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Repair of Chloride deterioratron of Concrete Structures by Electro-Chemical Chloride removal

Research Project

Project/Area Number 05555123
Research Category

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

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

Principal Investigator

FUJII Manabu  Kyoto u., Faculty of Eng., Professor, 工学部, 教授 (30031074)

Co-Investigator(Kenkyū-buntansha) KOBAYASHI Kazuo  Osaka Inst.Tech., Faculty of Eng., Proffessor., 工学部, 教授 (10021586)
KAWAHIGASHI Tatsuo  Kinki U., Faculty of Environmental Science Research Assoc., 環境科学研究所, 助手 (10140310)
INOUE Susumu  Osaka Inst.Tech, Faculty of Eng., Assoc.Prof., 工学部, 助教授 (30168447)
HATTORI Atsushi  Kyoto U., Faculty of Eng., Research Assoc., 工学部, 助手 (30243067)
MIYAGAWA Toyoaki  Kyoto U., Faculty of Eng., Assoc.Prof., 工学部, 助教授 (80093318)
高木 宣章  立命館大学, 理工学部, 助手 (50154753)
尼崎 省二  立命館大学, 理工学部, 教授 (60066743)
矢村 潔  摂南大学, 工学部, 教授 (30026257)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥19,900,000 (Direct Cost: ¥19,900,000)
Fiscal Year 1995: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1994: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1993: ¥12,500,000 (Direct Cost: ¥12,500,000)
KeywordsDesalination / Chloride Ion / Beam / Flexral Failure / Shear Failure / Wrap splice / Bond Strength / 電気化学的塩化物除去 / 塩害 / コンクリート構造物 / アルカリ金属イオン / 付着 / 鉄筋 / 最大付着応力度
Research Abstract

In this study, influence of desalination on load carrying behavior of reinforced concrete beam was investigated. Main results obtained from this study are as follows :
(1) Flexural load bearing capacity of the beam, which was designed to fail in flexural mode with shear reinforcement arranged and the concrete of which included chloride ion 8.0kg/m^3 did not affected by eight weeks desalination treatment, although deflection at maximum load was enlarged.
(2) Strength and deflection of the beam which was designed to fail in shear failure without shear reinforcement significantly increased by eight weeks desalination treatment. This may be caused by degradation of bond strength between concrete and steel bar due to desalination and consequently ideal tide arch mechanism was initiated.
(3) The beam with wrap splice showed decrease in strength with eight weeks desalination application.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (2 results)

All Other

All Publications (2 results)

  • [Publications] 上田隆雄、宮川豊章、藤井学、芦田公伸: "デザリネーションが鉄筋の付着挙動に与える影響" コンクリート工学年次論文報告集. 16. 1007-1012 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Takao Ueda, Atsushi Hattori, Susumu Ioue, Toyoaki Miyagawa, Manabu Fujii, Masanobu Ashida: "Influence of Desalination on Bond Beharior between Conctote and Beinoforcing Stool" Proc. of Intl. Conf. on Concrete ander Severed Conditions. 625-634 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary

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Published: 1993-04-01   Modified: 2016-04-21  

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