Road American
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Asphalt modified racing requires specific technical standards for asphalt or bitumen modification to ensure optimal performance. Key requirements include the use of polymer-modified asphalt (PMA) for enhanced elasticity and durability, a minimum viscosity rating to withstand high temperatures, and specific aggregate gradation for improved traction. Additionally, the asphalt must have a controlled binder content to prevent excessive wear and maintain consistency during races, ensuring safety and competitive integrity on the track.
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