Cutback RC 70 for surface dressing and tack coats. Exported from Dubai.
A rapid-curing cutback bitumen with a low viscosity, so it sprays and penetrates easily. Applied without heating.
Fast-curing binder for quick turnaround
Cutback RC 70 is a rapid-curing cutback bitumen: penetration-grade bitumen thinned with gasoline or naphtha so it can be applied without heating. The grade name gives the minimum kinematic viscosity at 60°C (70 mm²/s).
Because the solvent is light and volatile, it evaporates quickly and the binder sets fast. This suits chip seals, tack coats and maintenance work that must reopen to traffic soon.
Black Rock Bitumen supplies Cutback RC 70 from Dubai to contractors, EPC companies and road maintenance agencies across Asia, Africa and the Middle East.
- Light solvent that evaporates quickly
- Fast setting for quick road reopening
- Applied without heating the bitumen
- Good adhesion to aggregate and old pavement
- Consistent quality in every batch
Cutback RC 70 specification
Typical specification for Black Rock Bitumen RC 70. Each batch is tested before shipment.
| Property | Test method | Unit | Min | Max |
|---|---|---|---|---|
| Kinematic viscosity at 60°C | ASTM D2170 | mm²/s | 70 | 140 |
| Flash point (Tag open cup) | ASTM D3143 | °C | 27 | – |
| Distillate to 190°C, % of total distillate | ASTM D402 | vol.% | 10 | – |
| Distillate to 225°C, % of total distillate | ASTM D402 | vol.% | 50 | – |
| Distillate to 260°C, % of total distillate | ASTM D402 | vol.% | 70 | – |
| Distillate to 315°C, % of total distillate | ASTM D402 | vol.% | 85 | – |
| Residue from distillation to 360°C | ASTM D402 | vol.% | 55 | – |
| Penetration of residue at 25°C | ASTM D5 | 0.1 mm | 80 | 120 |
| Ductility of residue at 25°C | ASTM D113 | cm | 100 | – |
| Solubility in trichloroethylene | ASTM D2042 | wt.% | 99.0 | – |
| Water content | ASTM D95 | vol.% | – | 0.2 |
Tested and certified. Every shipment includes a Certificate of Analysis and MSDS. Batches are tested to ASTM methods for viscosity, flash point, distillation, residue properties and water content.
Where Cutback RC 70 is used
Typical uses for Cutback RC 70.
Tack coat
Bonds a new asphalt layer to the existing surface.
Surface dressing
Chip seal and spray applications for road surfacing.
Patching and repair
Cold-applied pothole and utility cut repairs.
Prime coat
Penetrates and seals a granular base before the asphalt layer.
Cold mix
Mixed with aggregate at ambient temperature for paving and maintenance.
Compare with other rapid-curing cutback grades
Our packaging
Secure options for every shipment: economical Jumbo Bags, robust steel Drums, or high-volume bulk containers.
Payment terms for smooth transactions
Two straightforward ways to pay, built for international bitumen trade. Questions about your order or inquiry? Our team will walk you through them.
Get in touchTT method
The buyer pays 30% in advance, with the balance against the B/L draft (CFR) or customs documents (FOB).
LC at sight
100% irrevocable, non-transferable, confirmed LC at sight, subject to bank approval by Black Rock Bitumen.
Cutback RC 70 MSDS
Frequently asked questions
Quick answers on Cutback RC 70 properties, use and supply.