Road American
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Polymer modified bitumen (PMB) must meet specific technical requirements, including enhanced elasticity, improved temperature susceptibility, and increased resistance to aging and deformation. Key parameters include the polymer type (e.g., SBS, EVA), the modification level (typically 3-10% by weight), and performance indicators such as the Softening Point, Penetration, and Dynamic Shear Rheometer (DSR) tests. Additionally, PMB should exhibit superior adhesion properties and durability under various environmental conditions to ensure optimal performance in asphalt applications.
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