Y1G. A NEW METHOD OF ROAD MAINTENANCE

Y1G. EN NY METOD ATT UNDERHAALIA VAARA VAEGAR

At the beginning of the seventies development work began on binding the top layer of gravel roads with a petroleum product. A new maintenance method designated y1g, single-course gravel surface dressing, is the result. It is intended for roads carrying between 100 and 500 vehicles/amd. Roads so treated must be of satisfactory strength and drainage, and cross-fall must be adjusted by spreading about 50 cubic metres of gravel per km prior to surface dressing. The binder is mostly p060 road oil. Some sa60 and sa75 bitumen solutions and bitumen emulsion have also been tried. Rate of application is about 1.5 kg/square metre. Gravel used is normally graded 0-18 mm, the rate being 10-15 l/square metre. The gravel is rolled into the binder. The cost in 1978 was about skr 3/square metre. It appears that (1) durability of a y1g dressing is around 5 years, (2) roads so treated must have good bearing capacity and not be subject to frost heave, (3) restrictions on permissible loads should be imposed during thaw, (4) bleeding occurs under some conditions, (5) road users favour this method, (6) maintenance is usually confined to repairing potholes, (7) costs appear to be same as gravel road maintenance costs over a 5-year period. Friction is improved. (TRRL)

  • Corporate Authors:

    Foereningen foer Bituminoesa Belaeggningar

    Industriaatan 2B
    Stockholm,   Sweden 
  • Authors:
    • Jordeby, Y
  • Publication Date: 1979

Language

  • Swedish

Media Info

  • Pagination: 5 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00315204
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: Meddelande 7:79
  • Files: ITRD, TRIS
  • Created Date: Oct 27 1980 12:00AM