The authors of this paper investigated several Indian roads, which failed prematurely due to poor drainage and ingress of moisture. The investigations suggest several remedial measures, and consider the effectiveness of chemicals used to handle the water sensitivity. Moisture damage occurs because of the breaking of the adhesive bond between the aggregate and the bitumen. The five ways in which this can happen are: detachment, displacement, spontaneous emulsification, pore pressure, and hydraulic scouring. Stripping of bitumen film from an aggregate is extremely complex and depends on many factors. Fatty acid amines with a long hydrocarbon chain are the most suitable anti-stripping agents; their basic requirements are listed. Using a newly devised procedure, three anti-stripping agents (Anstrip liquid, Anstrip powder, and Super-bond) were evaluated, according to these requirements. Tests were conducted with different proportions of anti-stripping agent in the bitumen. Estimates were made of the proportions of anti-stripping agent in the bitumen boiler and in the mix collected from the roadway. The agents were found to be effective and versatile, if used appropriately.

  • Availability:
  • Corporate Authors:

    Indian Roads Congress

    Jamnagar House, Shahjahan Road
    New Delhi,   India  110 011
  • Authors:
    • SHUTLA, R S
    • UPPAL, R
  • Publication Date: 1996-6


  • English

Media Info

  • Features: References;
  • Pagination: p. 29-36
  • Serial:
    • Indian Highways
    • Volume: 24
    • Issue Number: 6
    • Publisher: Indian Roads Congress
    • ISSN: 0376-7256

Subject/Index Terms

Filing Info

  • Accession Number: 00729731
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, ATRI
  • Created Date: Dec 26 1996 12:00AM