Shear Behavior of Ultrahigh Performance Fiber-Reinforced Concrete Beams. I: Experimental Investigation
Publication: Journal of Structural Engineering
Volume 140, Issue 5
Abstract
To quantify the safety margin of shear design provisions for ultrahigh performance fiber-reinforced concrete (UHPFRC), an experimental campaign has been performed. In a four-point bending configuration, shear tests have been conducted on 11 3-m long and 0.38-m high I-shaped girders with varied types of shear reinforcement (stirrups and/or fibers, or neither), combined with longitudinal prestressing or mild steel reinforcing bars. These shear tests have been analyzed in conjunction with a complete materials characterization. To identify the contribution of the fibers to the shear response, prisms have been extracted horizontally, vertically, at 30 and 45° in both undamaged ends of the beams to determine the effective orientation factor. Through this unique combination of data, detailed in the writers’ paper, design provisions and models have been developed, as detailed in a companion paper.
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Acknowledgments
This experimental program has been supervised by a committee chaired by J. Resplendino (SETEC), also chairman of the French mirror group of fib TG8.6. Eiffage (A. Simon and T. Thibaux) and Lafarge (L. Jacques and G. Molines) are gratefully acknowledged for their sponsoring and contribution in the specimen preparation. The writers are pleased to thank S. Grunewald and R. Weyns from Hurks Beton for their help in specimen realization.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 140 • Issue 5 • May 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Sep 7, 2012
Accepted: Jul 2, 2013
Published online: Jul 4, 2013
Published in print: May 1, 2014
Discussion open until: May 26, 2014
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