Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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An Experimental Study of the Bond Performance on Reinforced Concrete Beams with Triple Nanomaterials in Lap Splices

겹침이음실험을 통한 삼중나노소재 혼입 철근콘크리트보의 부착성능에 대한 실험적 고찰

  • Jin-Gue Ryu (Dept. of Architectural Engineering, Hanyang University) ;
  • Dong-Hee Son (Dept. of Architectural Engineering, Hanyang University) ;
  • Baek-Il Bae (Dept. of Digital Architectural and Urban Engineering, Hanyang Cyber University) ;
  • Chang-Gi Yoo (Dept. of Architectural Engineering, Hanyang University) ;
  • Chang-Sik Choi (Dept. of Architectural Engineering, Hanyang University)
  • 유진규 (한양대학교 대학원 건축공학과 ) ;
  • 손동희 (한양대학교 대학원 건축공학과) ;
  • 배백일 (한양사이버대학교 디지털건축도시공학과) ;
  • 유창기 (한양대학교 대학원 건축공학과 ) ;
  • 최창식 (한양대학교 건축공학부 )
  • Received : 2023.07.26
  • Accepted : 2023.09.21
  • Published : 2023.10.30
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Abstract

This study aims to assess the impact of combining triple hybrid reinforced concrete with carbon nanotubes, nanosilica, and graphene oxide on bond strength. The mechanical properties of these materials were evaluated through material testing and assessed bond strength via lap-splice experiments. The material testing revealed that nano-reinforced concrete had a slight increase in compressive strength compared to regular concrete but showed a significant improvement in splitting tensile strength. It also exhibited decreased volumetric strain and Poisson's ratio. To understand if these mechanical properties influenced bond strength, laboratory splice experiments were conducted using eight reinforced concrete specimens, varying splice length and cover thickness. The results of the lap-splice experiment showed variations in bond strength depending on the inclusion of nanomaterials in the mixture, with varying increases in bond strength as splice strength changed. This suggests that the combination of these triple nanomaterials does impact the bond performance of concrete.

Keywords

Acknowledgement

이 논문은 2023년도 정부 (과학기술정보통신부) 연구비 지원에 의한 결과의 일부임. (과제번호 : RS-2023-00207763, NRF-2022R1A2C3008940)

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