In recognition of the importance of shrinkage-induced stresses in the overall problem, various theories to predict the stresses are reviewed and a few results presented. A theory of cracking is advanced stating that the microcracks are initiated in the vicinity of pre-existing flaws; with increasing shrindage stress the microcracks coalesce to form macrocracks. The crack propagation (deepening or lengthening) is shown to be governed by the crack extension force. The crack spacing in pavements is shown to be a function of shrinkage stresses, strength of the material, and stress relief surrounding the individual cracks. A mechanism for longitudinal cracking is proposed, based on the principle that cracks first appear in the subgrade and are afterwards reflected through the soil-cement base.

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    • Publication of the paper sponsored by Committee on Soil-Portland Cement Stabilization. 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
  • Authors:
    • George, K P
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  • Publication Date: 1973

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 1-10
  • Monograph Title: Soil stabilization
  • Serial:

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Filing Info

  • Accession Number: 00159553
  • Record Type: Publication
  • ISBN: 0309021731
  • Files: TRIS, TRB
  • Created Date: Sep 20 1977 12:00AM