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.

The Role of Asphalt Additives in Roadway Paving

Asphalt continues as a cornerstone of road construction globally, with 90% of roads paved globally using asphalt. As infrastructure demands accelerate, environmental standards are also on the rise. However, traditional asphalt comprised of only bitumen and aggregate often falls short of modern expectations for performance, durability, and sustainability. Asphalt additives are purpose-designed materials that can elevate pavement [...]

By Kate Brough|2025-10-31T15:33:41+00:00October 31st, 2025|Categories: Blog, Resource Series|Tags: ButaPhalt, NuMIXER, PGXpand, PHALANX, ReLIXER, ReNUBIT|0 Comments

Optimizing Asphalt Performance with Advanced Polymeric Additives

In modern roadway construction, the choice of polymeric additives plays a critical role in balancing performance, and workability. Traditional elastomeric and plastomeric polymers have long been used to enhance asphalt binders when developing polymer modified bitumen (PMB) mixes. However, advancements in polymer technology, such as the introduction of bitumen-friendly polymeric additive PGXpand®, are reshaping how engineers approach high-performance [...]

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 [...]