Description of Cutback Bitumen SC-800
Cutback Bitumen SC-800 is a slow curing cutback bitumen, made by dissolving penetration grade bitumen in a petroleum solvent, typically kerosene or diesel. This reduces the bitumen’s viscosity, making it easier to handle and apply.
Cutback Bitumen SC800 has a kinematic viscosity ranging from 800 to 1600 centistokes (CST) at 60 °C and contains about 50% bitumen by volume. Cutback asphalt is an asphalt cement with a solvent or distillate, such as gasoline, diesel fuel, kerosene, or naphtha, added to make the asphalt liquid at ambient temperatures and improve its ability to coat aggregates. SC liquid asphalt can contain between 12 and 40% distillate.
The high demand for distillates in energy applications and increasing air quality regulations have led to a decline in the use of cutback asphalt. SC liquid asphalt can be obtained by fluxing an asphalt cement with a less volatile distillate, such as gas oil. SC cutback materials, also known as “road oils,” are similar to residual refinery products used as heavy fuel oils.
Cutback Bitumen SC-800 Application
Cutback bitumen SC-800 is widely used in road construction for surface treatments such as prime coats, tack coats, and in those regions where heating of Asphalt is difficult due to cold, wet, or mild climates. Due to its slow-curing nature, it is ideal for those usages where longer working time is required for penetration into granular bases or for surface binding.
The bitumen is usually applied as a liquid, penetrates the surface material, and then evaporates the solvent to leave a tough, adherent bituminous layer.
This helps in binding loose aggregates and preparing the surface for subsequent paving or sealing layers, ensuring stability and water and traffic stress resistance.
Packing
Packing of this product is in new thick steel drum on pallet to prevent any leak inside of container also bulk in bitutainer and tanker.
Specification
| Properties | Min | Max | Test Method |
|---|---|---|---|
| Kinematic viscosity at 60°C [140°F], mm2/s | 800 | 1600 | ASTM D2170 |
| Flash Point (Cleveland open cup), °C | 70 | – | ASTM D92 |
| Distillate test: | |||
| Total distillate to 360°C (680°F), volume % | – | 15 | ASTM D402 |
| Solubility, % | 95 | – | ASTM D2042 |
| Kinematic viscosity on distillation residue at 60°C (140°F), mm2/s | 1000 | 16000 | ASTM D2170 |
| Asphalt residue: | |||
| Residue of 100 penetration, % | 60 | – | ASTM D243 |
| Ductility of 100 penetration residue at 25°C (77°F), cm | 50 | – | ASTM D113 |
| Water, % | – | 0.5 | ASTM D95 |
