Ductility and Cracking Behavior of Reinforced Self-Consolidating Rubberized Concrete Beams
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 1
Abstract
This paper investigates the applicability of using optimized self-consolidating rubberized concrete (SCRC) and vibrated rubberized concrete (VRC) mixtures in structural applications. The curvature ductility, ultimate flexural strength, and cracking characteristics of different SCRC and VRC mixtures were tested using large-scale reinforced concrete beams. The variables were crumb rubber (CR) percentage (0–50% by volume of sand), different binder contents (), inclusion of metakaolin (MK), use of air entrainment, and concrete type. The performance of some design codes were evaluated in predicting the cracking moment and crack widths of the tested beams. The results indicated that although the flexural capacity of the tested beams decreased with the addition of CR, adding CR improved the beams’ curvature ductility and reduced its self-weight. Adding CR into concrete also appeared to limit the flexural crack widths but with a slightly higher number of cracks compared to beams without CR. In general, the obtained results from the present work indicate promising potential for SCRC and VRC use in structural applications.
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Acknowledgments
The authors would like to acknowledge the Research & Development Corporation of Newfoundland and Labrador (RDC) for sponsoring this work as part of a larger research project.
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 1 • January 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Feb 8, 2016
Accepted: May 26, 2016
Published online: Jul 21, 2016
Discussion open until: Dec 21, 2016
Published in print: Jan 1, 2017
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