How is polymer modified bitumen grades applied in asphalt or bitumen modification processes?

Polymer modified bitumen (PMB) grades are applied in asphalt and bitumen modification processes to enhance performance characteristics. The modification involves blending bitumen with polymers, such as SBS or EVA, to improve elasticity, temperature resistance, and durability. This process typically occurs in a high-shear mixer, ensuring uniform dispersion of the polymer. The resulting PMB is then used in asphalt mixtures, providing superior resistance to deformation, cracking, and aging, ultimately extending the lifespan of road surfaces.