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http://dx.doi.org/10.4334/JKCI.2009.21.6.697

Enhancing the Performance of High-Strength Concrete Corbels Using Steel Fibers and Headed Bars  

Yang, Jun-Mo (School of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Joo-Ha (Technology Research Center, Samsung C&T Corporation)
Shin, Hyun-Oh (School of Civil, Environmental and Architectural Engineering, Korea University)
Yoon, Young-Soo (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of the Korea Concrete Institute / v.21, no.6, 2009 , pp. 697-703 More about this Journal
Abstract
High-strength concrete corbels with varying percentage of steel fibers and two different anchorage types (welding to transverse bar, headed) for the main tension tie were constructed and tested. The results showed that performance in terms of load carrying capacities, stiffness, ductility, and crack width was improved, as the percentage of steel fibers was increased. In addition, the corbel specimens in which headed bars were used as the main tension tie reinforcements showed superior load carrying capacities, stiffness, and ductility compared to the corbel specimens in which the main tension ties were anchored by welding to the transverse bars. From the test results, it is expected that load carrying capacities, durability, and constructibility of high strength concrete corbels would be improved by using steel fibers and headed bars. Experimental results presented in this paper were also compared with various prediction models proposed by researchers and presented in codes. The truss model proposed by Fattuhi provides fairly good predictions for fiber reinforced high-strength concrete corbels.
Keywords
corbels; steel fibers; headed bars; high strength concrete;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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