Road construction is mainly a mass haulage problem. The finished product must stand up to traffic load and intensity and meet safety requirements. It must also resist wear. Most material is obtained from cuts or borrow pits. Soils are classified in 5 groups on the basis of particle size distribution. In construction, planning of transport is very important, and earth cutting and moving plant must also be considered. Employment must also be kept going all round the year, which means that most excavation and haulage must be done in winter, with all the problems this entails. Large quantities of gravel and sand were previously used but rock is being increasingly employed not only for embankments but also to produce aggregate for the base. Crushed rock pavements are often cheaper than gravel ones, since rock is stronger and pavement thickness can be reduced. Pavement thickness can also be reduced by improving the subbase. Methods of stabilisation are described. Existing gravel roads used to be improved by placing another course, but in-situ cement stabilisation combined with the provision of a wearing course or surface dressing is now employed. /TRRL/

  • Corporate Authors:

    Svenska Vagforeningen

    Fridhemsgatan 15
    11240 Stockholm K,   Sweden 
  • Authors:
    • Stroem, E O
  • Publication Date: 1975


  • Swedish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00132256
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Files: ITRD, TRIS
  • Created Date: Jul 13 1976 12:00AM