PHYSICAL PROPERTY CHANGES IN A LIME-TREATED EXPANSIVE CLAY CAUSED BY LEACHING

The effects that continuous water leaching has on the engineering and physical properties of a lime-treated expansive clay in north-central Texas were determined. Seventy laboratory-prepared lime-treated clay samples were subjected to continuous accelerated leaching for periods of 45 and 90 days in large-diameter, flexible-wall leach cylinders. The soils' physical properties were measured before and after leaching, then graphically and statistically analyzed for significant changes. Results indicated that leaching does have detrimental impact on the physical properties of lime-treated expansive clays. The property changes are related to lime content and initial moisture content. Permeability of all samples increased dramatically with the addition of lime. Maximum detrimental changes generally occurred at lime contents at or less than the lime modification optimum. At lime contents at or above the lime stabilization optimum, the detrimental effects of leaching were minimized or eliminated. Changes to properties upon leaching varied depending on their compaction water content relative to the optimum.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1991/1295/1295-005.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=PHYSICAL+PROPERTY+CHANGES+IN+A+LIME-TREATED+EXPANSIVE+CLAY+CAUSED+BY+LEACHING&author=L.+McCallister&author=T.+Petry&publication_year=1991
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1295, Soil Stabilization 1991. 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:
  • McCallister, Larry D
  • Petry, Thomas M
• Publication Date: 1991

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 37-44
• Monograph Title: Soil stabilization, 1991
• Serial:
  • Transportation Research Record
  • Issue Number: 1295
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accelerated tests; Calcium oxide; Expansive clays; Graphics; Laboratory tests; Leaching; Moisture content; Permeability; Physical properties; Properties of materials; Statistical analysis
• Uncontrolled Terms: Graphical analysis
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Materials; I42: Soil Mechanics;

Filing Info

• Accession Number: 00611898
• Record Type: Publication
• ISBN: 030905074X
• Files: TRIS, TRB, ATRI
• Created Date: Aug 31 1991 12:00AM