Worldwide, efforts are underway to address the issue of used tires. Tires are not biodegradable, so they need to be recycled and repurposed rather than discarded.
The problem of scrap tires is far worse in the USA than in Europe. In the USA, an estimated 300 million tires are disposed of annually, a figure that is absolutely staggering.
Thankfully, there are currently several ways in which tires are recycled. One use is in creating rubberized asphalt for highways. According to the EPA, 7.4 million tires were ground and used as a component in new highways in 2005. This not only recycles scrap tires, but also lowers the cost of highway construction.
Growing markets exist for a majority of the scrap tires produced every year that are supported by state and local government. Tires are also often recycled for use on basketball courts and in new shoe products. Other programs turn tires into ground rubber or rubber shreds, used to create ground cover for playgrounds, backfill for civil engineering programs, garden mulch, erosion control barriers or drainage foundations around buildings.
The uses of the rubber recovered from the recycling processes are myriad — everything from carpet underlay to shoe soling, from road construction to resurfacing of sports and play areas. The tires are either shredded or reduced to a fine crumb, which is then sold to be used in a variety of applications.
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