Statistical data are presented to define the magnitude of the scrap tire disposal problem in the U.S. It is generally believed that between 180 million and 200 million scrap tires are being generated annually. The constraints of an ideal solution are presented as a basis for a critical review of current and proposed scrap tire disposal procedures. The options of source control, landfill, and retreading are considered. Physical procedures for disposing of scrap tires are discussed: size reduction (mechanical and cryogenic grinding), and the use of the ground rubber; fish reefs; barriers (e.g. highway abutments, mats to prevent soil erosion, floating breakwaters); and miscellaneous splitter industry uses (e.g. gaskets, shims, and ribbons from which floor mats and dock bumpers are made), and trivial uses (e.g. fabrication of sandals, playground equipment). Chemical procedures examined include: reclamation; pyrolysis (inert atmosphere, oxidative pyrolysis, steam atmosphere, molten salt baths) and pyrolysis reactor design; use as asphalt component; and depolymerized scrap rubber. Incineration of scrap tires directly or in the shredded form as a conventional fuel supplement is discussed. It is concluded that because of disposal problem complexity (e.g. collection logistics, market availability and location, economics, environmental effects), no one procedure should be used exclusively. Landfill disposal is a waste of natural resources. For the immediate future, excess scrap rubber is best disposed of by incineration as a fuel supplement.

  • Availability:
  • Supplemental Notes:
    • Presented at SAE Congress and Exposition, Detroit, 26 February-2 March 1979.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Kay, E L
    • Laman, J R
  • Publication Date: 1979

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00390979
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 790301, HS-028 691
  • Files: HSL, USDOT
  • Created Date: Dec 30 1984 12:00AM