURA, Hiroo YAMASHITA, Takumi SHIMOMURA
    • Journal Title

      Proceedings of the Japan Concrete Institute Vol.28, No.1

      Pages: 1661-1666

    • NAID

      110009696372

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Field measurement of airborne salt reaching various portion in structure2006

    • Author(s)
      Fuminori YAMADA, Tokuzo HOSOYAMADA Takumi SHIMOMURA
    • Journal Title

      Proceedings of the 61st JSCE annual conference

      Pages: 565-566

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] コンクリート用表面被覆材の欠陥が物質遮蔽性能に及ぼす影響2006

    • Author(s)
      小倉孝道, 山下寛生, 下村匠
    • Journal Title

      コンクリート工学年次論文集 28・1

      Pages: 1661-1666

    • NAID

      110009696372

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 構造物周辺における飛来塩分の輸送過程に関する数値解析と現地観測2006

    • Author(s)
      山田 文則, 細山田 得三, 下村 匠, 佐藤 堅介
    • Journal Title

      コンクリート工学年次論文集 28(掲載予定)

    • NAID

      110009696262

    • Related Report
      2005 Annual Research Report
  • [Journal Article] コンクリート用表面被覆材の欠陥が物質遮蔽性能に及ぼす影響2006

    • Author(s)
      小倉 孝道, 下村 匠
    • Journal Title

      コンクリート工学年次論文集 28(掲載予定)

    • NAID

      110009696372

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Evaluation of durability of concrete structures with surface coating materials2006

    • Author(s)
      T.Shimomura, K.Maruyama
    • Journal Title

      Proceedings of the Seventh CANMET/ACI International Conference on Durability of Concrete (掲載予定)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Evaluation of effectiveness of surface protecting materials for concrete by numerical analysis2005

    • Author(s)
      T.Shimomura
    • Journal Title

      Proceedings of the International Workshop on Durability of Reinforced Concrete under Combined Mechanical and Climatic Loads

      Pages: 153-160

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] コンクリート細孔組織中における液状水移動と水蒸気移動の分離評価2005

    • Author(s)
      香川雄治, 下村 匠
    • Journal Title

      土木学会第60回年次学術講演会講演概要集

      Pages: 537-538

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] コンクリート用被覆材および改質材による塩分遮蔽メカニズム2005

    • Author(s)
      池津和弘, 下村 匠
    • Journal Title

      コンクリート工学年次論文報告集 27・1

      Pages: 895-900

    • NAID

      110009695648

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 各種方法で求めたコンクリートの塩化物イオン拡散係数の比較2005

    • Author(s)
      小倉孝道, 池津和弘, 下村 匠
    • Journal Title

      土木学会第60回年次学術講演会講演概要集

      Pages: 379-380

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Individual measurement of transport of liquid water and vapor within concrete pore structure2005

    • Author(s)
      Yuji KAGAWA, Takumi SHIMOMURA
    • Journal Title

      Proceedings of the 60th JSCE annual conference

      Pages: 537-538

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Mechanism of chloride sheltering by surface coating material and impregnating material2005

    • Author(s)
      Kazuhiro IKEZU, Takumi SHIMOMURA
    • Journal Title

      Proceedings of the Japan Concrete Institute Vol.27, No.1

      Pages: 895-900

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Comparison of diffusion coefficient of chloride ions in concrete obtained by various methods2005

    • Author(s)
      T.Ogura, K.Ikezu, T.Shimomura
    • Journal Title

      Proceedings of the 60th JSCE annual conference

      Pages: 379-380

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary

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Published: 2005-04-01   Modified: 2016-04-21  

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