PGXpand Archives

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.

Additives, Binders, and Durability Challenges in Polymer Modified Asphalt

Infrastructure demands are evolving rapidly with roads subjected to heavier traffic loads, more extreme temperatures, and tighter project budgets. Traditional asphalt binders are increasingly challenged to meet these requirements, highlighting the need for additives that can deliver superior performance and longevity. Polymer modified bitumen (PMB), or polymer modified asphalt, incorporates engineered polymers into conventional bitumen to enhance [...]

Improving Rutting Resistance and Asphalt Pavement Durability

Rutting remains a threat to long-term asphalt pavement durability on a global scale. These depressions in the roadway surface that appear as grooves from wheel paths can occur due to repeated heavy traffic with, frequent start and stop, especially in climates with extreme high temperature. More than an inconvenience or imperfection, rutting can result in unsafe driving [...]

Video: 6 Ways to Cut Carbon Emissions in Asphalt Paving

TRANSCRIPT: Reducing carbon emissions in asphalt paving is an essential component of roadway infrastructure development and planning. Government agencies and municipalities, contractors, and producers are all exploring measurable ways to shrink the carbon footprint of roadway projects. Here are six of current trends in asphalt paving technology that aid sustainability goals. Lower Mix and Production Temperatures Using [...]

What is Polymer Modified Bitumen (PMB)?

Bitumen is relied on as the primary binder in asphalt mixes developed for roadway paving, with nearly 90% of the world’s road paved using the material. Despite its widespread use, bitumen as a sole source of binder in a mix has inherent shortcomings. On its own, bitumen can be susceptible to deformations as temperatures change including cracking in extreme [...]