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Properties of Reinforcing Steel Bar that is required at very low Temperature.

Research Project

Project/Area Number 01850106
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field コンクリート工学・土木材料・施工
Research InstitutionTohoku Univ.

Principal Investigator

MIURA Takashi  Tohoku Univ. Dept. Civil Engineering, Prof., 工学部, 教授 (90005512)

Co-Investigator(Kenkyū-buntansha) SAITHO Yutaka  Tohoku Denryoku K. K., General Research Center, Researcher, 電力技術研究所, 研究員
UJI-IE Hisayoshi  Tohoku Denryoku K. K., General Research Center, Head of the Concrete Dept., 電力技術研究所, 室長
季 道憲  東北大学, 工学部, 助手
ITABSHI Hirofusa  Tohoku Univ. Dept. Civil Engineering, Assoc. Research, 工学部, 助手 (80142206)
HORI Muneo  Tohoku Univ. Dept. Civil Engineering, Lect., 工学部, 講師 (00219205)
LEE Do Heun  Tohoku Univ. Dept. Civil Engineering, Assoc. Research
李 道憲  東北大学, 工学部, 助手
斉藤 裕  東北電力総合研究所, 研究員
コバッチ フェレンス  東北大学, 工学部, 助手 (20215205)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥10,500,000 (Direct Cost: ¥10,500,000)
Fiscal Year 1991: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1990: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1989: ¥6,300,000 (Direct Cost: ¥6,300,000)
KeywordsVery Low Temp / Reinforced Concrete / Reinforcing Bar / Shock / Low-Temp. Brittleness
Research Abstract

At very low temperatures concrete becomes stronger and harder than at ordinary temperature, so that when cracking occurs in the tension region of a reinforced concrete member it causes a great impact. On the other hand, since reinforcing steel bars also become more brittlear very low temeratures, it also sometimes occurs that the impact causes the failure of reinforcing bars the concrete members, especially at the bended parts of reinforcement. From the study it can be concluded as follows.
1. At very low temperatures concrete splits with a much bigger impact than at normal temperatures.
2. The strain and straining rate of the reinforcement due to the impact caused by the splitting of concrete are influenced by the radius of bending, the reinforcement ratio and so on.
3. The possibility of brittle failure of a reinforcing bar depends on the properties of the bar at that state, that is, on the kind of reinforcing bar, on the amount of could working, and so on.
4. When we design a reinforced concrete structure which is to be used at very low temperatures, it is necessary to take into consideration the impact resistibility of the reinforcement applied and make the limit of degree of cold working.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Takashi Miura: "The Properties of Concrete at Very Low Temperatures" RILEM,Materials and Structures. 22. 243-254 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 遠藤 正文,三浦 尚,堀 宗朗: "低温下で使用される鉄筋の耐衝撃性に関する研究" 平成2年度 東北支部技術研究発表会講演概要. 466-467 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 早川 博之,三浦 尚,堀 宗朗: "極低温下においてコンクリ-ト破断時の衝撃が鉄筋に及ぼす影響" 平成2年度 東北支部技術研究発表会講演概要. 468-469 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 三浦 尚,瀬戸 謙一郎: "極低温下における鉄筋の耐衝撃性に関する研究" コンクリ-ト工学年次論文報告集. 14. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Takashi, Miura: "The Properties of Concrete at Very Low Temperatures" RILEM, Materials and Structures. 22-No. 13. 243-254 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Masafumi Endou, Takashi Miura, Muneo Hori: "Impact Resistibility of the Reinforcement that is used at Low Temperature" Proceeding of Technology and Research at Tohoku Branch of JSCE.466-467 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Hiroyuki Hayakawa, Takashi Miura, Muneo Hori: "Influence of the Shock of Concrete Cracking on the Behavior of Reinforcement at Very Low Temperatures" Proceeding of Technology and Research at Tohoku Branch of JSCE.468-469 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Takashi Miura, Kenichirou Seto: "Impact Resistibility of the Reinforcement at Very Low Temperature" Proceedings of the JCI.14. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Takashi Miura: "The Properties of Concrete at Very Low Temperatures" RILME、Materials and Structures. 22. 243-254 (1989)

    • Related Report
      1991 Annual Research Report
  • [Publications] 遠藤 正文,三浦 尚,堀 宗朗: "低温下で使用される鉄筋の耐衝撃性に関する研究" 平成2年度東北支部技術研究発表会講演概要. 466-467 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 早川 博之,三浦 尚,堀 宗朗: "極低温下においてコンクリ-ト破断時の衝撃が鉄筋に及ぼす影響" 平成2年度東北支部技術研究発表会講演概要. 468-469 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 三浦 尚,瀬戸 謙一郎: "極低温下における鉄筋の耐衝撃性に関する研究" コンクリ-ト工学年次論文報告集. 14. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 遠藤 正文: "低温下で使用される鉄筋の耐衝撃性に関する研究" 土木学会東北支部技術研究発表会講演概要. 466-467 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 早川 博之: "極低温下においてコンクリ-ト破断時の衝撃が鉄筋に及ぼす影響" 土木学会東北支部技術研究発表会講演概要. 468-469 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Takashi Miura: "The Properties of Concrete at Very Low Temperatures." RILEM Materials and Structures. 22ー130. 243-254 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2019-02-15  

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