Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Enhancement of Compressive and Shear Strength for Concrete Masonry Prisms with Steel Fiber-Reinforced Mortar Overlay

강섬유보강 모르타르 바름에 의한 콘크리트 조적 프리즘의 압축 및 사인장 강도 증진 효과

  • Yu, Ji-Hoon (Department of Architecture, Incheon National University) ;
  • Myeong, Seong-Jin (Department of Architecture, Incheon National University) ;
  • Park, Ji-Hun (Division of Architecture and Urban Design, Incheon National University)
  • 유지훈 (인천대학교 일반대학원 건축학과) ;
  • 명성진 (인천대학교 일반대학원 건축학과) ;
  • 박지훈 (인천대학교 도시건축학부)
  • Received : 2020.10.15
  • Accepted : 2020.12.01
  • Published : 2021.01.01
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Abstract

Concrete masonry prisms are strengthened with steel fiber-reinforced mortar (SFRM) overlay and tested for compressive and diagonal tension strength. Masonry prisms are produced in poor condition considering standard workmanship for masonry buildings in Korea. Amorphous steel fibers are adopted for SFRM, and appropriate mixing ratios of SFRM are derived considering constructability and strength. Masonry prisms are strengthened with different fiber volume ratios, while numerous strengthened faces and additional reinforcing meshes are produced for compression and diagonal tension tests. Compression and diagonal tension strength are increased by up to 122% and 856%, respectively, and the enhancement effect for diagonal tension strength was superior compared to compression strength. Finally, the test results and strength prediction equations based on existing literature and regression analysis are compared.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호 20CTAP-C152105-02).

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