TESTS PROVE GEOTEXTILES OFFER LONG-TERM GEOMEMBRANE PROTECTION

Tests, using cyclic compression loading generated by a tensile testing machine were designed to subject the geomembrane to the cutting, punching and abrasive action of the aggregate. The method was also used to compare the relative cushioning effectiveness of sand and geotextiles. Results showed that geomembrane and geotextile type, caliper and/or basis weights are important factors in determining damage resistance. Drainage properties were found to be dependent upon fabric caliper. Laboratory tests showed a 25 or 50 per cent reduction in caliper when compressed faces were equivalent to that of 13 and 27 feet of water depth respectively. Compression creep to 76 k Pa normal load at 26 feet pond depth was investigated in the laboratory by measuring the caliper changes of six different geotextiles over a 23 month period. After the compression of initial loading, a caliper loss of 10 per cent was noted; the fabrics came to equilibrium within nine months of testing. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08824983
• Corporate Authors:

  Industrial Fabrics Association International

  345 Cedar Building, Suite 450
  St Paul, MN  United States  55101-1088
• Authors:
  • Newkirk, D D
• Publication Date: 1984

Media Info

• Features: Figures; Tables;
• Pagination: p. 23-25
• Serial:
  • Geotechnical Fabrics Report
  • Volume: 2
  • Issue Number: 1
  • Publisher: Industrial Fabrics Association International
  • ISSN: 0882-4983

Subject/Index Terms

• TRT Terms: Compression; Creep; Drainage; Geotextiles; Load tests; Loads; Nonwoven materials; Porosity; Protection; Repeated loads; Tests; Wear
• Uncontrolled Terms: Membranes
• Old TRIS Terms: Membranes (Biology)
• ITRD Terms: 5532: Compression; 4732: Creep (mater); 4568: Geotextile; 5567: Load; 4558: Nonwoven material; 5938: Porosity; 5588: Repetitive loading; 6255: Test; 5293: Wear
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology; Materials; Security and Emergencies; I35: Miscellaneous Materials; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 00394581
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jul 31 1985 12:00AM