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The Study on Alkali-Aggregate Reaction and the Evaluation of Concrete Damage by its Reaction

Research Project

Project/Area Number 60460155
Research Category

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

Allocation TypeSingle-year Grants
Research Field コンクリート工学・土木材料・施工
Research InstitutionTOTTORI UNIVERSITY

Principal Investigator

SHINZO Nishibayashi  Tottori University Professor, 工学部, 教授 (00032011)

Co-Investigator(Kenkyū-buntansha) YOSHINO Akira  Tottori University Research Assistant, 工学部, 助手 (40135835)
INOUE Shouichi  Tottori University Assistant Professor, 工学部, 助教授 (10032286)
YAMURA Kiyoshi  Tottori University Assistant Professor, 工学部, 助教授 (30026257)
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1987: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1986: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1985: ¥4,200,000 (Direct Cost: ¥4,200,000)
KeywordsAlkali-Aggregate Reaction, / Durability of Concrete / Cracking Damage / ひびわれ乾湿の繰返し / オートクレーブ / コンクリートの劣化 / コンクリート部材の耐力 / コンクリート構造物の補修・補強 / ひびわれ
Research Abstract

In order to prevent the concrete damage from alkali-aggregate reaction, it is important to know th ereactivity of aggregate and to evaluate previously the concrete cracking damage.
This study is planned to develope the testing method byconcrete prism specimen for determining the potential reactivity of aggregate and to evaluate the cracking damage of concrete due to alkali-aggregate reaction.
The concluding of the present study are summarized as follows:
(1) The rate of expansion and the maximum value of expansion in concrete are respectively slower and smaller than those of mortar bar.
(2) In concrete stored at 20゜C, R.H. 100%, immersed in water and sea-water, the expansions are started initially from about 6 months, especially the expansion in sea-water at 1 year becomes approximately same as that at 40゜C, R.H.100 %.
(3) The patterns of crack occured in concrete specimen are characterized that these are fine width and many cracks at the condition of thigh temperature (40゜C, R.H.100%) and large width and few crack in case of low temperature (40゜C, R.H. 100%) and in water and sea-water.
(4) The expansion due to alkali-aggregate reaction is accelerated by the repeating treatment of dry and wet.
(5) The deterioration of concrete due to alkali-aggregate reaction can be evaluated by both the expansion and the decrease of dynamic modulus of elasticity, as these limit values, 0.1% in the expansion and 85% in the relative dynamic modulus of elasticity are proposed.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 西林新蔵, 矢村潔: Proc. of the 7th Intcnnatinal Conferemce on Slkali Sggregate Reoction. 299-303 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西林新蔵: 第9回コンクリート工学年次論文報告集. 9. 579-584 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西林新蔵, 矢村潔: 第9回コンクリート工学年次論文報告集. 9. 645-650 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西林新蔵, 矢村潔: 第9回コンクリート工学年次論文報告集. 9. 627-632 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西林新蔵, 矢村潔: Transactions of Japan Concrete Institute. 9. 227-232 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西林新蔵, 矢村潔: Transoctions of Japan Concrete Insttute. 9. 233-240 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 岡田清編集, 西林新蔵 他: "コンクートの耐久性" 朝倉書店, 213 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 岡田清編集, 西林新蔵, 矢村潔 他: "最近コンクリート工学" 国民科学社, 314 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] S. Nishibayashi and et al.: "Response of JCI to Alkali-Aggregate Reactivity Problem - Guideline for Determining Potential Alkali Reacivity" Procs. of the 7th international Conference on Alkali- Aggregate Reaction, Ottawa. 264-268 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] S. Nishibayashi, K. Yamura and et al.: "A Rapid Method of Determining the Alkali-Aggregate Reaction in Concrete by Autoclave" Procs. of the 7th International Conference on Alkali- Aggregate Reaction. 299-303 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] S. Nishibayashi, K. Yamura and et al.: "Study on the Effect of Testing Conditions on Alkali- Aggregate Reaction" Transactions of JCI. 9. 227-232 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] S. Nishibayashi, K. Yamura and et al.: "Evaluations of Alkali-Aggregate Reaction by Concrete Specimen" Transactions of JCI. 9. 233-240 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] S. Nishibayashi and et al.: "The Effects of Admixtures on the Durability of Concrete in an Undersea Environment" Procs. of the 2nd International Conference on Performance of Concrete in Marine Environment. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西林新蔵他: セメント技術年報. 40. 296-299 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 西林新蔵: コンクリート工学. 24. 57-63 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 西林新蔵: コンクリート工学. 24. 92-102 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 西林新蔵他: Proceedings of The Internatinal Comference on AAR,ottawo. (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 西林新蔵他: Proceedings of 7th Internatianol Conference on AAR,ottawa. (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 西林新蔵: セメント協会第173,174回講習会テキスト. 77-98 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 岡田清編著 西林新蔵分担執筆: "コンクリートの耐久性" 朝倉書店, 213 (1986)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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