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Quantitative Damage Evaluation of Concrete by AE Rate Process Analaysis

Research Project

Project/Area Number 13450181
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionKumamoto University

Principal Investigator

OHTSU Masayasu  Kumamoto University, Graduate School of Science & Technology, Professor, 大学院・自然科学研究科, 教授 (80109016)

Co-Investigator(Kenkyū-buntansha) SHIGEISHI Mitsuhiro  Kumamoto University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (50253761)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥12,600,000 (Direct Cost: ¥12,600,000)
Fiscal Year 2003: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2002: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2001: ¥8,300,000 (Direct Cost: ¥8,300,000)
KeywordsAcoustic Emission / Core Test / Damage Mechanics / Compression Test / Young's Modulus / アコースティック・エミッション / 損傷力学 / アコーステイツク・エミッション / 圧縮強度
Research Abstract

In recent years, the deterioration of concrete structures has been a public problem, and maintenance techniques have been subjected to intensive research. For the strategic maintenance, it is of significant importance to evaluate not only the strength of concrete but also the degree of damage in concrete. Accordingly, quantitative damage assessment of concrete is developed and proposed by applying acoustic emission (AE) technique and damage mechanics.
Concrete samples damaged by freezing and thawing and carbonation processes are examined as the controlled damage. The quantitative damage evaluation based on fracturing behavior of concrete under uniaxial compression is studied. Since AE behavior of concrete is dependent on the degree of damage, a relation is formulated by the rate process analysis. Employing Loland's model, a relationship between stress and strain is modeled, and then the applicability of the damage parameter is confirmed. By calculating the relative damage, which is evaluated as the ratio of initial Young's modulus to the intact modulus, from AE rate-process analysis, the initial damage of an actual structure is estimated. The results estimated are in remarkable agreement with the actual damages in the controlled samples. Consequently, a data-base is constructed to apply the proposed method to concrete core-samples taken from existing structures.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (34 results)

All Other

All Publications (34 results)

  • [Publications] M.Ohtsu, T.Iida: "Quantitative Damage Evaluation of Concrete Core Samples by Acoustic Emission"Nondestructive Characterization of Materials X (Elsevier). 257-264 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, H.Watanabe: "Quantitative Damage Estimation of Concrete by Acoustic Emission"Journal of Construction and Building Materials. 15. 217-224 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 鈴木哲也, 渡辺弘史, 大津政康: "AE法によるコンクリートの定量的損傷度評価に関する研究"応用力学論文集. 15. 809-816 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Suzuki, H.Watanabe, M.Ohtsu: "Damage Evaluation in Concrete using AE Method"Proc.6^<th> Far-East Conf.on NDT. 99-104 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, M.Ichinose, H.Watanabe: "Damage Estimation of Concrete by AE Rate Process Analysis"Journal of AE. 20. 1-15 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 大津政康(分担執筆): "コンクリート診断技術'03【基礎編】"(社)日本コンクリート工学協会. 286 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, H.Watanabe: "Quantitative Damage Estimation of Concrete by Acoustic Emission"Journal of Construction and Building Materials. Vol.15, Nos.5-6. 217-224 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Z.Shi, M.Suzuki, M.Ohtsu, Y.Hibino: "Numerical Analysis of Multiple Cracks in Concrete based on the Discrete Modeling Approach"Proc. 9^<th> Int.Conf. Structural Faults and Repair. (CD-ROM). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Shiotani, K.Iwaki, M.Ohtsu: "Damage Evaluation of Concrete Structures by AE/UT Technique"Proc. 9^<th> Int.Conf. Structural Faults and Repair. (CD-ROM). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Z.Shi, M.Ohtsu, M.Suzuki, Y.Hibino: "Numerical Analysis of Multiple Cracks in Concrete using the Discrete Approach"Journal of Structural Engineering, ASCE. Vol.127, No.9. 1085-1091 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Iwaki, T.Shiotani, M.Ohtsu: "Damage Assessment for Concrete Structures using AE/UT Techniques"Proc. of 10^<th> Int.Conf. on Fracture. (CD-ROM). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, S.Yuyama: "Recommendation Practice for In Situ Monitoring of Concrete Structures by AE"Journal of AE. Vol.19. 184-190 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Z.Shi, M.Ohtsum: "Application of Linear Programming to the Limit Analysis of Conical-Shaped Steel Water Tanks"Journal of Structural Engineering, ASCE. Vol.127, No.11. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, M.Uchida, T.Okamoto, S.Yuyama: "Damage Assessment of Reinforced Concrete Beams qualified by AE"ACI Structural Journal. Vol.99, No.4. 411-417 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, H.Watanabe, M.Ichinose: "Damage Mechanics for Core Concrete by AE Rate Process"Proc. 1^<st> fib Congress. Session 15-29. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Suzuki, H.Watanabe, M.Ohtsu: "Damage Evaluation in Concrete using AE Method"Proc. 6^<th> Far-East Conf. on NDT. 99-104 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, M.Ichinose, H.Watanabe: "Damage Estimation of Concrete by AE Rate Process Analysis"Journal of AE. Vol.20. 1-15 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, T.Iida: "Quantitative Damage Evaluation of Concrete Core Samples by Acoustic Emission, Nondestructive Characterization of Materials X"Elsevier. 257-264 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Ohtsu, M.Ichinose, H.Watanabe: "Damage Estimation of Concrete by AE Rate Process Analysis"Journal of AE. Vol.20. 1-15 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 鈴木哲也, 大津政康: "AEレートプロセス解析による既設構造物の定量的損傷度評価の考察"第4回構造物の破壊過程解明に基づく地震防災性向上に関するシンポジウム論文集. 17-22 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 鈴木哲也, 友田祐一, 大津政康: "AE法を用いた炭酸化コンクリートの定量的損傷度評価に関する考察"コンクリート構造物の非破壊検査への期待論文集. 165-174 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 鈴木哲也, 大津政康, 友田祐一: "AEレートプロセス解析に基づく劣化コンクリートの損傷度評価に関する実験的研究"第14回アコースティック・エミッション総合コンファレンス論文集. 151-154 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大津政康(分担執筆): "コンクリート診断技術'03【基礎編】"(社)日本コンクリート工学協会. 286 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Ohtsu, S.Yuyama: "Recommendation Practice for In Situ Monitoring of Concrete Structure by AE"Journal of Acoustic Emission. Vol.19. 184-190 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Ohtsu, M.Uchida, T.Okamoto, S.Yuyama: "Damage Assessment of Reinforced Concrete Beams qualified by AE"ACI Structural Journal. Vol.99, No.4. 411-417 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 鈴木哲也, 渡辺弘史, 大津政康: "AE法によるコンクリートの定量的損傷度評価に関する研究"応用力学論文集. Vol.5. 809-816 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Ohtsu, H.Watanabe, M.Ichnose: "Damage Mechanics for Core Concrete by AE Rate Process"Proc. 1^<st> fib Congress, Concrete Structures in 21^<st> Century. (CD-Rom). S15-5 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Suzuki, H.Watanabe, M.Ohtsu: "Damage Evaluation in Concrete using AE Method"Proc. 6^<th> Far-East Conf. on NDT. 99-104 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 大津政康(共著): "コンクリートの診断技術'02【基礎編】"(社)日本コンクリート工学協会. 286 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Ohtsu, H.Watanabe: "Quantitative Damage Estimation of Concrete by Acoustic Emission"Journal of Construction and Building Materials. Nos.5-6. 217-224 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 渡辺弘史, 一ノ瀬誠, 友田祐一, 大津政康: "AE法によるコア・コンクリート供試体の損傷度の同定"コンクリート工学年次論文集. Vol.23, No.1. 493-498 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 渡辺弘史, 村上祐治, 大津政康: "AE法に基づいたコンクリートの定量的損傷度評価法の考察"材料. Vol.50, No.12. 1370-1374 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Shiotani, K.Iwaki, M.Ohtsu: "Damage Evaluation of Concrete Structures by AE/UT Techniques"Proc. 9^<th> Int. Conf. on Structural Faults and Repair. (CD-Rom). (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Iwaki, T.Shiotani, M.Ohtsu: "Damage Assessment of Concrete-Structures using AE/UT Techniques"Proc. ICF-10, Advances in Fracture Research. (CD-Rom). (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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