COMPOSITION AND ENGINEERING PROPERTIES OF SOIL (III)

TWO NATURAL SOILS, ONE FROM EAST AFRICA AND THE OTHER FROM THE WESTERN UNITED STATES, COMPOSED PREDOMINANTLY OF THE CLAY MINERAL HALLOYSITE, WERE SUBJECTED TO PLASTICITY, COMPACTION, PERMEABILITY, STRENGTH, AND FROST TESTS. THE HALLOYSITE SAMPLES EXHIBITED LOW MAXIMUM DENSITIES AND HIGH OPTIMUM WATER CONTENTS, THE EXTREME BEING A MAXIMUM DENSITY OF 71 LB. PER CU. FT. AT AN OPTIMUM WATER CONTENT OF 47 PERCENT. THE NATURAL FINES OF A SANDY CLAY FROM VIRGINIA WERE REMOVED AND SUCCESSIVELY REPLACED WITH NONTRONITE MADE HOMOIONIC TO THE FOLLOWING IONS: SODIUM, POTASSIUM, CALCIUM, MAGNESIUM, AND FERRIC IRON. PLASTICITY, COMPACTION, PERMEABILITY, STRENGTH, AND CONSOLIDATION TESTS ON THE PREPARED SOIL WERE RUN. AS EXPECTED, THE SODIUM FORM WAS FOUND TO BE THE MOST PLASTIC AND COMPRESSIBLE, AND CONTAINED THE HIGHEST MAXIMUM DRY DENSITY AND THE LOWEST OPTIMUM MOISTURE CONTENT. FOUR CHLORITES (CLINOCHLORE, PROCHLORITE, AND TWO THURINGITES) WERE GROUND AND SUBJECTED TO PLASTICITY AND COMPACTION TESTS. TWO OF THE CHLORITES WERE NON-PLASTIC AND THE OTHER TWO HAD PLASTICITY INDEXES OF ONLY 4 AND 10 PERCENT EVEN THOUGH THE LIQUID LIMITS WERE 44 AND 47 PERCENT, RESPECTIVELY. THE PROCHLORITE HAD AN OPTIMUM MOISTURE CONTENT OF 12 PERCENT EVEN THOUGH ITS PLASTIC LIMIT WAS 40. /AUTHOR/

  • Supplemental Notes:
    • Vol 34, pp 566-582, 9 FIG, 5 TAB, 17 REF
  • Authors:
    • Lambe, T W
    • Martin, R T
  • Publication Date: 1955

Media Info

  • Monograph Title: Proceedings of the Thirty-Fourth Annual Meeting of the Highway Research Board, Washington, D.C., January 11-14, 1955
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00230017
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jun 5 1972 12:00AM