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NEW EQUIPMENT FOR DENSIFICATION OF GRANULAR SOILS AT DEPTH

An in situ densification probe that employs the novel technique of simultaneous vibration and dewatering has been developed by Phoenix Engineering Ltd. to compact deep, loose, granular soils. It is believed that pumping water out of the soil during the densification process offers improved densification capability over systems operating with vibration alone. An independent study was undertaken by the In-Situ Testing Group at the University of British Columbia to evaluate the performance of the Phoenix system. A field testing programme was conducted at a site in Vancouver where hydraulic sand fill overlies a natural silt and then medium Fraser River sand. Characterization of the site and evaluation of the densification treatment process were achieved using in situ tests. Changes to soil parameters due to densification treatment were examined, taking into account the modification of stresses brought about by the vibro-drainage process. The study investigated the degree of densification achieved, the value of concurrent drainage, the zone of influence of a single compaction probe, and group effects. The study also compares the performance of the Phoenix machine with that of other vibrocompaction equipment.

  • Corporate Authors:

    National Research Council of Canada

    Research Journals
    Ottawa, Ontario K1A 0R6,   Canada 
  • Authors:
    • Campanella, R G
    • Hitchman, R
    • Hodge, W E
  • Publication Date: 1990-4

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 167-176
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00495632
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 31 1990 12:00AM