Selection of Durable Closure Pour Materials for Accelerated Bridge Construction
Publication: Journal of Bridge Engineering
Volume 15, Issue 6
Abstract
With the public’s demands for reduced construction time and traveling delays, full-depth precast bridge decks or decked bulb tees are being more widely used. When these systems are used, precast elements are brought to the construction site ready to be set in place and quickly joined together. Then, a concrete closure pour (CP) completes the connection. The selection of CP materials is critical. The procedure and methods for selecting durable CP materials are discussed in this paper. The accelerated construction is quantified as two categories: overnight cure of CP materials and 7-day cure of CP materials. For both categories, candidate materials are selected first based on literature review of published data as well as tests of compressive strength and flow and workability. Then, the performance criteria for selecting durable CP materials for both categories are developed based on durability tests of selected candidate materials. These durability tests include freezing-and-thawing durability, shrinkage, bond, and permeability tests.
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Acknowledgments
The research reported in this paper has been performed under the ongoing National Cooperative Highway Research Program (NCHRP) 10-71 project, “Cast-in-Place Reinforced Concrete Connections for Precast Deck Systems.” The Principal Investigator of the project is Professor Catherine French at the University of Minnesota (UMN). Other research team members include R. Eriksson, C. Prussack, A. Schultz, S. Seguirant, and C. Shield. Robert Gulyas of BASF Construction Chemicals, LLC provided valuable comments in our testing program. The writers gratefully acknowledge the support by BASF Construction Chemicals, LLC, CTS Cement Manufacturing Corporation, Dow Reichhold, Specialty Latex LLC, Enco Materials, Inc., Five Star Products, Inc., Lafarge North America, Inc., etc. The opinions and conclusions expressed or implied in this paper are those of the research agency. They are not necessarily those of the Transportation Research Board, the National Research Council, the FHWA, the American Association of State Highway and Transportation Officials, or the individual states participating in the National Cooperative Highway Research Program. The writers would also like to acknowledge Nancy Roberts, Ken Thomas, and Larry Roberts of the Department of Civil and Environmental Engineering at the University of Tennessee Knoxville (UTK) for their assistance with the laboratory testing. Ziling (Ben) Xue, Paul, and Wilma Ziegler, Professor of the Department of Chemistry at UTK, assisted with the permeability tests.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 15 • Issue 6 • November 2010
Pages: 695 - 704
Copyright
© 2010 ASCE.
History
Received: Jul 8, 2009
Accepted: Feb 5, 2010
Published online: Feb 17, 2010
Published in print: Nov 2010
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