For some time now asphalt pavements of heavily-trafficked roads have been subjected to a type of surface damage which can hardly be assigned to abrasion alone. These patterns of damage are called wave-formations and can appear as transverse, symmetrical irregularities (corrugations) close to the stop line at light controlled junctions, or as longitudinal cavities (ruts) at places with slow, heavy and lanebound traffic. In order to find out what causes this sort of damage, field-studies and laboratory tests followed by full-scale experiments were carried out. This investigation, being more empirical than theoretical, is presented in the form of photographs of damaged areas, diagrams with results from tests and analyses and cross-sections of the pavements in the full-scale experiment, together with a description of methods used, comments and conclusions. The results showed that "normal", dense-graded types of pavements, rich in asphalt, are unsuitable for areas mentioned above with the special types of loads they are subjected to. Minor disturbances in production easily lead to instabilities in materials. It is therefore recommended that pavements at such places be made of materials having a stability relying less on the binding ability of the asphalt and more on the internal friction of the aggregate.

  • Corporate Authors:

    Svenska Byggnadsenreprenoerfoereningen

    P.O. Box 27029
    Stockholm 27,   Sweden 
  • Authors:
    • Tyllgren, P
  • Publication Date: 1978


  • Swedish

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: 149 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184483
  • Record Type: Publication
  • Source Agency: Swedish National Road and Traffic Research Institute
  • Report/Paper Numbers: Report N20 Monograph
  • Files: ITRD, TRIS
  • Created Date: Mar 14 1979 12:00AM