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Diagnosis, Preservation and Strengthening System for Concrete Structures in Cold Region

Research Project

Project/Area Number 11450167
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

SAEKI Noboru  Hokkaido University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (80002004)

Co-Investigator(Kenkyū-buntansha) SAKURAI Hiroshi  Kitami Institute of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (80187088)
MIKAMI Takashi  Hokkaido University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (00002303)
HORIGUCHI Takashi  Hokkaido University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (30094816)
SATO Masashi  Hokkaido Development Bureau, Civil Engineering Research Institute, Head of Sturctural Engineering Section, 構造研究室, 室長(研究職)
SHOYA Masami  Hatinohe Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (80006684)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥9,200,000 (Direct Cost: ¥9,200,000)
Fiscal Year 2000: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1999: ¥6,100,000 (Direct Cost: ¥6,100,000)
KeywordsDiagnosis / Preservation / Strengthening / Thermal Analysis / Non-Destructive Test / Freeze-Thaw / 補修・補強 / ドリル / 掘削試験
Research Abstract

The purpose of this study is initiated to diagnose the situation and develop preservation and strengthening systems for concrete structures in cold region.
Actual structures were investigated to consider diagnosis method. Items in place assessment were visual inspection, velocity measurement of ultra sonic, non-destructive strength estimation by Schmidt hammer, depth of carbonation and thickness of cover concrete. The result of this investigation shows the deterioration of concrete structures is evaluated by these non-destructive tests.
Excavation test by the drill was carried out for the purpose of estimating the deterioration of depth direction. As the result, the power expressed by the product of drilling speed and the force showed high correlation with the concrete strength.
As predicted number of freeze-thaw cycles by thermal analysis corresponds to the strength of non-destructive tests, these tests will be able to apply for the prediction of service life, repairing and strengthening design.
Tests for permeability, chloride content, pH and strength are major test methods for the durability assessment. These tests form a system of the diagnosis for concrete structures.
The strengthening methods such as painting(surface coating), FRP sheet bonding and external cable are investigated and the effect of strengthening are evaluated, respectively.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 平田大輔: "コアボーリングによるコンクリート強度の推定"土木学会北海道支部論文報告集. 57. 918-921 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Hiroshi Sakurai: "Research of RC Structure Housing an Old Communication System for Northern Territory"Memoirs of The Kitami Institute of Technology. Vol.30No.2. 70-82 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 櫻井宏: "寒冷地コンクリート構造物の健全度とFEMによる性能評価に関する検討"土木学会北海道支部論文報告集. 56(A). 504-509 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 櫻井宏: "北方領土旧通信施設のコンクリート調査"土木学会北海道支部論文報告集. 56(A). 552-557 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 庄谷征美: "コンクリート表層部に着目した簡易透水試験法の開発に関する基礎的研究"土木学会論文集. No.627/V-44. 133-145 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 須藤敦史: "寒冷地道路トンネルの断熱材設計における気温変動の推定"土木学会論文集. No.616/VI-42. 103-110 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] D.Hirata: "Prediction of compressive Strength of Concrete by Using Core-boring"Proc.of Hokkaido Chapter of the JSCE. No.57. 918-921 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Sakurai: "Research of RC Structure Housing an Old Communication System for Northern Territory"Memoirs of The Kitami Institute of Technology. Vol.30, No.2. 70-82 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Sakurai: "Evaluation of Soundness Performance for Concrete Structure in Cold Region by Some Measurement and FEM"Proc.of Hokkaido Chapter of the JSCE. No.56(A). 504-509 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Sakurai: "Research on RC Structure of Old Communication System for Northern Territory"Proc.of Hokkaido Chapter of the JSCE. No.56(A). 552-557 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Shoya: "A Fundamental Study on Development of Rapid Water Permeability Test for Near-Surface Layer of Concrete"Journal of Materials, Concrete Structures and Pavements, JSCE. No.627/V-44. 133-145 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A.Sutoh: "Estimation of Design Temperature for Road Tunnel Heat Insulator"Journal of Materials, Concrete Structures and Pavements, JSCE. No.616/VI-42. 103-110 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 平田大輔: "コアボーリングによるコンクリート強度の推定"土木学会北海道支部論文報告集. 57. 918-921 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hiroshi Sakurai: "Research of RC Structure Housing an Old Communication System for Northern Territory"Memoirs of The Kitami Institute of Technology. Vol.30 No.2. 70-82 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 櫻井宏: "寒冷コンクリート構造物の健全度とFEMによる性能評価に関する検討"土木学会北海道支部論文報告集. 56(A). 504-509 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 櫻井宏: "北方領土旧通信施設のコンクリート調査"土木学会北海道支部論文報告集. 56(A). 552-557 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 庄谷征美: "コンクリート表層部に着目した簡易透水試験法の開発に関する基礎的研究"土木学会論文集. No.627/V-44. 133-145 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] 須藤敦史: "寒冷地道路トンネルの断熱材設計における気温変動の推定"土木学会論文集. No.616/VI-42. 103-110 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] 櫻 井 宏: "寒冷地コンクリート構造物の健全度とFEMによる性能評価に関する検討"土木学会北海道支部論文報告集. 56(A). 504-509 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 櫻 井 宏: "北方領土旧通信施設のコンクリート調査"土木学会北海道支部論文報告集. 56(A). 552-557 (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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