Used tire disposal has been a growing issue all over the world
because the complex composition and structure of tire rubber
and its additives make it highly resistant to natural degradation.
Over 285 million used tires were scrapped each year and around
300 million tires were estimated to be stockpiled at the end of
2001 At the end of 2007, state regulatory agencies
reported that 128.36 million scrap tires remain in stockpiles, a
reduction of million tires from 2005 (Scrap Tire Markets in the United
States 9th Biennial Report, Rubber Manufacturers Association,
2009,Most scrapped tires were
used for landfills. Due to the increasing amounts of rubber waste
and limited landfill capabilities, innovative methods of recycling
and reuse of waste tires need to be developed.
Numerous efforts have been made to utilize the used tires effectively
and environmentally. A method to use the scrapped tires for
leachate drainage layer materials was developed by