BITUMEN COATED PILES CUT EXCESSIVE DOWN-DRAG

A bituminous coating, used on bearing piles to prevent them from being subjected to excessive down-drag by ground settlement, is described. The coating was used for the 14 piles of a 12-storey building in London because subsidence of the clay could cause a negative friction condition leading to down-drag on each pile. 16m of the 38m long under-reamed piles were coated with the bitumen compound SL. The positioning and pile casting sequences are described. The corrosion resistance and the effective loading of the piles is increased by the addition of the coating. After allowing the coating to cool, it is covered with a lime wash which reflects solar heat and prevents flow or creep of the coating. /TRRL/

  • Availability:
  • Corporate Authors:

    Foundation Publications Limited

    7 Ongar Road
    Brentwood CM15 9AU, Essex,   England 
  • Publication Date: 1974-4

Media Info

  • Features: Photos;
  • Pagination: p. 53
  • Serial:
    • GROUND ENGINEERING
    • Volume: 7
    • Issue Number: 3
    • Publisher: EMAP CONSTRUCT LIMITED
    • ISSN: 0017-4653

Subject/Index Terms

Filing Info

  • Accession Number: 00081352
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: May 1 1975 12:00AM