PLASTIC LIMIT DETERMINATION USING A DROP-CONE PENETROMETER

The drop-cone method, in which a 30 degree cone of mass 80 G is allowed to sink into a soil sample at a selection of moisture contents, was used to determine the moisture content/cone penetration curve in the region of the plastic limit for eighteen soils. The moisture content corresponding to the minimum of the curve is shown to be always numerically less than, but to correlate closely with, the plastic limit. It is suggested that the plastic limit be redefined as the moisture content corresponding to the minimum of the moisture content/cone penetration curve, with the advantages that the test is more closely related to soil behaviour, less subjective, at least as reproducible as the Casagrande test and may be carried out simultaneously with the liquid limit test. /Author/ /TRRL/

  • Availability:
  • Corporate Authors:

    Oxford University Press

    Press Road, Neasden
    London NW10 0DD,   England 
  • Authors:
    • Campbell, D J
  • Publication Date: 1976-9

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 295-300
  • Serial:
    • JOURNAL OF SOIL SCIENCE
    • Volume: 27
    • Issue Number: 3
    • Publisher: Blackwell Scientific Publications Limited
    • ISSN: 0022-4588

Subject/Index Terms

Filing Info

  • Accession Number: 00145338
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 13 1977 12:00AM