Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
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A study on out-of-plane strengthening of masonry-infilled wall

조적채움벽의 면외보강에 관한 연구

  • Jang, Hye-Sook (Department of Architectural Engineering, Graduate School of Industrial Technology, Kangwon National University) ;
  • Eun, Hee-Chang (Department of Architectural Engineering, Kangwon National University)
  • Received : 2021.08.31
  • Accepted : 2021.10.25
  • Published : 2021.10.31
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Abstract

Fiber-reinforced polymer reinforcement or polyurea reinforcement techniques are applied to strengthen unreinforced masonry walls (UMWs). The out-of-plane reinforcing effect of sprayed glass fiber-reinforced polyurea (GFRPU), which is a composite elastomer made of polyurea and milled glass fibers on UMW, is experimentally verified. The out-of-plane strengths and ductile behaviors based on various coating shapes are compared in this study. An empirical formula to describe the degree of reinforcement on the out-of-plane strength of the UMW is derived based on the experimental results. It is reported that the peak load-carrying capacity, ductility, and energy absorption capacity gradually improve with an increase in the strengthening degree or area. Compared with the existing masonry wall reinforcement method, the GFRPU technique is a construction method that can help improve the safety performance along with ease of construction and economic efficiency.

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References

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