Asphalt Plastomer Pellets
What Are Asphalt Plastomer Pellets?
Asphalt is widely used in construction, especially for road pavements and roofing. However, unmodified asphalt often lacks the physical characteristics required for high-performance applications. For example, its PG (Performance Grade) rating might be insufficient for certain climates.
The PG rating is determined by the average seven-day maximum and single-day minimum pavement design temperatures. The maximum temperature is measured 20 mm below the pavement surface, while the minimum is measured at the surface. A typical PG rating like 64-22 means the asphalt can perform at up to 64°C maximum and -22°C minimum temperatures.
To improve asphalt performance, plastomer additives are used. Asphalt plastomer pellets, when added in approximately 5% by weight, significantly enhance the physical properties of asphalt mixes, increasing durability and resistance to extreme weather conditions.
Usage of Asphalt Plastomer Pellets
- Acts as a crosslinking agent in modified asphalt compositions
- Increases G*/sin(δ) of the binders for better performance
- Reduces the phase angle of binders, enhancing elasticity
- Significantly prevents binder separation during storage
Specifications of Asphalt Plastomer Pellets
Property Value Color Black Form Granule Hardness 68–72 Density (gr/cm3) 1.53 Tensile Strength (MPa) 7 Elongation at Break (%) 200