REGENERATION OF ASPHALT SURFACES

REGENERIERUNG VON ASPHALT-DECKSCHICHTEN

The necessity to regenerate asphalt surfaces arises from a loss of skid resistance and of evenness caused by wear and tracking deformation. The simplest solution is to lay a new wearing course on the old. In those cases where levels do not allow it, or for material reasons, it is necessary to remove the old wearing course and exchange it for a new one. The processes for such an exchange are described. The simplest is to heat up the surface with infra-red heaters, plane off and follow up immediately with the laying of the new wearing course. Performances of 1 km per day are achievable. A better method is the recycling of the old surfacing material in-situ. Such a method has been developed in the usa under the title "repave". It uses special equipment which is manufactured in the USA (Cutler) and in Germany (Wirtgen, Voegele). Both machines have certain differences, perform technically well (evenness, compaction and skid resistance equivalent to new construction), costs are favourable (about 20 - 30% cheaper than relaying) and environmentally acceptable in that there is less hindrance to traffic (construction time is ca 50% shorter). Finally the voegele system is introduced, covering special equipment, changes and supplementary items, by which single machines are provided for reforming and making up (addition of new asphalt). The details of the construction of the reformer (working width 2.5 - 4 M, working speed 0.5 - 5.7 m/min, heating temperature 600 - 800 deg C (regulated without steps)) and of its requirements are described. /TRRL/

  • Availability:
  • Corporate Authors:

    Bertelsmann-Fachverlag

    Carl-Bertelsmann Strasse 270, Postfach 5555
    D-4830 Guetersloh,   Germany 
  • Publication Date: 1977-7

Language

  • German

Media Info

  • Features: Figures;
  • Pagination: p. 514-20
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00195218
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1979 12:00AM