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http://dx.doi.org/10.4334/JKCI.2014.26.6.771

Structural Behavior of Hybrid Steel Fiber-Reinforced Ultra High Performance Concrete Beams Subjected to Bending  

Yang, In-Hwan (Department of Civil Engineering, Kunsan National University)
Kim, Kyoung-Chul (Department of Civil Engineering, Kunsan National University)
Joh, Chang-Bin (Structural Engineering Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of the Korea Concrete Institute / v.26, no.6, 2014 , pp. 771-778 More about this Journal
Abstract
This paper concerns the flexural behavior of hybrid steel fiber-reinforced ultra high performance concrete (UHPC) beams. It presents experimental research results of hybrid steel fiber-reinforced UHPC with steel fiber content of 1.5% by volume and steel reinforcement ratio of less than 0.02. This study aims at providing realistic information about UHPC beams in bending in order to establish a reasonable prediction model for flexural resistance in structural code in the future. The experimental results show that hybrid steel fiber-reinforced UHPC is in favor of cracking resistance and ductility of beams. The ductility indices range through 9.2 to 15.2, which means high ductility of UHPC. Also, the flexural capacity of beam which contains stirrups in pure bending zone is similar to that of beam which does not contain stirrups in pure bending zone. This result represents that the flexural capacity is not affected by the presence of stirrups whose spacing is 150 mm in bending zone.
Keywords
ultra high performance concrete; hybrid steel fibers; flexural capacity; ductility; crack;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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