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Evaluation of Deterioration of Concrete by Acoustic Emission Method

Research Project

Project/Area Number 04650427
Research Category

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

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

Principal Investigator

YAMURA Kiyoshi  Setsunan University, Faculty of Engineering, Professor, 工学部, 教授 (30026257)

Co-Investigator(Kenkyū-buntansha) MICHIHIRO Kazutoshi  Setsunan University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (50100566)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1992: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsAcoustic emission / Freezing and thawing action / Alkali aggregate reaction / Deterioration of concrete / Young' modulus / Strength / Kaiser effect / アルカリ骨材発生 / アコースティックユミッション
Research Abstract

Recently, Applications of acoustic emission (AE) technology to diagnostic tools attract great attention for the evaluation of deterioration of concrete.
In this study, AE characteristics of deteriorated concrete due to freezing and thawing actions or alkali silica reaction, during compressive loading were investigated. The results were compared with conventional parameters for evaluating the deterioration of concrete, such as compressive strength, Young's modulus and expansion characterisics. At the same time, Kaiser effect in concrete under several conditions of water cement ratio, concrete age, rate of initial loading and storing condition and term after initial loading were investigated.
The experimental results show that AE count rate in low stress lovel becomes large according to the deterioratin of concrete develope, and the AE count rate characteristics in the process of final failure are almost the same as that of the non-deteriorated concrete having the same compressive strenght. Kaiser effect in concrete can not be observed clearly especially in the case that the age of concrete at initial loading is low and the term of storing arter initial loading is long. These phenomena are considered to be used effectively for evaluation of deterioration of concrete.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] S.Nishibayashi: "Effect of Reactive Fine Aggregate on Expansion Characteristics of Concrete due to Alkali Aggregate Reaction" Proc.of 9th International Conference on Alkali-Aggregate Reaction in Concrete,London. 2. 723-730 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 矢村 潔: "劣化コンクリートのAE特性に関する研究" コンクリート工学年次論文報告集. 15-1. 853-858 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 矢村 潔: "コンクリートのカイザー効果に関する-実験" 平成4年度土木学会関西支部年次学術講演会講演概要. V-26-1-V-26-2 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 矢村 潔: "拘束鉄筋がアルカリ骨材反応に及ぼす影響に関する一実験" 土木学会第47回年次学術講演会講演概要集. V. 322-323 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 矢村 潔: "カイザー効果に関する二、三の実験" 平成5年度土木学会関西支部年次学術講演会講演概要集. V-23-1-V-23-2 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 下嶋 一幸: "若材令コンクリートの静約条件下における簡易AE計測" 土木学会第48回年次学術講演会講演概要集. VI. 366-367 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Yamura: "AN Experiment on Kanser Effect in Concrete" Proceedings of JSCE Kansai Branch Annual Meeting. V-26-1 - V-26-2 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Nishibayashi: "Effect of Reactive Fine Aggregate on Expansion Characteristics of Concrete due to Alkali Aggregate Reaction" Proc.of 9th International Conference on Alkali-Aggregate Reaction in Concrete. 723-730 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Yamura: "Study of the Effect of Steel Reinforcement on Alkali Aggregate Reaction of Concrete" Proceedings of JSCE Annual Meeting. 322-323 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Yamura: "Several Experiments on Kaiser Effect in Concerete" Proceedings of JSCE Kansai Branch Annual Meeting. V-23-1 - V-23-2 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Yamura: "Study on Characteristics of Acoustic Emissions of Damaged Concrete" Proceedings of the JCI. 853-858 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Shimozima: "Development of Acoustic Emission Method for Early Age Concrete" Proceedings of JSCE Annual Meeting. 366-367 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Nishibayashi: "Effect of Reactive Frne Aggregate on Expansion Characteristics of Concrete due to Alkalt-Aggregate Reaction" Proc.of 9th International Conference on Alkalt-Aggregate Reaction in Concrete,London. 2. 723-730 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 矢村 潔: "劣化コンクリート工AE特性に関する研究" コンクリート学年次論文報告集. 15-1. 853-858 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 矢村 潔: "コンクリートのカイザー効果に関する一実験" 平成4年度土木学会関西支部年次学術講演会講演概要. V-26-1-V-26-2 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 矢村 潔: "拘束鉄筋がアルカリ骨材反応に及ぼす影響に関する一実験" 土木学会第47回年次学術講演会講演概要集. V. 322-323 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 矢村 潔: "カイザー効果に関する二・三の実験" 平成5年度土木学会関西支部年次学術講演会講演概要集. V-23-1-V-23-2 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 下嶋 一幸: "若材令コンクリートの静的条件下における簡易AE計測" 土木学会第48回年次学術講演会講演概要集. VI. 366-367 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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