What technical requirements define polymer modify asphalt for asphalt or bitumen modification?

Polymer-modified asphalt (PMA) requires specific technical parameters to ensure optimal performance. Key requirements include the selection of compatible polymers, such as SBS or EVA, which enhance elasticity and temperature resistance. The modification process should achieve a uniform dispersion of the polymer within the bitumen matrix. Additionally, the viscosity, softening point, and penetration grade of the modified asphalt must meet industry standards to ensure durability, adhesion, and resistance to deformation under load and temperature fluctuations.