Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
권호 표지
DOI QR코드

DOI QR Code

Impact Resistance Characteristics of Cementitious Composites Subjected to High-velocity Projectiles with Reinforcement Types

고속 발사체와 충돌한 시멘트복합체의 보강재 종류에 따른 내충격 특성 연구

  • Seok, Won-Kyun (Research & Development Institute, LOTTE E&C) ;
  • Kim, Young-Sun (Research & Development Institute, LOTTE E&C) ;
  • Lee, Yae-Chan (Department of Architectural Engineering, Chungnam National University) ;
  • Nam, Jeong-Soo (Department of Architectural Engineering, Chungnam National University) ;
  • Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University)
  • Received : 2023.02.27
  • Accepted : 2023.05.06
  • Published : 2023.06.20
Download PDF
⟨ Previous Next ⟩

Abstract

This research concentrates on the potential explosion hazards that could arise from unforeseen accidents in the rapidly proliferating hydrogen refueling stations and Energy Storage System(ESS) facilities. It underscores the pivotal role of structural protection technology in alleviating such risks. The research contributes primary data for the formulation of structure protection design by assessing the impact resistance across various reinforcement techniques used in cement composites. The experimental results elucidate that reinforced concrete, serving as the quintessential structural material, exhibits a 20% advancement in impact resistance in comparison to its non-reinforced counterpart. In situations typified by rapid loads, such as those seen with high-velocity impacts, the reinforcement of the matrix with fibers is demonstrably more beneficial than local reinforcement. These insights accentuate the importance of judiciously choosing the reinforcement method to augment impact resistance in structural design.

본 연구는 현재 늘어나고 있는 수소 충전소 및 ESS 시설 등에서 예상치 못한 사고로 발생할 수 있는 폭발 위험과 이로 인한 구조물 방호 기술의 중요성에 초점을 맞추고 있다. 시멘트 복합체의 보강 방법에 따른 내충격 특성을 평가하여 구조물의 방호 설계를 위한 기초 데이터를 제시하였다. 실험결과 가장 기본적 구조재료인 철근콘크리트는 내충격 성능에 미치는 보강효과가 무근 콘크리트에 비해 약 20% 향상되는 것으로 나타났으며, 고속충격과 같은 빠른 하중에 대해서는 국부적 보강보다는 섬유와 같이 매트릭스 전체를 보강하는 방법이 효과적인 것으로 확인되었다.

Keywords

Acknowledgement

This work was supported by LOTTE E&C Research & Development Institute grant funded by the LOTTE E&C.

References

  1. Pyo DY. A study on the safety assessment for fire and explosion in hydrogen handling facility [master's thesis]. [Ulsan (Korea)]: Ulsan University; 2018. 65 p.
  2. Hirata H, Yonezawa K, Ono Y, Tabata Y, Hagio H. High-speed collision simulation of flying object and steel wall due to hydrogen tank rupture. Tokyo (Japan): Report of Obayashi Corporation Technical Research Institute; 2021 Dec. p. 1-6. Report No.: 85
  3. Lee KK. Recent blast-related research for progressive collapse prevention. Magazine of the Korean Society of Steel Construction. 2005 Dec;17(4):39-45.
  4. Kwon SK, Park JC. A review of TNT equivalent method for evaluating explosion energy due to gas explosion. Journal of Korean Society of Explosives & Blasting Engineering. 2015 Sep;33(3):1-13.
  5. Kim YS, Cho HB, Lee SH, Ki JD, Jeon HS, Seok WK. An experimental study on damage and deformation properties by thickness of concrete impacted by high-velocity projectile. Proceedings of the Korea Institute of Building Construction; 2022 Nov 10-11; Busan (Korea): the Korea Institute of Building Construction; 2022. p. 203-4.
  6. Seok WK, Kim GY, Nam JS, Lee YC, Jeon HS, Kim YS. Experimental study on fracture properties with re-bar reinforcement of cement composite subjected to impact of high-velocity projectile. Proceedings of the Korea Institute of Building Construction; 2022 Apr 20-22; Naju (Korea): the Korea Institute of Building Construction; 2022. p. 220-1.
  7. Kim SW, Kwak HK, Park CW, Yoon YS, Kim DJ, Park JI, Park YS, Paer HG, Kim GH, Bae SW, Jung JK. Development of protection and blast resistance structure application technology using high-performance fiber reinforced cement composite materials. Sejong (Korea): Ministry of Land, Infrastructure and Transport; 2019 Jul. 100 p. Report No.: 18SCIP-B128706-02.
  8. Nam JS, Kim HS, Lee IC, Miyauchi H, Kim GY. Evaluation on the impact resistant performance of fiber reinforced concrete by high-velocity projectile and contacted explosion. Journal of the Korea Concrete Institute. 2013 Feb;25(1):107-14. https://dx.doi.org/10.4334/JKCI.2013.25.1.107
  9. Im JM, Cho MJ. High velocity impact characteristics of laminated composite plates with various fiber angles. Transactions of the Korean Society of Mechanical Engineers A. 2018 Jun;38(6):589-94.
  10. Lee YC, Kim GY, Nam JS, Kim HS, Lee SK. The effect of fiber on the pull-out behavior and tensile performance of FRCC. Journal of the Korea Concrete Institute. 2021 Aug;33(4);411-20. https://dx.doi.org/10.4334/JKCI.2021.33.4.411
  11. Han SH, Kim GY, Kim HS, Kim JH, Nam JS. Evaluation on rear fracture reduction and crack properties of cement composites with high-velocity projectile impact by fiber types. Journal of the Korea Concrete Institute. 2015 Apr;27(2);157-67. https://dx.doi.org/10.4334/JKCI.2015.27.2.157
  12. National Defense Research Committee. Summary technical report of division 2: Effects of impact and explosion; WA: National Defense Research Committee; 1946. 512 p.
  13. Choi H, Chung CH, Yoo HK, Kim SY. Effect of reinforcement ratio and impact velocity on local damage of RC slabs. KSCE Journal of Civil and Environmental Engineering Research. 2011 Aug;31(4A):311-21. https://doi.org/10.12652/Ksce.2011.31.4A.311
  14. Ismail AR, Ahmad MAZ, Qadir BAIL, Muhammad YI. Empirical formula prediction on critical umpact energy for scabbing phenomena on concrete structures. Applied Physics Research. 2010 Nov;2(2);192-97. https://doi.org/10.5539/apr.v2n2p192