THE DURABILITY AND FUNCTIONAL CHARACTERISTICS OF GEOTEXTILES IN REINFORCING A GRAVEL ROAD DAMAGED BY FROST: FINAL REPORT

GEOTEXTILIERS HAALLBARHET OCH FUNKTIONELLA EGENSKAPER VID FOERSTAERKNING PAA TJAELSKADAD GRUSVAEG: SLUTRAPPORT

The vti has carried out a number of field trials on commission by the national road administration in order to investigate the durability to mechanical abrasion of a number of geotextiles used in strengthening a road, damaged by frost. At the same time, the effect on the transport of water of geotextiles lying beneath frozen layers has been studied in field and laboratory investigations. The field trials have been carried out on test stretches laid on road 1068 in the province of vaesternorrland in 1982. The laboratory tests have been carried out at the vti during the period 1982-1984. The field trials took place mainly during 1982-1985, but a final inspection of the condition of the geotextiles in the road was made during summer 1988. With regard to durability, the field trials, which covered 10 geotextiles, have shown that on the test stretches with a covering layer more than 20 cm thick, most of the geotextiles tested which had been in place for 6 years remained intact. From other similar tests it has been found that geotextiles extracted from test stretches with 10 cm overlying layers were completely worn out. Also some geotextiles that had been in use for 3-3+ years and with 20-25 cm thick layers on top showed abrasion damage in the form of fabric breaking away. Certain differences in durability were found in this study. The effects of water transport in frozen layers on top of geotextiles which were found in laboratory investigations could not be demonstrated in field trials. In laboratory tests of new geotextiles of non-woven type and woven type with ribbon fibres, it was found that these had a capillary cutoff effect when the layers above the geotextiles froze. However, it was found that this effect was sensitive to bridging of fine material and required that the geotextiles remained intact. It is therefore doubtful whether the capillary cutoff effect observed can be utilised in such cases where the design requires a reliable capillary cutoff effect unless measures are taken to prevent damage to the geotextiles and infiltration of these by fine material.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03476049
• Corporate Authors:

  Swedish National Road and Traffic Research Institute

  Drottning Kristinas Vaeg 25
  S-11428 Stockholm,   Sweden 
• Authors:
  • Lindh, E
• Publication Date: 1989

Language

• Swedish

Media Info

• Pagination: 80 p.
• Serial:
  • VTI MEDDELANDE
  • Issue Number: 597
  • Publisher: Swedish National Road and Transport Research Institute (VTI)
  • ISSN: 0347-6049

Subject/Index Terms

• TRT Terms: Abrasions; Age; Capillarity; Durability; Field tests; Fines (Materials); Frost; Geotextiles; Laboratories; Pavement layers; Pavements; Properties of materials; Seepage; Strength of materials; Structural strengthening; Tests; Water
• Geographic Terms: Sweden
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology; Materials; Pavements;

Filing Info

• Accession Number: 00498237
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM