DEFORMATIONER I ASFALTBELAEGGNINGAR - ETT ANTAL UNDERSOEKNINGSMETODER FOER TILLAEMPNING PA ETT PRAKTIKFALL (RUT DEFORMATIONS IN ASPHALT PAVEMENTS - SOME METHODS OF INVESTIGATION APPLIED TO A PRACTICAL CASE)

Rut deformations are more and more often observed on the Swedish main road network. In addition to abrasion, permanent deformations in one or several of the underlying pavement courses have, in many cases, contributed to what has occurred. In the present paper, a number of different methods of investigating where in the layers instability has occurred, which should influence the choice of maintenance procedures, are presented. These methods are then applied on E-4 at Granna, where heavy rut formations have occurred. Instability was found in an intermediate asphalt layer. The alternative of removing the unstable course and replacing it with new stable mixes should be examined. Another conceivable step is to furnish the pavement with a stable wearing course of 80-100 kg/square meters or more.

• Supplemental Notes:
  • Text in Swedish; abstract and summary in Swedish and English. Also pub. as ISSN-0347-6030.
• Corporate Authors:

  Swedish National Road and Transport Research Institute (VTI)

  Linköping,   Sweden  SE-581 95

  (Sweden).

  ,    
• Authors:
  • Bjoerklund, A
  • Hultqvist, B A
• Publication Date: 1980

Media Info

• Pagination: 86 p.

Subject/Index Terms

• TRT Terms: Base course (Pavements); Bitumen; Construction; Core samples; Deformation; Flexible pavements; Maintenance; Structural design
• Old TRIS Terms: Coring
• Subject Areas: Construction; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 00337191
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: VTI-200
• Files: NTIS
• Created Date: Aug 15 1981 12:00AM