FREEZE-THAW DURABILITY OF LIME-STABILIZED CLAY SOILS

EFFECTS WERE STUDIED OF OPEN-AND CLOSED-SYSTEM FREEZE-THAW DURABILITY OF LIME-STABILIZED SOILS. THE EFFECTS OF LIME STABILIZATION AND FREEZING AND THAWING ON THE SOIL PORE STRUCTURE AND PERMEABILITY WERE ALSO STUDIED IN AN EFFORT TO GAIN A BETTER UNDERSTANDING OF FREEZE-THAW MECHANISMS. THE SOILS STUDIED WERE: (1) A MONTMORILLONITIC CLAY, A KAOLINITIC FINE SANDY LOAM, AND (3) A RESIDUAL LIMESTONE SOIL OF MIXED MINEROLOGY BUT MORE ILLITE THAN ANYTHING. A HIGH-CALCIUM HYDRATED LIME, WHICH WAS KEPT TIGHTLY SEALED IN PLASTIC BAGS TO MINIMIZE CARBONATION, WAS USED TO STABILIZE THESE SOILS. FREEZING AND THAWING INITIALLY SHARPLY DECREASED THE STRENGTH OF ALL SPECIMENS, BUT THE RESIDUAL LIMESTONE SOILS AND KAOLINITIC LOAM SOILS RECOVERED MUCH OF THE STRENGTH LOSS IN LATER CYCLES. IT IS SPECULATED THAT UNUSED LIME IN THESE SOILS PERMITTED FAIRLY RAPID SELFHEALING. THE MONTMORILLONITE WHICH DID NOT SHOW STRENGTH RECOVERY, STILL HAD GREATER STRENGTH THAN ITS UNSTABILIZED COMPANION SPECIMENS. PORE CHARACTERISTIC AND PERMEABILITY DATA SHOWED CERTAIN TRENDS THAT INDICATED THAT FREEZING AND THAWING OPENED UP THE PORES, REDUCING THE DAMAGING EFFECTS OF LATER FREEZE-THAW CYCLES. ADDITIONS OF LIME INCREASED PORE SIZE AND PERMEABILITY.

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  • Supplemental Notes:
    • Paper sponsored by Committee on Lime and Lime-Fly Ash Stabilization and presented at the 48th Annual Meeting. 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:
    • Esmer, Erkan
    • Walker, Richard D
    • Krebs, Robert D
  • Publication Date: 1969

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 27-36
  • Monograph Title: Soil stabilization: lime, cement
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00232645
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 2004 2:44AM