Polyurethane-Modified Asphalt

Product Description

A next-generation binder system that chemically cross-links with base bitumen to deliver high-viscosity, low-VOC, long-life asphalt mixes. It raises rutting and fatigue resistance, improves aggregate adhesion and moisture tolerance, and enables lower production temperatures for energy savings.

Key Benefits

• High durability: Superior rutting resistance at high temps; improved low-temperature crack resistance.

• Strong adhesion & moisture resistance: Better stripping resistance and wet cohesion.

• Lower emissions & energy use: Typically allows 10–30 °C lower mixing/compaction temps.

• Stable & versatile: Works with SBS/SBR or as a stand-alone modifier for dense, SMA, OGFC, and RAP-rich mixes.

Typical Performance

• Softening point ↑, penetration ↓ vs. base bitumen.

• Elastic recovery and MSCR improved.

• High viscosity grade achievable at moderate dosage.

Recommended Dosage

• 2–6 % by weight of binder (optimize by lab design: PG target, traffic/climate, RAP content).

How to Use

• Preheat base bitumen to the plant’s standard temperature (often lower than SBS systems).

• Add modifier under agitation; shear-mix 20–40 min until homogeneous.

• Quality check: Verify viscosity/softening point; adjust dosage or temperature as needed.

• Produce mix (dense/SMA/OGFC/RAP) at reduced temperature; compact per job spec.

Compatibility

• Works with common aggregates and anti-strip agents; compatible with RAP and WMA additives.

Packaging & Storage

• 200 kg steel drums or 1000 L IBCs.

• Store cool/dry, sealed; shelf life ~12 months

• Avoid moisture ingress.

Safety

• Industrial chemical—use PPE (gloves, goggles), provide ventilation, avoid skin contact. Refer to SDS.

• Ideal for highways, urban arterials, bus lanes, heavy-load zones, and long-life pavements seeking faster ROI with lower emissions.