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What technical requirements define app polymer modified bitumen for asphalt or bitumen modification?
Polymer modified bitumen (PMB) must meet specific technical requirements for optimal performance in asphalt applications. Key criteria include enhanced elasticity, improved temperature susceptibility, and increased resistance to aging and deformation. The polymer content typically ranges from 3% to 8%, with common types being SBS (styrene-butadiene-styrene) and EVA (ethylene-vinyl acetate). Additionally, PMB should exhibit a high softening point and low penetration value to ensure durability and stability under varying environmental conditions. Compliance with relevant standards, such as EN 14023, is also essential.
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