Medium Curing (MC) or Cutback Bitumen
Medium Curing (MC) or Cutback bitumen is produced in the form of liquid at room temperature. It is manufactured by diluting bitumen in petroleum hydrocarbons (Kerosene). The purpose is to be able to spray the product without the need of melting units or any heating equipment’s. Once the application of product is over, the solvent evaporates and bitumen remains as solid form.
MC Datasheet
| PROPERTY | MC-30 | MC-70 | MC-250 | MC-800 | MC-3000 | |||||
| Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | |
| Kinematic viscosity at 60 °C [140 °F], mm2/s | 30 | 60 | 70 | 140 | 250 | 500 | 800 | 1600 | 3000 | 6000 |
| Flash point (Tag open-cup), °C [°F] | 38 [100] | – | 38 [100] | – | 66 [150] | – | 66 [150] | – | 66 [150] | – |
| DISTILLATE TEST | ||||||||||
| VOLUME PERCENT OF TOTAL DISTILLATE to 360 °C [680 °F]: | ||||||||||
| To 225 °C [437 °F] | – | 35 | – | 25 | – | 20 | – | – | – | – |
| To 260 °C [500 °F] | 30 | 75 | 10 | 70 | 5 | 55 | – | 40 | – | 15 |
| To 316 °C [600 °F] | 75 | 95 | 65 | 93 | 60 | 90 | 45 | 85 | 15 | 75 |
| Residue from distillation to 360 °C [680 °F], | 50 | – | 55 | – | 67 | – | 75 | – | 80 | – |
| PERCENT VOLUME BY DIFFERENCE | ||||||||||
| TEST ON RESIDUE FROM DISTILATION | ||||||||||
| Viscosity at 60 °C [140 °F], Pa·s *A | 30 | 120 | 30 | 120 | 30 | 120 | 30 | 120 | 30 | 120 |
| Ductility at 25 °C [77 °F], cm | 100 | – | 100 | – | 100 | – | 100 | – | 100 | – |
| Solubility, % | 99 | – | 99 | – | 99 | – | 99 | – | 99 | – |
| Water, % | – | 0.2 | – | 0.2 | – | 0.2 | – | 0.2 | – | 0.2 |