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 Additives: Modern Chemistry Transforms Road Construction
The asphalt industry has undergone a significant transformation over the past few decades driven by advances in materials science, tighter performance requirements, and the increasing use of recycled materials. At the center of this evolution is a class of technologies broadly known as asphalt additives. Once considered optional enhancements, additives are now a core part of modern mix design, fundamentally changing how asphalt or [...]
