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Development of versatile deterioration prediction method of deteriorated concrete by chemical attack based on the deterioration mechanism of cement hydrates

Research Project

Project/Area Number 25889005
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Civil engineering materials/Construction/Construction management
Research InstitutionTohoku University

Principal Investigator

MIYAMOTO Shintaro  東北大学, 工学(系)研究科(研究院), 助教 (60709723)

Project Period (FY) 2013-08-30 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords化学的侵食 / 空隙構造 / 相組成 / 硫酸イオン / 塩化物イオン / 熱力学的相平衡 / 細孔構造 / エトリンガイト / ポルトランダイト / 溶脱 / セメント水和物 / 実行拡散係数 / 変質 / イオンの固定化
Outline of Final Research Achievements

For the prediction with a high degree of accuracy to the chemical deterioration of the hardened cement , it is necessary to consider the transform of the cement hydrates. Moreover, since the actual environment is complex, in order to construct a deterioration prediction model, it is necessary to consider the applicability of the model in various environments. In this study, it was discussed that the relationship between fluctuate the effective diffusion coefficient and the deterioration of the cement hydrates. In addition, it was discussed on the experimental and theoretical analytic that the transform of the cement hydrates in the environment of the coexistence of chloride ion and sulfate ion.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • Research Products

    (7 results)

All 2014 2013 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Acknowledgement Compliant: 1 results) Presentation (4 results)

  • [Journal Article] 硫酸イオンと塩化物イオンが共存する環境でのセメント水和物の変質に関する実験的および解析的検討2014

    • Author(s)
      関雄太,宮本慎太郎,皆川浩,久田真,早坂洋平
    • 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: 14 Pages: 385-392

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] DETERIORATION PREDICTION OF THE CONCRETE STRUCTURE EXPOSED TO ACTUAL ACID RIVER WATER BASED ON PHASE EQUILIBRIUM CALCULATION2014

    • Author(s)
      Shintaro MIYAMOTO, Hiroshi MINAGAWA, Makoto HISADA, Yoshifumi HOSOKAWA, Yohei HAYASAKA
    • Journal Title

      The Fourth International fib Congress 2014, Improving Performance of Concrete Structures Proceedings

      Volume: 4 Pages: 105-114

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 化学的侵食に伴うセメント水和物の変質および空隙構造の変化がセメント硬化体の実効拡散係数に及ぼす影響2013

    • Author(s)
      井坂恵実,宮本慎太郎,細川佳史,皆川浩,久田真
    • 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: 13 Pages: 49-56

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] 硫酸イオンおよび塩化物イオンの複合作用によるセメント水和物の変質挙動2014

    • Author(s)
      関雄太,宮本慎太郎,皆川浩,久田真,早坂洋平
    • Organizer
      土木学会 平成26年度全国大会 第69回年次学術講演会
    • Place of Presentation
      大阪大学豊中キャンパス(大阪府・豊中市)
    • Year and Date
      2014-09-10 – 2014-09-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] 硫酸および硫酸ナトリウムがセメント硬化体に作用したときの劣化性状の相違について2014

    • Author(s)
      井坂恵実,宮本慎太郎,久田真,細川佳史
    • Organizer
      第68回セメント技術大会
    • Place of Presentation
      東京
    • Related Report
      2013 Annual Research Report
  • [Presentation] 各種酸と水和物との化学的相互作用によるセメント硬化体の物質移動抵抗性の変化2013

    • Author(s)
      井坂恵実,宮本慎太郎,皆川浩,久田真,平尾宙,細川佳史
    • Organizer
      土木学会全国大会第68回年次学術講演会
    • Place of Presentation
      千葉
    • Related Report
      2013 Annual Research Report
  • [Presentation] セメント硬化体の硫酸塩劣化に及ぼす塩化物イオンの影響

    • Author(s)
      関雄太,宮本慎太郎,皆川浩,久田真,早坂洋平
    • Organizer
      土木学会東北支部技術研究発表会(平成25年度)
    • Place of Presentation
      青森
    • Related Report
      2013 Annual Research Report

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Published: 2013-09-12   Modified: 2019-07-29  

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