DYNAMIC SURFACE DEFLECTION MEASUREMENTS ON RIGID PAVEMENTS COMPARED WITH THE MODEL OF AN INFINITE PLATE ON AN ELASTIC FOUNDATION
The purpose of this study was to develop relations by using the Hertz theory of an infinite plate on a dense fluid subgrade between deflections measured at the point of and away from an applied load and the strength parameters of the pavement. An evaluation procedure was to be developed based on these relations, known pavement characteristics, and dynamic response data collected with the U.S. Army Engineer Waterways Experiment Station (WES) 16-kip vibrator. Deflection relations were established by using a computer program (PCADL) developed by the Portland Cement Association. The deflections were related to the radius of relative stiffness (l), which is a characteristic length dependent on the rigidity of the plate. Maximum stresses were predicted by using the General Dynamics Corporation's H-51 program. From these stresses, a relation was developed between the dynamic stiffness modulus, l, and the allowable single-wheel aircraft load (ASWL). Both destructive and nondestructive vibratory data were collectd on 28 different pavements. Destructive data were used to characterize the pavement material properties and then, by using conventional procedures, to predict the ASWL. Deflection basin data from the WES 16-kip vibrator were used to measure l by using the relations developed from the PCADL program. The study concluded that non-destructive test data can be used with more confidence than previously developed procedures to predict l and ASWL as a function of l.
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Availability:
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Flexible Pavement Design. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Bush III, Albert J
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Conference:
- 59th Annual Meeting of the Transportation Research Board
- Location: Washington District of Columbia, United States
- Date: 1980-1-21 to 1980-1-25
- Publication Date: 1980
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 33-43
- Monograph Title: Concrete Pavements and Pavement Overlays
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Serial:
- Transportation Research Record
- Issue Number: 756
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Computer programs; Deflection; Dynamic modulus of elasticity; Forecasting; Loading and unloading; Loads; Nondestructive tests; Pavements; Rigid pavements; Stiffness; Stresses; Theory; Vibratory equipment
- Old TRIS Terms: Dynamic deflection determination; Pavement deflection; Vibratory loading
- Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;
Filing Info
- Accession Number: 00325979
- Record Type: Publication
- ISBN: 0309030706
- Files: TRIS, TRB
- Created Date: May 21 2000 12:00AM