EVALUATION OF RUBBERIZED LIMESTONE FILLER IN ASPHALT PAVING MIXTURES

The addition of rubber to asphalt paving should improve elasticity, reduce susceptibility to temperature changes and increase the resistance to moisture damage. The paper describes the results from experiments with a rubberized filler prepared according to the procedure of Hutchinson and Birchall whereby carboxylated butadiene ruber is chemically bound to calcium carbonate and mixed with asphalt in the normal way. Results showed that the relatively high stiffening effect on the binder is related to its high surface activity or interfacial energy. There was a pronounced reduction in the stripping of asphalt aggregate surfaces when immersed in water compared with uncoated limestone. The Marshall stability increased below a limiting ratio of rubberised to normal filler. A 40/60 per cent ratio by weight of rubberised filler to regular filler significantly improved the tensile properties indicating greater adhesion. (TRRL)

  • Availability:
  • Corporate Authors:

    American Chemical Society

    Rubber Division, University of Akron
    Akron, OH  United States  44325
  • Authors:
    • Bissada, A F
    • Anani, A A
  • Publication Date: 1984-3

Media Info

  • Features: References; Tables;
  • Pagination: p. 1-18
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00389526
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Oct 30 1984 12:00AM