This article gives a brief account of tests that are being conducted by CIRIA and BRE to find out whether the use of a bentonite slurry during the construction of concrete bored piles affects the friction between the pile and the strata. Three pairs of piles have been constructed using an auger for the first two and a bucket type drill with a bentonite suspension for the third. In the first, concrete was placed through a single hopper and in the second through a tremie pipe. Precautions were taken to ensure that friction measurements were restricted to the pile/london clay boundary and avoided friction at the base of the pile. Push rods indicate the distribution of strain over the length of the pile and vibrating wire gauges give a check on the strain and give more information on the distribution of skin friction. Brief details are given of the loading and recording methods used. Preliminary analysis of the results suggests that the bentonite is not detrimental to side friction and may even enhance it. /TRRL/

  • Availability:
  • Corporate Authors:

    IPC Building and Contract Journals Limited

    32 Southwark Bridge Road
    London SE1 9EX,   England 
  • Publication Date: 1975-7-17

Media Info

  • Features: Photos;
  • Pagination: p. 31
  • Serial:
    • Volume: 266
    • Issue Number: 5002
    • Publisher: Reed Business Information, Limited
    • ISSN: 0010-7859

Subject/Index Terms

Filing Info

  • Accession Number: 00129565
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM