VISCOSITY MEASURMENTS TO DETERMINE THE SHEAR STRENGTH OF PEAT

THE STANDARD TESTS IN SOIL MECHANICS ARE OFTEN OF LITTLE USE WHEN ATTEMPTED ON PEAT. AT THE PRESENT TIME, THE FIELD VANE AND THE PENETROMETER CONE ARE COMMON METHODS FOR DETERMINING SHEAR STRENGTH, BUT THE VALIDITY OF THE RESULTS CAN BE QUESTIONED WHEN THE FIBROUS NATURE OF PEAT IS CONSIDERED. A STUDY BASED ON THE RHEOLOGICAL PROPERTIES OF THE MATERIAL APPEARS TO BE LOGICAL. AN ATTEMPT TO MEASURE THE VISCOSITY OF REMOLDED AMORPHOUS-GRANULAR PEAT USING A BROOKFIELD VISCOMETER WAS MADE. THE PURPOSE OF MEASURING THE VISCOSITY OF PEAT IS TWO-FOLD. FIRSTLY, IT MAY BE POSSIBLE, BY USING VISCOMETER, TO ESTABLISH A TEST WHICH WOULD CORRELATE THE ENGINEERING PROPERTIES OF PEAT WITH SHEAR STRESS, SPEED OF SHEAR AND WATER CONTENT. THIS TYPE OF RELATIONSHIP MAY BE COMPARED TO THE ATTERBERG LIMITS OF A SOIL. SECONDLY, THE INTEREST IN MEASURING THE SLOW PROPERTIES OF PEAT WITH A BROOKFIELD VISCOMETER IS FOR VEHICLE MOBILITY. AS THE SHEAR MECHANISM IS BASICALLY THE SAME FOR BOTH A ROTATING BOB AND A ROTATING WHEEL IN PEAT, TRENDS OBSERVED WITH THE VISCOMETER MAY BE APPLICABLE TO OPERATING MACHINERY.

  • Supplemental Notes:
    • Ad 459 430, 6 PP, 5 FIG
  • Authors:
    • Krzywicki, H R
    • Wilson, N E
  • Publication Date: 1964-8-13

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  • Accession Number: 00233988
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 27 1994 12:00AM