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

Korean Radioactive Waste Society (한국방사성폐기물학회)
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Dynamic Material Testing of Aged Concrete Cores From the Outer Wall of the High-Flux Advanced Neutron Application Reactor

  • JaeHoon Lim (Korea Atomic Energy Research Institute) ;
  • Byoungsun Park (Korea University) ;
  • Jongmin Lim (Korea Atomic Energy Research Institute) ;
  • Yun-Young Yang (Korea Atomic Energy Research Institute) ;
  • Sung-Hyo Lee (Korea Atomic Energy Research Institute) ;
  • Sang Soon Cho (Korea Atomic Energy Research Institute)
  • Received : 2024.03.05
  • Accepted : 2024.04.30
  • Published : 2024.06.30
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Abstract

Concrete structures must maintain their shielding abilities and structural integrity over extended operational periods. Despite the widespread use of dry storage systems for spent nuclear fuel, research on the properties of deteriorated concrete and their impact on structural performance remains limited. To address this significant research gap, static and dynamic material testing was conducted on concrete specimens carefully extracted from the outer wall of the High-flux Advanced Neutron Application ReactOr (HANARO), constructed approximately 30 years ago. Despite its age, the results reveal that the concrete maintains its structural integrity impressively well, with static compression tests indicating an average compressive strength exceeding the original design standards. Further dynamic property testing using advanced high-speed material test equipment supported these findings, showing the consistency of dynamic increase factors with those reported in previous studies. These results highlight the importance of monitoring and assessing concrete structures in nuclear facilities for long-term safety and reliability.

Keywords

Acknowledgement

This work was supported by the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20211710200020), the Institute for Korea Spent Fuel (iK-spent Fuel), and the National Research Foundation of Korea (NRF) grant funded by the Korean government (Ministry of Science and ICT, MSIT) (No. 2021M2E1A1085229).

References

  1. K. Kwon, H. Jung, and J.W. Park, "Service-Life Prediction of Reinforced Concrete Structures in Subsurface Environment", J. Nucl. Fuel Cycle Waste Technol., 14(1), 11-19 (2016). 
  2. K.I. Jung, J.H. Bang, J.B. Park, and J.H. Yoon, "Concrete Degradation Comparison of Computer Programs for Post-Closure Safety Assessment of Wolsong Low-and Intermediate-Level Radioactive Waste Disposal Facility", J. Nucl. Fuel Cycle Waste Technol., 11(4), 311-324 (2013). 
  3. J.S. Kim, D. Kook, J.W. Choi, and G.Y. Kim, "State-of-Arts of Primary Concrete Degradation Behaviors due to High Temperature and Radiation in Spent Fuel Dry Storage", J. Nucl. Fuel Cycle Waste Technol., 16(2), 243-260 (2018). 
  4. P.H. Bischoff and S.H. Perry, "Compressive Behaviour of Concrete at High Strain Rates", Mater. Struct., 24(6), 425-450 (1991). 
  5. M. Pajak, "The Influence of the Strain Rate on the Strength of Concrete Taking Into Account the Experimental Techniques", Archit. Civil Eng. Environ., 4(3), 77-86 (2011). 
  6. H. Kim, G. Kim, S. Lee, M. Son, G. Choe, and J. Nam, "Strain Rate Effects on the Compressive and Tensile Behavior of Bundle-type Polyamide Fiber-reinforced Cementitious Composites", Compos. B. Eng., 160, 50-65 (2019). 
  7. H.J. An, W.H. In, H.Y. Choi, K.H. Lim, S.O. Hur, S.H. Lee, and T.H. Kim. Status of Solid Radioactive Waste Generation in HANARO Seismic Retrofitting Construction, Korea Atomic Energy Research Institute Report, KAERI/TR-6967/2017 (2017). 
  8. J.H. Lim, Y.J. Hong, S.H. Lee, and S.S. Cho. Year-2022 Self-Disposal of Concrete Cores From HANARO for Material Testing, Korea Atomic Energy Research Institute Report, KAERI/TR-9257/2022 (2022). 
  9. J. Lee and S.S. Cho, "Novel Concrete Specimen Geometry for Dynamic Compression Tests", JMST Adv., 6(1), 75-87 (2024). 
  10. Y.Y. Yang, J.M. Lim, J.W. Lee, and S.S. Cho. A Construction Report of Intermediate High Speed Material Test Equipment, Korea Atomic Energy Research Institute Report, KAERI/TR-9265/2022 (2022). 
  11. GOM Metrology. "Digital Image Correlation: Motion and Deformation Analysis." GOM homepage. Accessed Sep. 28 2023. Available from: https://www.gom.com/en/topics/digital-image-correlation.