TILL IN SWEDISH ROAD CONSTRUCTION

The roads in Sweden are mostly constructed on a base of till with different grain size distribution and frost susceptibility. The frost heaving of tills as well as of other soils was studied during the 1920's and 1930's by Beskow. He also investigated the possibility of mixing different proportions of the most common till and gravel to be used in road pavements. From these investigations, the grain size distribution of the perfect gravel was designed. Recommendations for alternative constructions containing layers of cement-stabilized till have been proposed during the 1970's. The interest in finding and using coarse-grained till as an alternative for gravel and crushed bedrock has increased during the last few years. In the future, the effect of freeze-thaw processes in till must be solved. The effect of drainage in different types of till must be studied. The identification, information and instruction about variations in the mechanical properties of till, e.g. the content of boulders and stones must be presented and clarified in a cooperative manner between the geologist and the geotechnical engineer. (Author/TRRL)

Media Info

  • Features: Figures; References;
  • Pagination: 4 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00394334
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: N94 Monograph
  • Files: ITRD, TRIS
  • Created Date: Jul 31 1985 12:00AM