OPTIMUM ROLLER SPEED IN FLEXIBLE PAVEMENT COMPACTION

OPTIMAL VAELTHASTIGHET VID PACKNING AV ASFALTBELAEGGNING

The aim of this project was to determine the influence of roller speed on compacting capability and on the number of passes needed to obtain the lowest satisfactory degree of compaction. By these means it is possible to determine the optimum roller speed. The optimum roller speed is the speed allowing the largest surface capacity for obtaining a certain degree of compaction. Two field tests were carried out. During the tests two of the most common types of rollers in Sweden have been used - a vibrating tandem roller (dynapac cc 41) and a three-wheel roller (advance). The results from the tests have shown: (1) the speed has a great effect on the compacting capability of the roller. At a speed of 9 km/h and more the compacting capability is so poor that under normal compacting conditions it must be regarded as practically impossible to achieve a satisfactory compaction irrespective of the number of passes. (2) the optimum operating speeds for both types of rollers are about 6 km/h if the compacting conditions are fairly good. If the conditions are unfavourable, e.g. Cold and/or windy weather, thin pavements (less than 60 kg/sq M), the optimum roller speed diminishes to about 3 km/h. /TRRL/

  • Corporate Authors:

    Svenska Byggnadsenreprenoerfoereningen

    P.O. Box 27029
    Stockholm 27,   Sweden 
  • Authors:
    • Bjoerklund, A
    • Lilja, B
    • Liljedahl, B
    • Persson, E
  • Publication Date: 1978

Language

  • Swedish

Media Info

  • Features: Figures; Tables;
  • Pagination: 42 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00195513
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: SBEF Report No. 21 Monograph
  • Files: ITRD, TRIS
  • Created Date: Sep 15 1979 12:00AM