EXPERIMENTS ON PIPING IN SANDY GRAVELS

Tests on internally unstable sandy gravels show that a significant proportion of the sand content is washed out by piping at hydraulic gradients far lower than the critical gradient given by a classical theory. The probable explanation is that a major part of the overburden load is carried on a framework of gravel particles, leaving the sand under relatively small pressures. By contrast, piping of the sand from stable sandy gravels occurs at approximately the full theoretical gradient. The tests broadly confirm Kenney's criterion for the internal stability of granular materials.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • SKEMPTON, A W
  • BROGAN, J M
• Publication Date: 1994-9

Language

• English

Media Info

• Features: References;
• Pagination: p. 449-60
• Serial:
  • GEOTECHNIQUE
  • Volume: 44
  • Issue Number: 3
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Erosion; Gravel; Sand; Seepage
• ITRD Terms: 5275: Erosion; 4575: Gravel; 4105: Sand; 4315: Seepage
• Subject Areas: Geotechnology; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00677386
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: May 25 1995 12:00AM