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Effect of Quality of Surface Layer of Concrete on Scaling Resistance

Research Project

Project/Area Number 11650593
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Building structures/materials
Research InstitutionHachinohe Institute of Technology

Principal Investigator

TSUKINAGA Yoichi  Hachinohe Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (60124898)

Co-Investigator(Kenkyū-buntansha) ABA Mirotu  Hachinohe Insitute of Technology, Faculty of Engineering, Assistant Professor, 工学部, 講師 (10295959)
SHOYA Masami  Hachinohe Institute of Technology, Faculty of Engineeiing, Professor, 工学部, 教授 (80006684)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1999: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsConcrete / Freezing and thawing action / Deicer salt / Scaling / Moisture content / Thermal shock / Pull-off test / Air-void character / 微小硬度 / プルオフ法 / 透過性
Research Abstract

(1) Mechanism of frost damage
The mechanism of frost damage of concrete was investigated from the reference. The mechanism of the scaling was put in order by 6 types. It thought that these mechanisms were compound actually, and that some of the mechanisms excelled in some case and that the scaling developed.
(2) Actual state of frost damage at the concrete structures
The actual state of frost damage of concrete at the Tohoku district was investigated by the questionnaire. Deterioration symptom, area, members, time, causes, and repair of the frost damage, and the spreading amount of deicer salts were considered.
(3) Effect of quality of surface layer of concrete on scaling resistance
It supposed that the thermal shock which occurs in case of the chloride operation influenced a scaling. Scaling resistance can be increased in securing to fixed value in the pore structure and the strength of the concrete surface. However, the fact that the influence of the water content is larger than the pore structure and the strength was confirmed.
(4) Scaling resistance of concrete containing various coarse aggregates
The scaling resistance of the concrete containing low-quality aggregates or fly ash artificial aggregates was improved when securing fixed water cement ratio and air content. However, scaling damage of concrete could not be estimated solely from the density and the moisture content of aggregates.
(5) Scaling resistance of steam-cured concrete
When mixing required air content in steam-cured concrete, the scaling amount decreased and even if various manufacturing conditions were changed, differences with remarkable scaling amount were not confirmed. Therefore, it supposed that to mix required air content was very important to secure the scaling resistance of steam-cured concrete.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] 月永洋一: "コンクリートのスケーリング発生過程における表層部コンクリートの歪み変化について"第54回セメント技術大会講演要旨. No.54. 196-197 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 仙木優悦: "塩化物の影響を受けるコンクリートのスケーリング劣化に関する研究"日本建築学会東北支部研究報告集. No.63. 25-28 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 庄谷征美: "塩化物の影響を受けるコンクリートのスケーリング発生過程における歪み挙動に関する2,3の検討"セメント・コンクリート論文集. No.54. 370-375 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.ABA: "Frost Susceptibility of Concrete Containing Low-Quality Coarse Aggregates"Transactions of the JCI. Vol.22. 203-210 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 月永洋一: "凍結防止剤の影響を受けるコンクリート製品のスケーリング抵抗性に関する研究"第55回セメント技術大会講演要旨. No.55. 142-143 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 庄谷征美: "高強度フライアッシュ人工骨材を用いたコンクリートのスケーリング抵抗性"第55回セメント技術大会講演要旨. No.55. 142-143 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 月永洋一: "凍結防止剤の影響を受けるコンクリート製品のスケーリング抵抗性に関する研究"セメント・コンクリート論文集. No.55. 438-443 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 月永洋一: "コンクリート製品の製造条件によるスケーリング抵抗性に関する研究"第55回セメント技術大会講演要旨. No.56(印刷中). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Tsukinaga: "Strain Changes during Scaling Process of Concrete Exposed to Deicing Salts"Extended Abstracts ; The 54^<th> Annual Meeting of JCA. 196-197 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Senboku: "Study on the concerned with the scaling resistance of concrete exposed deicing salts"Proceedings of Tohoku Branch of Architectural Institute of Japan. No. 63. 25-28 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Syoya: "Strain Changes during Scaling Process of Concrete Exposed to Deicing Salts"Cement Science and Concrete Technology. No. 54. 370-375 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Aba: "Frost Susceptibility of Concrete Containing Low-Quality Coarse Aggregates"Transactions of the JCl. Vol. 22. 203-210 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Tsukinaga: "Study on Scaling Resistance of Steam-Cured Concrete Exposed to Deicing Chemicals"Extended Abstracts ; The 55^<th> Annual Meeting of JCA. 144-145 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Syoya: "Scaling Resistance of Concrete Containing fly ash artificial aggregates"Extended Abstracts ; The 55^<th> Annual Meeting of JCA. 142-143 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Tsukinaga: "Study on Scaling Resistance of Steam-Cured Concrete Exposed to Deicing Chemicals"Cement Science and Concrete Technology. No. 55. 438-443 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Tsukinaga: "Effects of Manufacturing condition on Scaling Resistance of Steam-Cured Concrete"Extended Abstracts ; The 55th Annual Meeting of JCA. (in printing). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 月永 洋一: "凍結防止剤の影響を受けるコンクリート製品のスケーリング抵抗性に関する研究"第55回セメント技術大会講演要旨. No.55. 144-145 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 庄谷 征美: "高強度フライアッシュ人工骨材を用いたコンクリートのスケーリング抵抗性"第55回セメント技術大会講演要旨,PP.142-143. No.55. 142-143 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.ABA: "Frost Susceptibility of Concrete Containing Low-Quality Coarse Aggregates"Transactions of the JCI. Vol.22. 203-210 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 月永 洋一: "凍結防止剤の影響を受けるコンクリート製品のスケーリング抵抗性に関する研究"セメント・コンクリート論文集. No.55. 438-443 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 月永洋一: "コンクリートのスケーリング発生過程における表層部コンクリートの歪み変化について"第54回セメント技術大会講演要旨. No.54. 196-197 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 仙木優悦: "塩化物の影響を受けるコンクリートのスケーリング劣化に関する研究"日本建築学会東北支部研究報告集. No.63. 25-28 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 庄谷征美: "塩化物の影響を受けるコンクリートのスケーリング発生過程における歪み挙動に関する2,3の検討"セメント・コンクリート論文集. No.54. 370-375 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 月永洋一: "コンクリートのスケーリング発生過程における表層部コンクリートの歪み変化について"第54回セメント技術大会講演要旨. No.54. (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 仙木優悦: "塩化物の影響を受けるコンクリートのスケーリング劣化に関する研究"日本建築学会東北支部研究報告集. No.62. (2000)

    • Related Report
      1999 Annual Research Report

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

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