Used tires can be repurposed for various applications, contributing to environmental sustainability and resource conservation. Here are the key uses:
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Construction Materials: Used tires can be integrated into construction materials, particularly in environmentally-friendly buildings. They can also be repurposed as bark mulch in gardens, helping to retain moisture and prevent weed growth.
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Pyrolysis Products: Through pyrolysis, waste tires are thermochemically treated to break down into valuable by-products such as pyrolysis oil, synthetic gas, and char. These materials can then be used in the production of hot melt asphalt, crumb rubber modifier, recycled asphalt pavement, and aggregate for cement concentrate.
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Recycling for New Tires: While it is technically possible to use recycled tire material in the production of new tires, there are limitations due to safety and performance concerns. New tires typically cannot contain more than 5% recycled material, and those with higher amounts of recycled content are often considered inferior due to reduced traction and shorter tread life.
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Industrial Applications: Used tires can be processed into hydraulic hot press rubber mats and other rubber products, which are used in various industrial settings. These products are made using specialized machinery that can accommodate specific requirements, ensuring the effective reuse of tire materials.
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Landfill and Other Uses: Despite these recycling efforts, a significant portion of used tires still ends up in landfills. Additionally, some tires are used in miscellaneous projects, though the specific applications are not detailed in the provided references.
Overall, the use of used tires in various industries and applications not only helps reduce waste but also contributes to the development of sustainable materials and practices. However, the limitations in recycling tires for new tire production highlight the need for further research and development in this area to enhance safety and performance standards.
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