THE NOTION OF GEOTEXTILES AS SEPARATORS IN ROADS

The paper briefly reviews a limited number of case histories of field trials and laboratory studies to demonstrate those effects attributable to separation and those associated with other geotextile functions such as reinforcement, drainage and filtration. Although separation may be present in static or dynamic situations, lack of experimental data limits the study to the more widely researched field of temporary and permanent pavements. Results show that a geotextile at the sub-base/subgrade interface does not have a unique function and varies according to the type of construction and subgrade. Reinforcement and macro-separation are the prime functions of unbound granular material over a weak subgrade. Failures are often associated with slippage or tearing of the fabric and can be due to inadequate anchorage or design of overlap. Over stronger subgrade, the geotextile could be a dynamic filler or micro-separator. Many recent pavement failures have been attributed to the incursion of fines into high permeability granular sub-bases. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00174653
• Corporate Authors:

  Foundation Publications Limited

  7 Ongar Road
  Brentwood CM15 9AU, Essex,   England 
• Authors:
  • INGOLD, T S
  • Crowcroft, P
• Publication Date: 1984-1

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 27-34
• Serial:
  • GROUND ENGINEERING
  • Volume: 17
  • Issue Number: 1
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0017-4653

Subject/Index Terms

• TRT Terms: Anchorages; Defects; Design; Drainage; Failure; Field studies; Filtration; Geotextiles; Interfaces; Laboratory studies; Material reinforcement; Reinforcing materials; Separators; Subbase (Pavements); Subgrade (Pavements); Tearing
• Uncontrolled Terms: Slippage; Subbase; Use
• ITRD Terms: 3420: Anchorage; 5238: Defect (tech); 9011: Design (overall design); 5520: Failure; 4568: Geotextile; 5429: Interface; 3471: Reinforcement (in mater); 2961: Roadbase; 2950: Subgrade; 9084: Use
• Subject Areas: Design; Geotechnology; Highways; Hydraulics and Hydrology; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00389520
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Oct 30 1984 12:00AM