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Study on durability of FRP rods for reinforcement for concrete

Research Project

Project/Area Number 07405022
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionUniversity of Tokyo

Principal Investigator

UOMOTO Taketo  Institute of Industrial Science Prof., 生産技術研究所, 教授 (80114396)

Co-Investigator(Kenkyū-buntansha) KATO Yoshitaka  Institute of Industrial Science Assistant Lecturer, 生産技術研究所・第5部, 助手 (80272516)
OHGA Hiroyuki  Tokyo Metropolitan university Associate Prof., 工学部, 助教授 (40152061)
YASUI Itaru  Institute of Industrial Science Prof., 生産技術研究所・第4部, 教授 (20011207)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥28,400,000 (Direct Cost: ¥28,400,000)
Fiscal Year 1996: ¥15,500,000 (Direct Cost: ¥15,500,000)
Fiscal Year 1995: ¥12,900,000 (Direct Cost: ¥12,900,000)
KeywordsFRP / Alkali degradation / Ultraviolet rays degradation / Fatigue / Creep / Exposure tests / 暴露 / 疲労特性 / 引張強度
Research Abstract

In this research, to utilize FRP rods for reinforcements for concrete more effectively, there are a lot of important properties which must be investigated. And main findings from these experimental results are as follows.
(1) Both CFRP and AFRP rods have high fatigue strength and the failure mean stress at 2 million cycles ranged from 1100 to 1200 MPa. And, GFRP rods have smaller fatigue strength compared with CFRP and AFRP rods, and the number of cycles changes when stress amplitude is varied.
(2) Each type of FRP rods has an unique creep failure behavior depending on degree of loading.
(3) Exposing the rods to several environmental conditions (inland and coastal area), the tensile strength of FRP rods is decreasing. And, ultraviolet rays must be one of the most important factor which influence the strength of AFRP rods.
(4) When FRP rods are utilized as reinforcements for concrete structure, they will be exposed to alkali environment for long time as they are surrounded by concrete. In this case, the most important problem is alkali. From accelerated test of FRP rods, we obtain that the tensile strength of GFRP rods is decreasing and GFRP rods are very sensitive to alkali environment due to the poor alkali resistance of glass fiber.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 勝木太,魚本健人: "アルカリ環境下におけるガラス繊維強化プラスチックロッドの耐久性評価" 土木学会論文集. No.544,V-32. 101-107 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 西村次男,魚本健人: "FRPロッドのクリープ破壊に関する基礎的研究" コンクリート工学年次論文報告集. Vol.17,No.1. 547-550 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 山口明伸,西村次男,魚本健人: "紫外線による各種繊維の劣化現象の評価方法に関する基礎研究" コンクリート工学年次論文報告集. Vol.18,No.1. 1161-1166 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 西村次男,魚本健人,加藤佳孝,勝木太: "異なった環境条件で暴露した各種FRPロッドの引張強度特性" コンクリート工学年次論文報告集. Vol.18,No.1. 1179-1184 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 魚本健人,西村次男,山口明伸,大賀宏行: "繊維補強プラスチックロッドの時間依存的特性の評価" 土木学会論文集. (投稿中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 勝木 太,魚本健人: "Predietion of Deterioration of Glass Fibers due to Alkali Attack" Proceeding of the Fifth East Asia-Pacific Conference on Stractural Engineering and Constraction. 3. 2245-2250 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 魚本健人,西村次男,大賀宏行: "Static and Fatigue Stregth of FRP Rods for Concrete Reinforcement" Non-Metalic Reinforcement for Concrete Structures Proceedings of the Second International RILEM Symposium. 106-107 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Uomoto, H.Ohga, T.Nishimura and T.yamaguchi: "Fatigue strength of FRP rods for concrete reinforcement" EASEC-5, Building for the 21st Century. Vol. 2. 1659-1664 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] F.Katsuki and T.Uomoto: "Prediction of deterioration of glass fibers due to alkali attack" EASEC-5, Building for the 21st Century. Vol. 3. 2245-2250 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Uomoto and H.Ohga: "Performance of fiber reinforced plastics for concrete reinforcement" Advanced Composite Materials in Bridges, and Structures. 125-132 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Uomoto, T.Nishimura and H.Ohga: "Static and Fatigue Strength of FRP Rods for Concrete Reinforcement" Non-Metallic (FRP) Reinforcement for Concrete Structures, E&FN SPON. 100-107 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] F.Katsuki and T.Uomoto: "Prediction of Deterioration of FRP Rods due to Alkali Attack" Non-Metallic (FRP) Reinforcement for Concrete Structures, E&FN SPON. 82-89 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Uomoto and F.Katsuki: "Integrated Design and Environmental" Deterioration Mechanism of Glass Fiber Reinforced Concrete in Concrete Technology, E&FN SPON,and Prediction of Strength Reduction. 137-146 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 勝木太.魚本健人: "アルカリ環境下におけるガラス繊維強化プラスチックロッドの耐久性評価" 土木学会論文集. No.544 U-32. 101-107 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村次男.魚本健人: "FRPロッドのクリープ破壊に関する基礎的研究" コンクリート工学年次論文報告集. Vol.17 No.1. 547-550 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 山口明伸.西村次男.魚本健人: "紫外線による各種繊維の劣化現象の評価方法に関する基礎研究" コンクリート工学年次論文報告集. Vol.18 No.1. 1161-1166 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村次男.魚本健人.加藤佳孝.勝木太: "異なった環境条件で暴露した各種FRPロッドの引張強度特性" コンクリート工学年次論文報告集. Vol.18 No.1. 1179-1184 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 大賀 宏行: "Fatigue Strengh of FRP Rods for Concrete Reinfovcement" Proceedings of the Fifth East Asia-Pacific Confereuce on Structuval Engineerly and Constvaction. 2. 1659-1664 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 魚本 健人: "Prediction of Deteviovation of Glass Fibovsdue to Aukali Attack" Proceeding of the Fifth East Acia-Pacific Confereuce on Structuval Engineerly and Constvaction. 3. 2245-2250 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 大賀 宏行: "Staticand Fatigue Streugth of FRP Rods for Coucvete Reinfovcement" Non-Metalllc Reuforcemant for Concrete Structures Procedings of the Second Iutervational RILEM Sympasium. 100-107 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 魚本 健人: "Prediction of Deterioration of FRP Rods due to Alkali Attack" Non-Metalllc Reuforcemant for Concrete Structures Procedings of the Second Intervational RILEM Symposium. 82-89 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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