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http://dx.doi.org/10.22805/JIT.2021.41.1.007

A study on out-of-plane strengthening of masonry-infilled wall  

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)
Publication Information
Journal of Industrial Technology / v.41, no.1, 2021 , pp. 7-13 More about this Journal
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.
Keywords
Glass fiber-reinforced poloyurea; Out-of-plane reinforcement; Strengthening; Ductility; Energy absorption capacity; Unreinforced masonry wall;
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