Effect of Slab-Base Interaction on Measured Concrete Pavement Responses
Publication: Journal of Transportation Engineering
Volume 132, Issue 5
Abstract
An experimental analysis of response data from actual aircraft passes at Denver International Airport was conducted to determine the effect of the slab-base interaction on concrete pavement responses. This analysis was divided into three parts: gap analysis from deflection data, interface analysis from paired strain data, and comparison between predicted and measured strains. The gap analysis showed that gaps exist between the slab and base, depending on the temperature differential and slab location. The gap analysis also indicated the existence of an effective built-in temperature difference. Despite the indication of gaps beneath the slab, the paired strain data analysis indicated contact friction or bonding action under wheel loading. The greatest contact friction occurred at the slab interior, followed by doweled transverse joints and transverse dummy joints, whereas an unexpected full-slip condition was found at tied longitudinal joints. The comparison between measured and predicted strain confirmed contact friction is developed under aircraft gear loading.
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Acknowledgments
This paper was prepared from a study conducted in the Center of Excellence for Airport Technology, funded by the Federal Aviation Administration under Research Grant No. UNSPECIFIED95-C-001 and the University of Illinois. The contents of this paper reflect the views of the writers, who are responsible for the facts and accuracy of the data presented within. The contents do not necessarily reflect the official views and policies of the Federal Aviation Administration. This paper does not constitute a standard, specification, or regulation. Dr. Ernest Barenberg has actively participated in this research. His comments, suggestions, and ideas are greatly appreciated.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 132 • Issue 5 • May 2006
Pages: 425 - 434
Copyright
© 2006 ASCE.
History
Received: Feb 1, 2005
Accepted: Apr 19, 2005
Published online: May 1, 2006
Published in print: May 2006
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