Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) (방사성폐기물학회지)

Korean Radioactive Waste Society (한국방사성폐기물학회)
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Damage Monitoring of Concrete With Acoustic Emission Method for Nuclear Waste Storage: Effect of Temperature and Water Immersion

  • Received : 2022.08.12
  • Accepted : 2022.09.13
  • Published : 2022.09.30
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Abstract

The acoustic emission (AE) is proposed as a feasible method for the real-time monitoring of the structural damage evolution in concrete materials that are typically used in the storage of nuclear wastes. However, the characteristics of AE signals emitted from concrete structures subjected to various environmental conditions are poorly identified. Therefore, this study examines the AE characteristics of the concrete structures during uniaxial compression, where the storage temperature and immersion conditions of the concrete specimens varied from 15℃ to 75℃ and from completely dry to water-immersion, respectively. Compared with the dry specimens, the water-immersed specimens exhibited significantly reduced uniaxial compressive strengths by approximately 26%, total AE energy by approximately 90%, and max RA value by approximately 70%. As the treatment temperature increased, the strength and AE parameters, such as AE count, AE energy, and RA value, of the dry specimens increased; however, the temperature effect was only minimal for the immersed specimens. This study suggests that the AE technique can capture the mechanical damage evolution of concrete materials, but their AE characteristics can vary with respect to the storage conditions.

Keywords

Acknowledgement

This research was supported by the Nuclear Research and Development Program of the National Research Foundation of Korea (2020M2C9A1062959) funded by the Ministry of Science and ICT.

References

  1. J.S. Kim, S.K. Kwon, M. Sanchez, and G.C. Cho, "Geological Storage of High Level Nuclear Waste", KSCE J. Civ. Eng., 15(4), 721-737 (2011). https://doi.org/10.1007/s12205-011-0012-8
  2. W.E. Falck and K.F. Nilsson. Geological Disposal of Radioactive Waste: Moving Towards Implementation, Joint Research Centre Reference Report, JRC 45385 (2009).
  3. H.J. Choi, K.S. Kim, W.J. Cho, J.O. Lee, J.W. Choi, M.S. Lee, Y.C. Choi, J.S. Kim, C.S. Lee, J.W. Lee et al. HLW Long-term Management System Development: Development of Engineered Barrier System Performance, Korea Atomic Energy Research Institute Report, KAERI/RR-3859 (2014).
  4. G. Backblom. Excavation Damage and Disturbance in Crystalline Rock-Results From Experiments and Analyses, Swedish Nuclear Fuel and Waste Management Co. Technical Report, SKB-TR-08-08 (2008).
  5. J.B. Wachtman, W.R. Cannon, and M.J. Matthewson, Mechanical Properties of Ceramics, 2nd ed., 14-28, John Wiley & Sons, New York (2009).
  6. V.R. Hajiabdolmajid, Mobilization of Strength in Brittle Failure of Rock. Diss., 14-19, Department of Mining Engineering, Queen's University (2002).
  7. D.G. Aggelis, A.C. Mpalaskas, and T.E. Matikas, "Investigation of Different Fracture Modes in Cementbased Materials by Acoustic Emission", Cem. Concr. Res., 48, 1-8 (2013). https://doi.org/10.1016/j.cemconres.2013.02.002
  8. J.S. Kim, K.S. Lee, W.J. Cho, H.J. Choi, and G.C. Cho, "A Comparative Evaluation of Stress-Strain and Acoustic Emission Methods for Quantitative Damage Assessments of Brittle Rock", Rock Mech. Rock Eng., 48(2), 495-508 (2015). https://doi.org/10.1007/s00603-014-0590-0
  9. M. Ohtsu, T. Isoda, and Y. Tomoda, "Acoustic Emission Techniques Standardized for Concrete Structures", J. Acoust. Emiss., 25, 21-32 (2007).
  10. K. Ohno and M. Ohtsu, "Crack Classification in Concrete Based on Acoustic Emission", Constr. Build. Mater., 24(12), 2339-2346 (2010). https://doi.org/10.1016/j.conbuildmat.2010.05.004
  11. H. Nakamura, "Chapter 1: Roles and Safety/Health of Technicians Involved in Non-destructive Testing", in: Practical Acoustic Emission Testing, Y. Mizutani and H. Inaba, eds., 1-35, Springer Tokyo, Japan (2016).
  12. Federation of Construction Material Industries, Monitoring Method for Active Cracks in Concrete by Acoustic Emission, JCMS-III B5706, 23-28, Japan (2003).
  13. C.U. Grosse and M. Ohtsu, Acoustic Emission Testing, 41-56, Springer Science & Business Media, Berlin (2008).
  14. S. Shahidan, R. Pulin, N.M. Bunnori, and K.M. Holford, "Damage Classification in Reinforced Concrete Beam by Acoustic Emission Signal Analysis", Constr. Build. Mater., 45, 78-86 (2013). https://doi.org/10.1016/j.conbuildmat.2013.03.095
  15. F. Stockhert, Fracture Mechanics Applied to Hydraulic Fracturing in Laboratory Experiments, Diss., 170-177, Ruhr-Universitat Bochum (2015).
  16. D.G. Aggelis, "Classification of Cracking Mode in Concrete by Acoustic Emission Parameters", Mech. Res. Commun., 38(3), 153-157 (2011). https://doi.org/10.1016/j.mechrescom.2011.03.007
  17. D.G. Aggelis, E.Z. Kordatos, and T.E. Matikas, "Acoustic Emission for Fatigue Damage Characterization in Metal Plates", Mech. Res. Commun., 38(2), 106-110 (2011). https://doi.org/10.1016/j.mechrescom.2011.01.011
  18. W. Trampczynski, B. Goszczynska, and M. Bacharz, "Acoustic Emission for Determining Early Age Concrete Damage as an Important Indicator of Concrete Quality/Condition Before Loading", Materials, 13(16), 3523 (2020). https://doi.org/10.3390/ma13163523
  19. J. Geng, Q. Sun, W. Zhang, and C. Lu, "Effect of High Temperature on Mechanical and Acoustic Emission Properties of Calcareous-Aggregate Concrete", Appl. Therm. Eng., 106, 1200-1208 (2016). https://doi.org/10.1016/j.applthermaleng.2016.06.107
  20. I. Bayane and E. Bruhwiler, "Structural Condition Assessment of Reinforced-Concrete Bridges Based on Acoustic Emission and Strain Measurements", J. Civ. Struct. Health Monit., 10(5), 1037-1055 (2020). https://doi.org/10.1007/s13349-020-00433-0
  21. R. Lyons, M. Ing, and S. Austin, "Influence of Diurnal and Seasonal Temperature Variations on the Detection of Corrosion in Reinforced Concrete by Acoustic Emission", Corros. Sci., 47(2), 413-433 (2005). https://doi.org/10.1016/j.corsci.2004.06.010
  22. M. Ozawa, S. Uchida, T. Kamada, and H. Morimoto, "Study of Mechanisms of Explosive Spalling in HighStrength Concrete at High Temperatures Using Acoustic Emission", Constr. Build. Mater., 37, 621-628 (2012). https://doi.org/10.1016/j.conbuildmat.2012.06.070
  23. C.U. Grosse and F. Finck, "Quantitative Evaluation of Fracture Processes in Concrete Using Signal-based Acoustic Emission Techniques", Cem. Concr. Compos., 28(4), 330-336 (2006). https://doi.org/10.1016/j.cemconcomp.2006.02.006
  24. K. Du, X. Li, M. Tao, and S. Wang, "Experimental Study on Acoustic Emission (AE) Characteristics and Crack Classification During Rock Fracture in Several Basic Lab Tests", Int. J. Rock Mech. Min. Sci., 133, 104411 (2020). https://doi.org/10.1016/j.ijrmms.2020.104411
  25. Z.H. Zhang and J.H. Deng, "New Method for Determining the Crack Classification Criterion in Acoustic Emission Parameter Analysis", Int. J. Rock Mech. Min. Sci., 130, 104323 (2020). https://doi.org/10.1016/j.ijrmms.2020.104323