High-Performance Plain and Fibrous Latex-Modified and Microsilica Concrete Overlays
Publication: Journal of Materials in Civil Engineering
Volume 20, Issue 12
Abstract
An extensive laboratory experimental program was conducted to develop high-performance fibrous latex-modified concrete (LMC) and microsilica concrete (MSC) overlay mixtures based on target performance characteristics. The designed LMC and MSC overlay normal weight mixtures have the desired workability, and greater than 41 and , respectively, drying shrinkage less than at , low permeability, and adequate hardened air-void parameters. In comparison, the LMC showed lower shrinkage and permeability values than the MSC. The fibrous LMC and MSC mixtures experienced toughness indices values in the range of 8.78–16.42 and had lower shrinkage values than identical mixtures without fibers. In addition, the values of residual strength factors reflect the same fact that synthetic and steel fibers were very effective in recovering the load in postcracking range. The entire overlay types showed high bond strengths as a result of the excellent surface preparation using water-jet blasting. The careful implementation of the right procedures of mixing, placing, finishing, and curing significantly assisted in producing crack-free overlay applications with high bond strengths.
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Acknowledgments
This study is funded by a contract awarded to the University of Illinois at Chicago (UIC) by the Illinois Department of Transportation (IDOT) Modjeski and Masters, Inc. Their financial support is gratefully acknowledged. Thanks are due to Jeff Krozel, Prairie Materials, and Dan Garreffa, Illinois Cement Company, for their continuous support.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 20 • Issue 12 • December 2008
Pages: 742 - 753
Copyright
© 2008 ASCE.
History
Received: Jun 5, 2006
Accepted: May 16, 2008
Published online: Dec 1, 2008
Published in print: Dec 2008
Notes
Note. Associate Editor: Nemkumar Banthia
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