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Research on the durability estimation technique by the quantification of concrete deterioration

Research Project

Project/Area Number 17560412
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Civil engineering materials/Construction/Construction management
Research InstitutionTohoku Gakuin University

Principal Investigator

TAKEDA Mitsuhiro  Tohoku Gakuin University, Faculty of Engineering, Associate professor, 工学部, 助教授 (10265184)

Co-Investigator(Kenkyū-buntansha) OTSUKA Koji  Tohoku Gakuin University, Faculty of Engineering, Professor, 工学部, 教授 (10048803)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2006: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2005: ¥2,500,000 (Direct Cost: ¥2,500,000)
KeywordsX-ray technique / Estimate of concrete strength / Quantification of degradation / Contrast medium / Freezing and thawing action / X線造影撮影法 / マイクロクラック / 空隙率 / 凍結融解抵抗性の推定 / コンクリート強度の推定
Research Abstract

The purpose of this study is to develop a method for strength, quantification of concrete degradation and evaluation of freeze-thaw resistance using X-ray technique with contrast medium. In order to estimate the strength of the concrete, the concrete specimen from which the water cement ratio differed was produced, and the relationship between the transit dose and compression strength obtained by X-ray technique with contrast medium were required. In this experiment, a test using non-air entrained concrete and mortar was also carried out as a comparison material. And, an experiment was similarly carried out for the concrete in which the dynamic elastic modulus was made to change by the freezing and thawing action. As a result of the experiment, the estimation of each strength and relative dynamic elastic modulus of deteriorated air entrained concrete became possible by measuring the transit dose by X-ray technique with contrast medium for mortar, concrete and air entrained concrete. In order to estimate the deterioration of the concrete, the X-ray technique with contrast medium was carried out for AE concrete specimens in which fine cracks had occurred by a freezing and thawing action. Detection of fine cracks in this AE concrete specimens and the quantification of the concrete degradation was carried out. Next, the same method was carried out for specimens of mortar, Non-AE concrete and AE concrete, to examine the relationship between the radioparency dosage and the resistance to freezing and thawing. In addition, this method was carried out for the structure to quantify the concrete degradation and to evaluate the freeze-thaw resistance. Result of this study, the strength of concrete and quantification of concrete degradation are able to estimate by X-ray technique with contrast medium. These are big result.

Report

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

    (10 results)

All 2007 2006

All Journal Article (10 results)

  • [Journal Article] X線造影撮影法を用いたコンクリート実構造物の定量的劣化診断に関する実験的研究2007

    • Author(s)
      石塚嗣人, 武田三弘, 大塚浩司, 菅井貴洋
    • Journal Title

      土木学会東北支部技術研究発表会講演概要集 V-12

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] X線造影撮影法を用いたコンクリート実構造物の定量的劣化診断に関する実験的研究2007

    • Author(s)
      斉藤広忠, 大塚浩司, 武田三弘, 菅井貴洋
    • Journal Title

      土木学会東北支部技術研究発表会講演概要集 V-12

    • Related Report
      2006 Annual Research Report
  • [Journal Article] X線造影撮影によるコンクリート強度の推定2006

    • Author(s)
      武田三弘, 大塚浩司
    • Journal Title

      土木学会論文集 Vol.62, No.2

      Pages: 376-384

    • NAID

      10019322472

    • 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] X線造影撮影によるコンクリート劣化の数値化と凍結融解抵抗性の判定2006

    • Author(s)
      武田三弘, 大塚浩司
    • Journal Title

      土木学会論文集 Vol. 62, No. 4

      Pages: 728-738

    • NAID

      10019326603

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] X線造影撮影法によるコンクリート実構造物の劣化度評価2006

    • Author(s)
      斉藤広忠, 大塚浩司, 武田三弘
    • Journal Title

      土木学会東北支部技術研究発表会講演概要集 第V部門

      Pages: 766-767

    • 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] X線造影撮影法によるコンクリート実構造物の強度評価に関する実験的研究2006

    • Author(s)
      斉藤広忠, 大塚浩司, 武田三弘, 菅井貴洋
    • Journal Title

      土木学会第61回年次学術講演会講演概要集 部門4 V-565

      Pages: 1125-1126

    • 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] ESTIMATION OF CONCRETE STRENGTH BY X-RAY TECHNIQUE WITH CONTRAST MEDIUM2006

    • Author(s)
      Mitsuhiro TAKEDA, Koji OTSUKA
    • Journal Title

      Japan society of civil engineer Vol.62, No.2

      Pages: 376-384

    • NAID

      10019322472

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] QUANTIFICATION OF CONCRETE DEGRADATION AND EVALUATION OF FREEZE-THAW RESISTANCE USING X-RAY TECHNIQUE WITH CONTRAST MEDIUM2006

    • Author(s)
      Mitsuhiro TAKEDA, Koji OTSUKA
    • Journal Title

      Japan society of civil engineer Vol.62, No.4

      Pages: 728-738

    • NAID

      10019326603

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] X線造影撮影によるコンクリート劣化の数値化と凍結融解抵抗性の判定2006

    • Author(s)
      武田三弘, 大塚浩司
    • Journal Title

      土木学会論文集 Vol.62, No.4

      Pages: 728-738

    • NAID

      10019326603

    • Related Report
      2006 Annual Research Report
  • [Journal Article] X線造影撮影法によるコンクリート実構造物の劣化度評価2006

    • Author(s)
      斉藤 広忠
    • Journal Title

      土木学会東北支部技術研究発表会講演概要集 第V部門

      Pages: 766-767

    • Related Report
      2005 Annual Research Report

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

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