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http://dx.doi.org/10.14190/JRCR.2021.9.4.602

Static and Fatigue Flexural Tests of Ductile High-performance Fiber Reinforced Cementitious Composites  

Shin, Kyung-Joon (Department of Civil Engineering, Chungnam National University)
Lee, Do-Keun (Department of Civil Engineering, Chungnam National University)
Lee, Kyoung-Chan (Department of Civil Engineering, Pai Chai University)
Kim, Sung-Il (Korea Railroad Research Institute)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.4, 2021 , pp. 602-608 More about this Journal
Abstract
Recently, research and development has been conducted to impart high performance and functionality to concrete materials by mixing various reinforcing materials into the matrix. Ductile fiber reinforced concrete using a large amount of fibers shows a distributed multiple cracking behavior, and various studies are being conducted on this material. However, research is focused on static behavioral analysis but studies on cyclic behaviors are not sufficient. In this study, beams were made of ductile fiber reinforced concrete with various fiber contents, and static and fatigue flexural tests were performed. As a result, the effect of fiber content on the flexural behavior was analyzed. Also, the applied load level and fatigue life relationship of ductile fiber reinforced concrete was proposed. Concrete with high ductile property could be achieved with a fiber content of 2%. When 0.5% fiber was more added, the maximum flexural strength was similar, but the flexural toughness is nearly doubled. On the other hand, there was no significant difference in the fatigue life of these two mixtures.
Keywords
High-ductile; Fiber reinforced; Concrete; Mortar; Fatigue;
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