Effect of Steel Fibers on Bond Strength of Hooked Bars in High-Strength Concrete
Publication: Journal of Materials in Civil Engineering
Volume 23, Issue 5
Abstract
The effect of steel fibers in improving the bond performance of hooked-bar anchorages installed in high-strength concrete (HSC) beam-column connections was evaluated by testing twelve beam-column 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) and the volume fraction of steel fibers added and dispersed in the concrete mix (0, 0.5, 1.0, or 1.5%). 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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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 23 • Issue 5 • May 2011
Pages: 673 - 681
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Oct 19, 2009
Accepted: Nov 7, 2010
Published online: Apr 15, 2011
Published in print: May 1, 2011
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