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http://dx.doi.org/10.12652/Ksce.2012.32.1A.055

An Experimental Study on Shear Behavior of Steel Fiber-Reinforced Ultra High Performance Concrete Beams  

Yang, In Hwan (군산대학교 토목공학과)
Joh, Changbin (한국건설기술연구원 인프라구조연구실)
Lee, Jung Woo (한국건설기술연구원 인프라구조연구실)
Kim, Byung Seok (한국건설기술연구원 SOC성능연구소)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.1A, 2012 , pp. 55-64 More about this Journal
Abstract
Experimental investigation on the structural behavior of steel fiber-reinforced ultra high performance concrete (UHPC) beams subjected to shear are presented. Six tests carried out on simply supported I-beams under concentrated loads are presented. The parameters varied were the volume fraction of the fibers (1.0, 1.5 and 2.0%) and shear span-effective depth ratio (2.5, 3.4). The test results indicated that ultimate shear strength increased with increasing fiber volume, and that ultimate shear strength decreased with increasing shear span-effective depth ratio. In addition, applicability of predictive equations for evaluating the ultimate shear strength of steel fiber-reinforced UHPC beams are estimated based on the test results. The comparison between computed values and the experimentally observed values are shown to validate the proposed theoretical equations. It is found that predictions by using AFGC and JSCE recommendations provide the most accurate estimates of shear strength of steel fiber-reinforced UHPC beams.
Keywords
steel fiber; ultra high performance concrete; crack; deflection; shear strength;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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