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Development of Hybrid Fiber Reinforced Cementitious Composites and their Structural Application

Research Project

Project/Area Number 12555157
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Building structures/materials
Research InstitutionTohoku University

Principal Investigator

MIHASHI Hirozo  Tohoku Univ., Graduate School of Eng., Prof., 大学院・工学研究科, 教授 (90091751)

Co-Investigator(Kenkyū-buntansha) OTSUKA Koji  Tohoku Gakuin Univ., School of Eng., Prof., 工学部, 教授 (10048803)
KIRIKOSI Kazuki  Tohoku Univ., School of Eng., Research Eng., 工学部, 教務職員 (60240660)
KANEKO Yoshio  Tohoku Univ., Graduate School of Eng., Assoc. Prof., 大学院・工学研究科, 助教授 (60312617)
ISHIHARA Seiichiro  Asanumagumi Co., Res. Inst., Chief Eng., 技術研究所・建築構法研究室, 課長(研究職)
FUKUYAMA Hiroshi  Building Research Institute, Department of Structural Engineering, Chief Research Engineer, 構造研究グループ, 上席研究員
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥13,300,000 (Direct Cost: ¥13,300,000)
Fiscal Year 2002: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2001: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2000: ¥8,900,000 (Direct Cost: ¥8,900,000)
KeywordsCementitious Composite / Hybrid Composite / Steel Cord / Polymeric fiber / High Ductility / Energy Absorption / Bond Cracking / Shear Failure / ハイブリッド複合材 / 繊維補強 / 高靭性化 / スナッビング
Research Abstract

New type of fiber reinforced cementitious composites were developed, in which not only high performance polymeric fibers but also steel cord were mixed together. That is Hybrid Fiber Reinforced Cementitious Composites (HFRCC). These new materials achieve multiple cracking of so thin width that the composites are possessed of high strength, strain hardening and high ductility. The summary of the results are as follows :
1). Mix proportion of HFRCC was studied to produce the highly ductile composites. Examined parameters were the length and volume contents of fibers, and the combination. Not only the mechanical performance but also the workability was investigated.
2) A series of a uniaxial tension test was carried out on a deformed bar embedded in the newly developed HFRCC. Microcracking around the deformed bar was carefully observed by means of a unique method of X-ray technique. Macroscopic bond behavior was also studied to find a much more obvious tension stiffening effect than that observed in plain concrete. Even after yielding of the steel bar, HFRCC still resisted the load so that the total strength capacity is much higher than the yield strength.
3) HFRCC beams reinforced with deformed bars were tested under a type of shear loading. Influences of type of fibers and also stirrups ware examined. Cracking process was carefully observed by means of the X-ray technique to discuss the fracture mechanism.
4) Column-type members made with reinforced HFRCC were tested under cyclic loading to examine the energy absorption capacity and also numerically analyzed by means of a nonlinear FEM. Tapered members with X-shaped reinforcement showed very good results from the view point of the ductility and the damage level of cracking even after a large deformation. It proved that the tapered members with X-shaped reinforcement can be practically applied as energy absorbers.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 川又 篤: "ハイブリッド型繊維補強セメント系複合材料の靭性能に関する研究"コンクリート工学年次論文集. Vol.23,No.2. 235-240 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 清田 雅量: "セメント系複合材料における繊維の付着特性に関する基礎的研究"コンクリート工学年次論文集. Vol.23,No.2. 187-192 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 和地 正浩: "ハイブリッド型繊維補強セメント系複合材料におけるコード繊維の付着特性に関する研究"コンクリート工学年次論文集. Vol.23,No.2. 229-234 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Mihashi: "Development of Hybrid Fiber Reinforced Cementitious Composites"Proc.of fib 2002 OSAKA. (CD-ROM). S7-52 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A.Kawamata: "Material Design of Hybrid Fiber Reinforced Cementitious Composites"Proc.JCI Int.Workshop on Ductile Fiber Reinforced Cementitious Composites. 85-94 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Otsuka: "Observation of Multiple Cracking on Micro and Meso Level"Proc.JCI Int.Workshop on Ductile Fiber Reinforced Cementitious Composites. 189-198 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A. Kawamata, H. Mihashi, Y. Kaneko, H. Fukuyama: "Ductility of Hybrid Fiber Reinforced Cementitious Composites"Proc. of the Japan Concrete Inst.. Vol.23, No.2. 235-240 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Kiyota, H. Mihashi, T. Kanda, A. Kawamata: "Bond Property of Fiber in Cementitious Composites Bond"Proc. of the Japan Concrete Inst.. Vol.23, No.2. 187-192 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Wachi, H. Mihashi, Y. Kaneko, A. Kawamata: "Bond Property of Cord Fiber in Hybrid Fiber Reinforced Cementitious Composites"Proc. of the Japan Concrete Inst.. Vol.23, No.2. 229-234 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H. Mihashi, A. Kawamata, Y. Kaneko, H. Fukuyama: "Development of Hybrid Fiber Reinforced Cementious Composite"Proc. Of fib 2002 OSAKA. S7-52(CD-ROM). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A. Kawamata, H. Mihashi, H. Fukuyama: Proc. JCI International Workshop on Ductile Fiber Reinforced Cementitious Composites (DFRCC). 85-94 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Otsuka, H. Mihashi, M. Kiyota, S. Mori: Proc. JCI International Workshop on Ductile Fiber Reinforced Cementitious Composites (DFRCC). 189-198 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Mihashi: "Development of Hybrid Fiber Reinforced Cementitious Composites"Proc. of fib 2002 OSAKA. CD-ROM. (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] A.Kawamata: "Material Design of Hybrid Fiber Reinforced Cementitious Composites"Proc. JCI Int. Wokshop on Ductile Fiber Reinforced Cementitious Composites. 85-94 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Otsuka: "Observation of Multiple Cracking on Micro and Meso Level"Proc.JCI Int. Workshop on Ductile Fiber Reinforced Cementitious Composites. 189-198 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Mihashi: "Multiscale Approach for Development of High Performance Cementitious Composite Materials"International Symposium on Advances in Building Technology. CD-ROM. (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 金指 成昭: "RC片持ち梁のせん断補強による拘束効果に関する数値解析的研究"日本建築学会大会学術講演梗概集(北陸). C-2、構造. 23-24 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 川又 篤: "ハイブリッド型繊維補強セメント系複合材料の靭性能に関する研究"コンクリート工学年次論文集. Vol.23, No.2. 235-240 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 清田 雅量: "セメント系複合材料における繊維の付着特性に関する基礎的研究"コンクリート工学年次論文集. Vol.23, No.2. 187-192 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 和地 正浩: "ハイブリッド型繊維補強セメント系複合材料におけるコード繊維の付着特性に関する研究"コンクリート工学年次論文集. Vol.23, No.2. 229-234 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 清田 雅量: "繊維補強セメント系複合材料における付着特性に関する基礎的研究"日本建築学会東北支部研究報告集 構造系. 第64号. 149-152 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 和地 正浩: "ハイブリッド型繊維補強セメント系複合材料におけるコード繊維の引き抜き特性に関する研究"日本建築学会東北支部研究報告集 構造系. 第64号. 145-148 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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