What technical requirements define polymer modified bitumen wikipedia dictionary for asphalt or bitumen modification?

Polymer modified bitumen (PMB) is defined by several technical requirements, including viscosity, elasticity, and temperature susceptibility. Key specifications often include the use of specific polymers, such as SBS or EVA, to enhance performance characteristics like adhesion, flexibility, and resistance to aging. Additionally, PMB must meet standards for softening point, penetration, and ductility to ensure optimal performance in various environmental conditions, contributing to improved durability and longevity of asphalt pavements.