THE FABRIC OF ANISOTROPICALLY CONSOLIDATED SENSITIVE MARINE CLAY

THE RELATIONSHIP BETWEEN SOIL FABRIC AND THE ANISOTROPIC CONSOLIDATION CHARACTERISTICS OF A SENSITIVE, HIGHLY FLOCCULATED MARINE CLAY HAS BEEN STUDIED USING X-RAY DIFFRACTION TECHNQUES. MEASUREMENTS OF THE CLAY PARTICLE PARALLELISM /FABRIC/ WERE PERFORMED ON UNDISTURBED AND REMOULDED SAMPLES OF LEDA CLAY FROM OTTAWA, CANADA, IN AN ATTEMPT TO DETERMINE THE INFLUENCE OF SAMPLE DISTURBANCE ON SOIL FABRIC AND LABORATORY CONSOLIDATION TEST RESULTS. THE AMPLITUDES OF THE 10 A CLAY PEAKS OF THE UNDISTURBED NATURAL CLAYS, MEASURED IN THE MAJOR PRINCIPAL PLANE, INCREASED FROM ABOUT 41 COUNTS PER SECOND AT LOW CONSOLIDATION PRESSURES TO ABOUT 40 COUNTS PER SECOND AT64 TONS PER SQ. FT. THIS IS INTERPRETED AS RESULTING FROM REORIENTATION OF MANY OF THE CLAY PLATELETS INTO THE PLANE PERPENDICULAR TO THE DIRECTION OF THE CONSOLIDATION PRESSURE AN ABRUPT REORIENTATION OCCURRED WHEN THE PRECONSOLIDATION PRESSURE WAS EXCEEDED. REMOULDING THE CLAY APPARENTLY CAUSES A MARKED BREAKDOWN OF THE INTERPARTICLE BONDS AS EVIDENCED BY STRONGER 10 A PEAKS AND INFERRED GREATER PARTICLE PARALLELISM AT ANY GIVEN CONSOLIDATION PRESSURE WITHIN THE RANGE STUDIED. THE INCREASE IN PARALLELISM IS ASSOCIATED WITH A PRONOUNCED REDUCTION IN VOID RATIO WHEN COMPARED WITH THE UNDISTURBED CLAY. /CGRA/

  • Supplemental Notes:
    • Vol 3, No 2, PP 61-72, 4 FIG, 1 TAB, 20 REF
  • Authors:
    • Quigley, R M
    • Thompson, C D
  • Publication Date: 1966-5

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  • Accession Number: 00237265
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 7 1994 12:00AM