Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
권호 표지
DOI QR코드

DOI QR Code

Compressive and Flexural Behavior of High-Strength Concrete Incorporating Different Types of Hooked-End Steel Fibers

강섬유 특성에 따른 고강도 콘크리트의 압축 및 휨 거동

  • Jeong, Woo-Jin (Department of Architectural Engineering, Chungnam National University) ;
  • Jin, Ai-Hua (Department of Architectural Engineering, Chungnam National University) ;
  • Yun, Hyun-Do (Department of Architectural Engineering, Chungnam National University)
  • 정우진 (충남대학교 건축공학과) ;
  • 김애화 (충남대학교 건축공학과) ;
  • 윤현도 (충남대학교 건축공학과)
  • Received : 2023.02.03
  • Accepted : 2023.03.02
  • Published : 2023.06.15
Download PDF
⟨ Previous Next ⟩

Abstract

This paper investigates the effects of aspect ratio and volume fraction of hooked-end normal-strength steel fibers on the compressive and flexural properties of high-strength concrete with specified compressive strength of 60 MPa. Three types of hooked-end steel fibers with aspect ratios of 64, 67 and 80 were considered and three volume fractions of 0.25%, 0.50% and 0.75% for each steel fiber were respectively added into each high-strength concrete mixture. The test results indicated that the addition of normal-strength steel fibers is effective to improve compressive and flexural properties of high-strength concrete but fiber aspect ratio had little effect on the modulus of elasticity and compressive strength. As steel fiber content and aspect ratio increased, flexural beahvior of notched high-strength concrete beams was effectively improved.

Keywords

Acknowledgement

이 연구는 정부(교육부)의 재원으로 한국 연구재단 지역대학우수과학자지원사업의 지원을 받아 수행된 연구 결과입니다.(NO. 2016R1D1A3B02008179)

References

  1. Johnston, C. D., "Steel fiber reinforced mortar and concrete: a review of mechanical properties", Special Publication, Vol.44, pp.127~142, 1974, doi: 10.14359/17890
  2. Larsen, I. L., & Thorstensen, R. T., "The influence of steel fibres on compressive and tensile strength of ultra high performance concrete: A review", Construction and Building Materials, Vol.256, 119459, 2020, doi: 10.1016/j.conbuildmat.2020.119459
  3. Kim, Y. I., Lee, Y. K., & Kim, M. S., "Influence of steel fiber volume ratios on workability and strength characteristics of steel fiber reinforced high-strength concrete", Journal of the Korea Institute of Building Construction, Vol.8, No.3, pp.75-83, 2008. https://doi.org/10.5345/JKIC.2008.8.3.075
  4. Kim, Y. L., Park, D. S., & Seo, C. H., "Variations of material characteristics of high-strength concrete according to increase of steel fiber volume", Journal of the architectural Institute of Korea: Structure, Vol.21, No.2, pp.95~101, 2005.
  5. Yoon, E. S., & Park, S. B., "An experimental study on the mechanical properties and long-term deformations of high-strength steel fiber reinforced concrete", KSCE Journal of Civil and Environmental Engineering Research, Vol.26, No.2A, pp.401~409, 2006.
  6. Lim, S. H., Kim, D. H., & Yun, H., D., "Effets of Steel Fiber Contents on Flexural Creep Behavior of High-Strength Concrete", Journal of the Korea Institute for Structural Maintenance and Inspection, Vol. 24 , No.2, pp.111~118, 2020, doi: 10.11112/jksmi.2020.24.2.111
  7. Kim, M. G., Kwak, Y. K., Kang, T. H. K., Hong, S. G., Kim, W. S., & Kwon, W. H., "A Study on the Effect of Steel Fibers in Reinforced High-Strength Concrete Beam-Column Joints Subject to Load Reversal", Journal of Architectural Institute of Korea (Structure & Construction), Vol.27. No.6, pp.19~30, 2011.
  8. Kim, S. H., Kwon, B. U., & Kang, T. H. K., "Seismic Performance Assessment of Roof-Level Joints with Steel Fiber-Reinforced High-Strength Concrete", Journal of the Korea Concrete Institute, Vol.28, No.2, pp.235~244, 2016, 10.4334/JKCI.2016.28.2.235
  9. Gholampour, A., &Ozbakkaloglu, T., "Fiber-reinforced concrete containing ultra high-strength micro steel fibers under active confinement", Construction and Building Materials, Vol.187, pp.299~306, 2018, doi: 0.1016/j.conbuildmat.2018.07.042 https://doi.org/10.1016/j.conbuildmat.2018.07.042
  10. Yazici, S., Inan, G., &Tabak, V., "Effect of aspect ratio and volume fraction of steel fiber on the mechanical properties of SFRC", Construction and Building Materials, Vol.21, No.6, pp.1250~1253, 2007, doi: 10.1016/j.conbuildmat.2006.05.025
  11. Kim, D. H., Jang, S. J., Kim, S. W., Park, W. S., & Yun, H. D., "Effect of hooked-end steel fiber volume fraction and aspect Ratio on flexural and compressive properties of concrete", Journal of the Korea institute for structural maintenance and inspection, Vol.25, No.3, pp.40~47, 2021, doi: doi.org/10.11112/jksmi.2021.25.3.40