
PMB mixes have been popular for decades and are designed to maintain the integrity of the roadway while enhancing functional performance characteristics. Most virgin bitumen lacks the complete properties needed in quality to build high-performing roadways. Adding polymers to create a PMB can help strengthen and toughen the roadway surface. PGXpand®, a bitumen-friendly polymer additive, is uniquely designed to allow polymer modified bitumen (PMB) producers to boost the high temperature performance of the binder while maintaining low temperature properties. It minimizes SBS content, improves viscosity, supports higher filler loading, and provides better stability.
Improving PMB Performance with PGXpand Polymer Modifier
Polymer modification is an essential part of modern asphalt pavement design. As road networks are subjected to heavier traffic volumes, higher axle loads, and increasingly demanding environmental conditions, conventional binders can struggle to provide the durability required for longer service lives. To address these challenges, the asphalt industry has increasingly turned to polymer modified bitumen (PMB) systems to improve pavement performance. Today, polymer modified asphalt is widely used on highways, intersections, and other [...]
