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http://dx.doi.org/10.4334/JKCI.2015.27.3.283

Flexural Strength of Hybrid Steel Fiber-Reinforced Ultra-High Strength Concrete Beams  

Yang, In-Hwan (Dept. of Civil Engineering, Kunsan National University)
Kim, Kyoung-Chul (Dept. of Civil Engineering, Kunsan National University)
Joh, Chang-Bin (Structural Engineering & Bridges Research Division, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korea Concrete Institute / v.27, no.3, 2015 , pp. 283-290 More about this Journal
Abstract
This paper proposes a method for predicting flexural strength of hybrid steel fiber-reinforced ultra-high strength concrete beams. It includes an experimental test framework and associated numerical analyses. The experimental program includes flexural test results of hybrid steel fiber-reinforced ultra-high strength concrete beams with steel fiber content of 1.5% by volume. Tensile softening characteristics play an important role in the structural behavior of steel fiber-reinforced ultra high performance concrete. Tension softening modeling is carried out by using crack equation based on fictitious crack and inverse analysis in which load-crack mouth opening displacement relationship is considered. The comparison of moment-curvature curves of the numerical analysis results with the test results shows a reasonable agreement. Therefore, the numerical results confirms that good prediction of flexural behavior of steel fiber-reinforced ultra high strength concrete beams can be achieved by employing the proposed method.
Keywords
hybrid steel fiber; ultra-high strength concrete; tension softening; moment-curvature; flexural strength;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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