REDUCING NEGATIVE FRICTION WITH BITUMEN SLIP LAYERS

Negative friction exerted by settling soil layers on foundation elements such as bearing piles can be considerably reduced by providing the elements with a 0.4-in. (10-mm) thick layer slip made of a special grade of bitumen. Theoretical studies at the Koninklijke/Shell/Laboratorium, Amsterdam, have defined the properties the bitumen should have in order to stand up to the conditions of application, storage, driving, and reduction of negative friction. Full-scale trials, including test loadings, have demonstrated these slip layers to be very effective. Depending on the type of foundation and the structure of the soil it is possible to reduce the number of foundation piles required by 15%-50% or even more, at an additional cost of 10%-20% of the cost of the piles driven. About 10,000 piles with bitumen slip layers were used for the foundations of plants of Shell Nederland Chemie in the Netherlands.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Claessen, AIM
  • Horvat, E
• Publication Date: 1974-8

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 925-944
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 100
  • Issue Number: GT8
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Bearing capacity; Bitumen; Foundations; Loads; Negative skin friction; Soil mechanics; Soil tests
• Uncontrolled Terms: Loading
• Old TRIS Terms: Negative friction
• Subject Areas: Geotechnology; Railroads;

Filing Info

• Accession Number: 00072570
• Record Type: Publication
• Source Agency: American Society of Civil Engineers
• Report/Paper Numbers: #10764 Proc Paper
• Files: TRIS
• Created Date: Dec 31 1976 12:00AM