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Estimation method on causes of crack in concrete used buildings based on drying shrinkage strain by oven drying

Research Project

Project/Area Number 20560513
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Building structures/materials
Research InstitutionHokkaido University

Principal Investigator

HASEGAWA Takuya  Hokkaido University, 大学院・工学研究院, 准教授 (30360465)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsコンクリート / 乾燥収縮ひずみ / ひび割れ / 強制乾燥 / 仕上材 / 環境条件 / 乾燥収縮 / 屋外暴露 / レーザー変位計 / 炭酸化収縮 / 暴露試験
Research Abstract

In this study, it was estimated the standard drying shrinkage strain of concrete in existing RC buildings based on results of oven dry shrinkage test for the core test pieces. And we studied the estimation method on causes of crack in concrete of buildings. From these results, we proposed the methods as follows ;
(1)The testing methods of oven drying shrinkage stain from core test pieces
(2)The estimation methods on drying shrinkage stain considering finishing materials and environmental conditions
(3)The estimation methods on cases of crack in existing RC buildings based on (1) and (2)

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (7 results)

All 2011 2010 2009

All Journal Article (4 results) (of which Peer Reviewed: 3 results) Presentation (3 results)

  • [Journal Article] 乾燥開始後50ヶ月のデータに基づく仕上塗材・表面改質材を施工したコンクリートの乾燥収縮性状2011

    • Author(s)
      長谷川拓哉、千歩修
    • Journal Title

      日本コンクリート工学協会年次論文集 CD-ROM(採用決定)

      Pages: 33-1

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 乾燥指標体を用いたコンクリートの強制乾燥収縮試験の検討2010

    • Author(s)
      長谷川拓哉、千歩修
    • Journal Title

      日本コンクリート工学協会年次論文集 CD-ROM

      Pages: 32-1

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 乾燥指標体を用いたコンクリートの強制乾燥収縮試験の検討2010

    • Author(s)
      長谷川拓哉、千歩修
    • Journal Title

      日本コンクリート工学年次論文集

      Volume: 32-1(CD-ROM)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 札幌市における仕上材・表面改質材を施工したコンクリートの表層の温湿度変化2009

    • Author(s)
      長谷川拓哉
    • Journal Title

      日本建築仕上学会大会学術講演会研究発表論文集

      Pages: 139-142

    • Related Report
      2009 Annual Research Report
  • [Presentation] 強制乾燥収縮試験に適用できる試験体寸法および長さ変化率測定方法の検討2010

    • Author(s)
      長谷川拓哉、千歩修
    • Organizer
      第83回日本建築学会北海道支部研究発表会
    • Place of Presentation
      室蘭工業大学、室蘭
    • Year and Date
      2010-07-03
    • Related Report
      2010 Final Research Report
  • [Presentation] 強制乾燥収縮試験に適用できる試験体寸法および長さ変化率測定方法の検討2010

    • Author(s)
      長谷川拓哉、千歩修
    • Organizer
      日本建築学会北海道支部研究報告会
    • Place of Presentation
      室蘭工業大学、室蘭
    • Year and Date
      2010-07-03
    • Related Report
      2010 Annual Research Report
  • [Presentation] 札幌市における仕上材・表面改質材を施工したコンクリート表層の温湿度変化2009

    • Author(s)
      長谷川拓哉、千歩修
    • Organizer
      日本建築仕上学会学術講演会
    • Place of Presentation
      東京大学、東京
    • Year and Date
      2009-10-23
    • Related Report
      2010 Final Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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