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.
Asphalt Durability in Extreme Weather Conditions
As road networks are exposed to increasingly severe weather patterns, the demands placed on asphalt pavements continue to grow. Longer heat waves, heavier rainfall events, wider seasonal temperature swings, and increased traffic loads are all contributing to accelerated pavement deterioration. For agencies and contractors, the challenge is to formulate asphalt mixtures capable of maintaining performance throughout decades of environmental exposure. Achieving greater asphalt durability in [...]
