EVALUATION OF SOIL-LIME STABILIZATION MIXTURES

AS THE USE OF LIME FOR STABILIZATION OF BOTH FINE-GRAINED AND GRANULAR SOIL MATERIALS CONTINUES TO INCREASE EACH YEAR, SO DO THE REQUESTS FOR LIME CONTENT RECOMMENDATION. THIS INFORMATION IS NOT READILY AVAILABLE. MEMBERS OF OUR PROFESSION CUSTOMARILY TURN TO WHATEVER MEANS OF TESTING THAT IS AVAILABLE TO SEEK ANSWERS. THIS REPORT COMMENTS ON WAYS AND MEANS OF ANALYZING SOIL-LIME MIXTURES FROM THE FOLLOWING STANDPOINTS' /1/ STRENGTH AND P.I. TESTS ON CORES TAKEN FROM OLD ROADS, /2/ THE CRACKING PROBLEM FOR LIME- STABILIZED BASE COURSES, /3/ DEFLECTION TESTS, /4/ RELATION OF STRENGTH TO PERCENT OF LIME WITH EMPHASIS ON EFFECT OF CURING TIME, /5/ THE REHEALING PROPERTIES OF SOME MIXTURES, AND /6/ THE EFFECT OF MOISTURE, LIME CONTENT, PURITY OF LIME, AND FINENESS OF LIME ON EARLY LOSS OF COHESION IN RAW SOIL. THE REPORT INDICATES THAT CORE STRENGTHS ARE TWO AND ONE-HALF TO THREE TIMES AS GREAT AS WOULD BE OBTAINED UNDER NORMAL ROOM TEMPERATURE CURING PERIODS. THE REPORT ALSO CONCLUDES THAT FOR EQUAL PERCENTAGES OF THE FOUR TYPES OF LIMES STUDIED, THE FINER AND PURER THE LIME THE GREATER THE LOSS IN THE COHESION OF THE RAW GUMBO SOIL TESTED. THIS LOSS OF COHESION IS BELIEVED TO BE ONE OF THE KEY FACTORS INFLUENCING EFFICIENT AND ECONOMICAL MIXING IN THE FIELD. ON THE BASIS OF TESTING ROAD CORES, BOTH SHORT-AND LONG-TIME CURED LABORATORY SPECIMENS AND EARLY EFFECTS ON COHESION OF SOIL, A CHART FOR RECOMMENDED LIME CONTENTS IS PRESENTED. THE CHART INCLUDES THE PLASTICITY INDEX, AND THE PERCENT MINUS NO. 40 MESH, AND IS BASED ON THE USE OF A FAIRLY PURE FINE-HYDRATED LIME. /AUTHOR/

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  • Supplemental Notes:
    • Paper sponsored by Committee on Lime and Lime-Fly Ash Stabilization and presented at the 45th 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:
    • McDowell, Chester
  • Publication Date: 1966

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 15-24
  • Monograph Title: Behavior characteristics of lime-soil mixtures
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00230552
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 2004 2:40AM