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http://dx.doi.org/10.9711/KTAJ.2011.13.1.071

A study on pull-out behaviours of shotcrete steel fibers according to different shapes  

Kim, Sang-Hwan (호서대학교 토목공학과)
Kim, Ji-Tae (호서대학교 토목공학과)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.13, no.1, 2011 , pp. 71-82 More about this Journal
Abstract
This paper presents the tensile strength of shotcrete steel fibers depending on the shape of steel fiber. The experimental and numerical analyses are performed in this study. In experimental study, a series of laboratory pullout tests are carried out by changing both the angle and the length of the embedded steel fiber according to the corresponding type of steel fiber in order to derive the optimal type of steel fiber. Results obtained from the experimental work are evaluated and compared with the numerical analysis results. The results clearly show that the pull-out strength of the steel fiber are increased with increasing the hook angle and embedded angle of steel fiber. It is also found that the pull-out strength of the steel fiber is larger in case of the short steel fiber body length.
Keywords
Steel fiber shotcrete; pullout test; steel fiber hook angle; steel fiber body length;
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