Research Article
Feb 1972
Cracking Mechanism of Flexible Pavements
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VIEW THE REPLYAuthors: Jacob Uzan, Moshe Livneh, and Elisha ShklarskyAuthor Affiliations
Publication: Transportation Engineering Journal of ASCE
Volume 98, Issue 1
Abstract
The paper deals with the cracking of flexible pavements caused by shrinkage due to drying of the subgrade. A cracking mechanism in pavements is proposed, based on the principle that cracks first appear in the subgrade and are afterwards reflected through the asphaltic layer. Subgrade cracks form under the combined action of the shrinkage by drying and the frictional resistance produced by the granular courses, i.e., restrained shrinkage. A model simulating part of the site conditions is analyzed by the finite element method; results of the analysis are in satisfactory agreement with the test findings. The analysis is also applied to the cracking mechanism at the site. The principal conclusions derived from the results are: (1) Cracking may occur in the subgrade; and (2) a 90-cm thick pavement is able to prevent reflection of cracking. Two cases of cracking, a covered shoulder and a runway, are described. Both cases support the hypothesis of crack reflection.
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Published In
Transportation Engineering Journal of ASCE
Volume 98 • Issue 1 • February 1972
Pages: 17 - 36
Copyright
© 1972 American Society of Civil Engineers.
History
Published in print: Feb 1972
Published online: Feb 5, 2021
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Affiliations
Jacob Uzan
Grad. Inst. of Civ. Engrg., Technion-IIT, Haifa, Israel
Moshe Livneh
Assoc. Prof. of Civ. Engrg., Technion-IIT, Haifa, Israel
Elisha Shklarsky
Prof. of Civ. Engrg., Technion-IIT, 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.