The author reports that the bituminous joint sealing materials prepared in accordance with the current terms of delivery valid from July 1966, which incorporate asbestos fibre additives, have not proved satisfactory in flexible bridge surfacings because of their low ductility under cold conditions. A considerably better degree of ductility at low temperatures is demonstrated by joint materials used in the USA and in Switzerland, but these may not be overheated. For pre-coating, joint shape and joint maintenance, the following recommendations are given. The pre-coating solution should be dried before the joint sealing; longitudinal joints and gussasphalt which are not subject to traffic should have joint widths of 3 cm. Furthermore, it is best to provide separating layers (fibreglass or sand) between the joint materials of the protective layer and the wearing course. The joints of bridge surfacings should be subjected to surveillance in the spring and summer of each year. Where renewal of the joint sealing material is necessary the damaged material must first be removed and exposed cracks in the joint must be cleaned out. /TRRL/

  • Corporate Authors:

    Verlagsgesellschaft Rudof Mueller

    Stolberger Strasse 84
    D-5000 Koeln-41,   Germany 
  • Authors:
    • Vonlen, OML
  • Publication Date: 1976


  • German

Media Info

  • Features: Figures;
  • Pagination: p. 13-5
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00195203
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Jul 11 1979 12:00AM