A modified binder is a bitumen or tar to which one or several substances have been added, more often macromolecular substances, with a view to modifying the intrinsic properties of the basic binder. The additives used belong to two main types: one-dimensional and three-dimensional polymers. Tars will be modified by addition of 5 to 6% of vinyl polychloride or of 20 to 40% of epoxy or polyurethane. The additives for bitumen are (1) polymers with linear characteristics: crystalline or elastomeric, and (2) copolymers: statistical or sequential. The percentage will vary between 5 and 25%, which enables the plasticity interval to be increased, thermal susceptibility to be decreased, rheological and thermal characteristics to be modified, and possible deformation at low temperature to be achieved. Modified binders can be applied in the same way as basic binders and can be used for the preparation of cold-coated or hot-coated materials, surface dressings, hydraulic operations, industrial uses. /TRRL/

  • Corporate Authors:

    Revue Generale des Routes

    9 rue Magellon
    Paris,   France 
  • Authors:
    • Ajour, A M
  • Publication Date: 1977-11


  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00300217
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Nov 27 1979 12:00AM