Cutback Bitumen MC-250
Cutback agents are used to lower viscosity of bitumen when it is applied as a primer to the surface of a road pavement aggregate base course or substrate. Kerosene is used as a bitumen cutback agent at different concentrations according to local conditions and requirements.
The cutback bitumen is ideal for prime coat and cold applied because of easy uses and no need to thinning and heating.
Cutback bitumen MC250 consist of initial incorporation of asphalt into the surface of non-asphalt based course preparatory to any superimposed treatment of construction.
The cutback asphalt MC250 applying to waterproofing of surfaces plug capillary voids, coat and bond loose mineral particles.
Current common uses are in penetrating prime coats and in producing patching or stockpile mixtures. Cutback asphalt used in mixing with aggregate will usually contain an adhesion agent to assist in the coating of the aggregate surface.
Specification of cutback bitumen MC-250:
cutback bitumen MC-250
| Property / Unit | Specification | Test method |
|---|---|---|
| Kinematic viscosity at 60°c ,cST | 250~500 | ASTM D2170 |
| Flash point(tag open cup), °c | 66 | ASTM D3143 |
| Distillate, percent by Volume of total 360°C | ||
| To 190°C | 10 max | ASTM D402 |
| To 225°C | 15~55 | ASTM D402 |
| To 260°C | 60~87 | ASTM D402 |
| To 316°C | 67 min | ASTM D402 |
| Test on Residue from distillation test | ||
| Viscosity at 140°f(60°c) | 30~120 | ASTM D2170 |
| Penetration 77°f(25°c) 100g,5s mm | 120~250 | ASTM D5 |
| Ductility 77°f(25°c) 5cm/min cm | 100 min | ASTM D113 |
| Solubility in trichloroethylene % | 99 min | ASTM D2042 |
| Water, percent volume | 0.2 max | ASTM D95 |
