Road American
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What technical requirements define tire rubber modified asphalt concrete for asphalt or bitumen modification?
Tire rubber modified asphalt concrete requires specific technical parameters for effective performance. Key requirements include the appropriate rubber content, typically between 5% to 20% by weight of the binder, and proper processing temperatures, usually between 180°C to 200°C. The rubber must be finely ground to enhance dispersion and compatibility with the asphalt. Additionally, the modified binder should meet performance grading specifications, such as PG 76-22, to ensure durability and resistance to deformation and cracking under varying temperatures.
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