Thin bituminous surfacings having a weight at laying of up to 50 kg/sq. M may form the top (wearing) course in new full-depth asphalt structures, may replace worn surfacings or may be used to improve polished surfacings. Thin surfacings should provide a safe and sufficiently wear- resistant carriageway, and at the same time protect the pavement from the penetration of water, de-icing salts and dirt. With appropriate selection of materials and mix design and careful laying and compaction, they are able to cope with traffic stresses, as long as roadbase and subsoil have adequate supporting strength. A description is given of several thin bituminous surfacings with their special features (laying quantities, particle mixtures, proportion of chippings, fillers, binder type and quantity, suitability for certain types of traffic). Surfacings in accordance with TV bit 5/67 for hot-laid asphaltic concrete and tar asphaltic concrete can also be used to finish bituminous MacAdam surfacings. Reference is made to the longer period the mixture can be stored in the case of graded and cold-laid thin surfacings. Surfacings of asphalt- and tar-mixed MacAdam need to be sealed by a surface dressing. The compression surfacings described are first compacted by traffic; this fault can be eliminated by the incorporation of thin Gussasphalt surfacings. Mastic asphalt carpets are dense immediately after laying. Reference is made to the "mastimac" surfacing, which was developed to cope with stresses from studded tyres and de-icing salts. From the prototype of a fine-particle surfacing of sand asphalt (TV bit 3/64) arose "micro-Concrete", through the addition of fine chippings. This range includes the tapisable surfacing developed in France, with its sand paper roughness, thin surfacings for steel carriageways with "oktoplast", the anti-steel studs asphalt "astiphalt", and the binder asmixture "prosable" for fine-particle bituminous surfacings. In conclusion the author deals with thin surfacings on sett pavements, and gives examples of them in Collogne and Munich. /TRRL/

  • Corporate Authors:

    Verlagsesellschaft Rudolf Mueller

    Stolberger Strasse 84
    D-5000 Koeln-41,   Germany 
  • Authors:
    • Bierhalter, W
  • Publication Date: 1972-6


  • German

Media Info

  • Features: Figures; References;
  • Pagination: p. 27-31
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00080491
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Mar 6 1975 12:00AM