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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effect of Steel Fibers on Bond Strength of Hooked Bars in Normal-Strength Concrete
Author(s): Bilal S. Hamad, Elias Y. Abou Haidar, and Mohamad H. Harajli
Publication: Structural Journal
Appears on pages(s): 42-50
Keywords: beam-column joints; bond (concrete to reinforcement); hooked-bar anchorages; reinforced concrete; steel fibers
Abstract:The effect of steel fibers in improving the bond performance of hooked-bar anchorages and the ductility of the failure mode of beam-column connections was evaluated by testing 12 beamcolumn-type specimens. The specimen simulated the rigid connection of a vertical cantilever beam to a base column. The tensile beam reinforcement consisted of two bars anchored in the column outside the column reinforcement cage using hooked-bar anchorages. The variables used in the study were the beam bar size (16, 25, or 32 mm [No. 5, No. 8, or No. 10]) and the volume fraction of steel fibers added and dispersed in the concrete mixture (0, 0.5, 1.0, or 1.5%). The analysis of the test results revealed that steel fibers were effective in increasing the anchorage capacity and the ductility of the load-deflection history of specimens with steel fibers as compared with companion specimens identical in geometry and bar size but without steel fibers.
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