This article describes a study of the value of an impact energy approach for assessing the strength of road binders. A procedure is outlined for the determination of a standard impact energy in the brittle region and for the derivation from this of a single ratio by which a given binder can be compared directly with a standard binder. Results are given of the comparison with a coke oven tar. This standard impact energy ratio is shown to be a measure of a binder's resistance to traffic stresses at a given temperature. The data presented here as a measure of cohesive strength are in agreement with other more direct methods of measuring strength. The modification of coke oven tar with 1 1/2% polyvinylchloride is shown to increase the standard impact energy ratio by approximately 50% which is a measure of the resulting increase in width of the visco-elastic peak, i.e. an extension of the temperature range over which the binder exerts the maximum power of chipping retention. /TRRL/

  • Corporate Authors:

    Building and Contract Journals Linited

    32 Southwark Bridge Road
    London SE1 9EX,   England 
  • Authors:
    • Brig, DKH
  • Publication Date: 1973

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00083206
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jul 2 1975 12:00AM