FIBRE MATS AS REINFORCEMENT IN SITE ROADS CONSTRUCTED ON FINE-GRAINED SUBSOILS. PART REPORT

FIBERMATTA SOM FOERSTAFRKNING AV TRASNPORTVAEG PAA FINKIRNIG UNDERGRUND. DELRAPPORT

Fibre matting is sometimes used below the gravel base course on roads constructed on fine-grained soils of low bearing strength in order to prevent mixing between subsoil and base course. In order to find whether use of fibre mats on such subsoils will cut construction and maintenance costs, tests were made on site roads constructed on a fine-grained subsoil of low water content. Mats of polyester, polypropylene and polyamide, in thicknesses varying from 0.3 to 4 mm, were used. A loaded dumper of 11.6 ton front and 19.4 ton rear axle weight was used. It was found that when a mat was installed the number of passes up to failure of a 40 cm gravel road increased from 470 to 600. No difference was found between different types of mat. The cost/sq M of a site road of 40 cm with a mat is skr 14.50-16.50. This is the cost of a 60 cm road without matting, which carries over twice the number of passes before collapse. On a fine-grained subsoil of low water content (20-40%) it is thus uneconomical to use mats, but at higher water contents they are probably useful as they prevent admixture of wet subsoil. /TRRL/

  • Corporate Authors:

    Svenska Byggnadsenreprenoerfoereningen

    P.O. Box 27029
    Stockholm 27,   Sweden 
  • Publication Date: 1977

Language

  • Swedish

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 49 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184393
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: Jan 13 1979 12:00AM