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http://dx.doi.org/10.5762/KAIS.2020.21.11.37

Evaluation of Spraying Characteristics for Masonry Buildings Seismic Retrofit Fiber-Reinforced Mortar  

Hwang, Byoung-Il (Research & Development Center)
Park, Jong-Pil (Research & Development Center)
Yoo, Byung-Hyun (Research & Development Center)
Lee, Dong-gyu (Research & Development Center)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.11, 2020 , pp. 37-43 More about this Journal
Abstract
The seismic reinforcement ratio of SOC facilities, such as domestic roads and railroads, is 96%. Out of approximately 7 million buildings as of 2016, only 0.51 million buildings with seismic performance were secured. Although the proportion of masonry structures is 38.8% of the total buildings, there is almost no seismic resistance, only 2.0%. To solve the problem in Korea, government-level seismic measures are being promoted, but the situation is insufficient. Overseas, the UBC research team in Vancouver, Canada, has developed and used EDCC to reinforce the seismic performance of masonry buildings. EDCC is a construction material that can secure concrete ductility capability by mixing fibers and secure deformation resistance of concrete through bridging action. It is necessary to examine various materials because EDCC is not used as a spray type of secure seismic reinforcement. In this study, as part of the research and development of spraying materials to improve the durability of masonry buildings, this study examined the spraying characteristics of fiber-reinforced mortar according to fiber use and the viscosity change according to the use of thickener. As a result, the working performance of the fiber-reinforced mortar for seismic reinforcement was improved when using 1% fiber and 1% thickener.
Keywords
Seismic reinforcement; Fiber-reinforced mortar; Spraying concrete; Thickener; Fiber;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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