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Quantitative Estimate of Moisture Content and Volume Change of Hardened Cement Paste Exposed at Changing Thermal and Humidity Condition by using Neutron Radiography.

Research Project

Project/Area Number 26420434
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Civil engineering materials/Construction/Construction management
Research InstitutionIbaraki University

Principal Investigator

NUMAO TATSUYA  茨城大学, 工学部, 教授 (90164649)

Co-Investigator(Kenkyū-buntansha) 渡辺 健  公益財団法人鉄道総合技術研究所, その他部局等, 研究員 (40450746)
大野 又稔  公益財団法人鉄道総合技術研究所, その他部局等, 研究員(移行) (50649390)
齊藤 泰司  京都大学, 原子炉実験所, 教授 (40283684)
原田 隆郎  茨城大学, 工学部, 講師 (00241745)
Research Collaborator KIMURA Toru  
KUBO Miharu  
Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords中性子ラジオグラフィ / セメント硬化体 / 水分移動 / 体積変化 / 表面撮影
Outline of Final Research Achievements

Hardened cement paste (HCP) such as a concrete shrinks with dehydration or swells with hydration. This repeated shrinking and swelling of the HCP makes some cracks in the surface and affects the it's long-term durability. Therefore, it is important to characterize the moisture distribution inside HCP and the deformation associated with moisture movement.
On the other hand, the neutron radiography is a non-destructive visualization technique in which the attenuate characteristic caused by the interaction of the nucleus and the neutron when the neutron penetrates the material. Especially, it is suitable for the measurement of the moisture existence situation for hydrogen to show the action of strong absorption and scattering.
The purpose of this research is to discuss and to propose the quantitative relationship between the moisture content and volume change of the HCP specimen by the neutron radiography.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (7 results)

All 2016 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (6 results)

  • [Journal Article] 中性子準弾性散乱を利用したセメント硬化体の水和過程における結合水量の割合と圧縮強度および細孔径分布との関係2016

    • Author(s)
      当銘葵、沼尾達弥
    • Journal Title

      コンクリート工学年次論文集

      Volume: 38 Pages: 2205-2210

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 中性子ラジオグラフィを用いた多孔質材料内の含有水分量の定量化手法2015

    • Author(s)
      小沼遥佑,沼尾達弥、木村 亨,久保美春
    • Organizer
      土木学会
    • Place of Presentation
      岡山大学 津島キャンパス
    • Year and Date
      2015-09-16
    • Related Report
      2015 Research-status Report
  • [Presentation] 中性子準弾性散乱を利用したセメントの硬化過程における結合水の割合と細孔径分布の関係2015

    • Author(s)
      沼尾 達弥、当銘 葵、木村 亨、仲井 和之、中村 薫
    • Organizer
      土木学会
    • Place of Presentation
      岡山大学 津島キャンパス
    • Year and Date
      2015-09-16
    • Related Report
      2015 Research-status Report
  • [Presentation] 中性子準弾性散乱を利用したセメント硬化過程における結合水の割合と圧縮強度の関係2015

    • Author(s)
      当銘 葵、沼尾達弥、木村 亨
    • Organizer
      土木学会
    • Place of Presentation
      岡山大学 津島キャンパス
    • Year and Date
      2015-09-16
    • Related Report
      2015 Research-status Report
  • [Presentation] 中性子ラジオグラフィ画像を用いた含水量測定に及ぼす影響要因2014

    • Author(s)
      沼尾達弥、舟川勲、木村亨、久保美春
    • Organizer
      土木学会
    • Place of Presentation
      大阪大学 豊中キャンパス
    • Year and Date
      2014-09-10 – 2014-09-12
    • Related Report
      2014 Research-status Report
  • [Presentation] 中性子ラジオグラフィを用いたセメント硬化体中の含有水量の同定手法について2014

    • Author(s)
      久保美春、沼尾達弥、舟川勲、木村亨
    • Organizer
      土木学会
    • Place of Presentation
      大阪大学 豊中キャンパス
    • Year and Date
      2014-09-10 – 2014-09-12
    • Related Report
      2014 Research-status Report
  • [Presentation] 中性子ラジオグラフィを用いた水分測定に関する画像処理方法の提案2014

    • Author(s)
      沼尾達弥、舟川勲、木村亨、久保美春
    • Organizer
      土木学会
    • Place of Presentation
      大阪大学 豊中キャンパス
    • Year and Date
      2014-09-10 – 2014-09-12
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2019-03-29  

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