COMPACTIBILITY AND STABILITY OF ASPHALT CONCRETE HAB 16 T OF DIFFERENT COMPOSITIONS. A STUDY WITH THE AID OF MARSHALL SPECIMENS

PACKNINGSBENAEGENHET OCH STABILITET HOS ASFALTBETONG HAB 16 T AV OLIKA SAMMANSAETTNINGAR. EN STUDIE MED HJAELP AV MARSHALLKROPPAR

This investigation was performed above all to study the compactibility of dense asphaltic concrete (HAB 16) of various compositions during compaction in accordance with the Marshall method. Marshall stability and flow value were also measured on most of the compacted specimens. A connection between Heukelom's and Arand's compactibility factor was verified, which facilitated the evaluation. For all but the mineral aggregates used an increase addition of bitumen led to a greater compactibility. The particle shape of the mineral coarser than four mm proved to have an influence on the compactibility. The stability tests revealed that Marshall specimens with two percent air voids and/or 85 per cent voids filled with bitumen and/or 90 per cent voids filled with filler and bitumen obtained a flow value of about four mm. This was independent of the aggregated used. A mix design procedure for stable wearing courses ought to be based on a realistic method of compaction which represents post-compactoin by traffic as well as compaction by rollers in respect to the volumetric relations, the compactibility and the particle orientation of the pavement. /TRRL/

Language

  • Swedish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00196886
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: VTI Rapport NR 169 Monograph
  • Files: ITRD, TRIS
  • Created Date: Sep 29 1979 12:00AM