Experimental Investigation of Surface Preparation on Normal and Ultrahigh-Performance Concrete Interface Behavior
Publication: Journal of Bridge Engineering
Volume 26, Issue 4
Abstract
Many bridges in the United States are classified as structurally deficient and many others are nearing the end of their design service life, necessitating robust and durable bridge rehabilitation methodologies. States’ department of transport have recently developed innovative solutions for accelerated bridge construction using Ultrahigh Performance Concrete (UHPC) as grout material between prefabricated bridge components or as an overlay over existing bridge decks to increase their service life. The normal strength concrete (NSC)-UHPC interface behavior is critical in determining the overall performance of such NSC-UHPC composites. In this study, an experimental investigation was performed to quantify the effect of surface preparation and interface reinforcement on NSC-UHPC interface performance. The results from this study were compared with the current design guidelines for estimating interface shear capacity. In general, it can be concluded that increasing roughness depth and reinforcement area has a positive effect in interface shear capacity.
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Acknowledgments
The study reported in this paper is supported by the National Science Foundation through the Engineering for Natural Hazards (ENH) program (Grant No. 1662963). Any opinions, findings, and conclusions expressed in this paper are those of the authors, and do not necessarily represent those of the sponsor. The authors would like to thank the reviewers for their insightful comments, which helped to improve the paper. The authors would also like to acknowledge help received from Collin Sewell during specimen fabrication and test setup in the Large Scale Structures Lab at University of Alabama. The authors are thankful to Dr. Ali A. Semendary for his valuable inputs in preparation of the manuscript. In addition, the authors are thankful to Brian Muni from the University of Central Florida for his help during some of the experimental activities as part of Research Experience for Undergraduates (REU) program.
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Information & Authors
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Published In
Journal of Bridge Engineering
Volume 26 • Issue 4 • April 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Nov 2, 2019
Accepted: Oct 28, 2020
Published online: Jan 20, 2021
Published in print: Apr 1, 2021
Discussion open until: Jun 20, 2021
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