SOIL MECHANICS. THE INFLUENCE OF ULTRASONIC IRRADATION ON THE GRAIN SIZE DISTRIBUTION AND PLASTICITY OF CLAYEY SOILS

LOW FREQUENCY ULTRASONIC TREATMENT CAN BE USED TO OBTAIN THE COMPLETE SEPARATION OF CERTAIN SOILS INTO THEIR ORIGINAL ELEMENTARY PARTICLES. THE ROTARY SCREEN SYSTEM, PRODUCING CONTINUOUS GRADING, IS THE MOST EFFECTIVE, AND THE TECHNIQUE WOULD INTEREST GEOLOGISTS AND PALEONTOLOGISTS AS WELL AS SOIL MECHANICS ENGINEERS. THE INCREASE IN FINES CONTENT OF SOILS AS A RESULT OF ULTRASONIC IRRADIATION, IS ACCOMPANIED BY AN INCREASE OF THE PLASTICITY INDEX, CHARACTERISED MAINLY BY AN INCREASE IN THE LIQUID LIMIT. THE LIMIT OF PLASTICITY REMAINS ALMOST CONSTANT. THE INCREASE IN PLASTICITY AND OF CLAY CONTENT DUE TO DISPERSION, ARE SUCH THAT THE COEFFICIENT OF ACTIVITY /THE RATIO OF THE PLASTICITY INDEX TO THE CONTENT OF PARTICLES SMALLER THAN 2/ DECREASES INITIALLY, THEN REMAINS CONSTANT AT A VALUE WHICH REPRESENTS THE TRUE ACTIVITY OF THE SOIL. THE GOVERNING FACTOR OF THIS ACTIVITY IS THE MINERALOGIC COMPOSITION OF THE SOIL.

  • Supplemental Notes:
    • Vol 261, No 1, PP 53-54
  • Authors:
    • Fagnoul, A
  • Publication Date: 0

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  • Accession Number: 00228716
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 15 2004 2:37AM