Research Article
Aug 1973
Flexible Pavement Evaluation Using Hertz Theory
Publication: Transportation Engineering Journal of ASCE
Volume 99, Issue 3
Abstract
Hertz's theory of the deflection of an elastic plate on a fluid subgrade, which was the basis for Westergaard's analysis of concrete pavements, is shown to be applicable to flexible pavement evaluation. Graphs are presented enabling the interpretation of deflection bowl measurements for both the vibratory Road Rater and the Benkelman Beam in terms of the characteristic length, l, of the flexible pavement. The load required to cause a unit deflection of the pavement surface, referred to as pavement stiffness, is examined in terms of the size of the loaded area, the pavement flexural rigidity, and the coefficient of subgrade reaction. The required pavement stiffness is shown to increase for multiple wheel gears with increasing pavement characteristic length. Test data are presented for both conventional flexible and full depth asphaltic concrete pavements on clay subgrades using both the Road Rater and Benkelman Beam.
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Published In
Transportation Engineering Journal of ASCE
Volume 99 • Issue 3 • August 1973
Pages: 449 - 466
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Aug 1973
Published online: Feb 5, 2021
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Authors
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Gdalyah Wiseman
Prof., Faculty of Civ. Engrg. Israel Inst. of Tech., Haifa, Israel
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.