Butadiene-acrylonitrile rubbers have been shown to be very effective modifiers for road tars from both high- and low-temperature carbonization sources. Unlike many other rubbers and synthetic polymers, they produce modified tars of high thermal stability which can withstand storage at high temperature for long periods and thus are particularly suited to surface-dressing applications where long delays may occur before a binder is actually used. Previous reports described the first road trial in Sheffield in 1972, and gave details of the laboratory study of several rubber/tar combinations, and of a second surface-dressing trial on the B5305 at Sebergham in Cumbria. The performance of the dressing at Sebergham prompted further trials on heavier trafficked roads, the A591 at Dunmail raise and the A592 between Troutbeck and the Kirkstone Pass Inn, which are reported here. Materials, equipment and sampling and inspection procedures are described in detail. Results show that the surface dressings of rubber modified tars successfully withstood an early period of hot weather combined with heavy holiday traffic. /TRRL/

  • Corporate Authors:

    British Carbonization Research Association

    Carbonization Research Center
    Chesterfield, Derbyshire S4Z6J5,   England 
  • Publication Date: 1978-12

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 13 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00196953
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: Research Report 58 Monograph
  • Files: ITRD, TRIS
  • Created Date: Sep 29 1979 12:00AM