Bitumen MC 250
MC-250 bitumen is one type of soluble bitumen that is produced using petroleum solvents. MC-250 is known as a “Medium-Cutback” bitumen, where the pure bitumen has been diluted using a medium petroleum solvent (such as kerosene or naphtha) to make it more suitable for various ambient temperature applications. .
Features and applications
Characteristics of bitumen MC 250
1. Moderate viscosity: MC-250 has a moderate viscosity that makes it suitable for various applications, especially in various temperature conditions. The viscosity of this type of bitumen is higher compared to MC-30 and MC-70 bitumen, but it is still in the category of medium viscosity bitumen.
2. Average setting speed: MC-250 bitumen has an average setting time due to the use of petroleum solvents with an average evaporation rate. This feature allows the bitumen to spread well over the surface before it solidifies.
3. Use at ambient temperature: MC-250 bitumen can be used at ambient temperature without overheating, which saves energy and facilitates use.
4. Good adhesion: This type of bitumen has good adhesion to minerals and road construction materials, which is used for various applications in the road construction industry.
MC 250 bitumen applications
1. Prime Coat: One of the main applications of MC-250 bitumen is in the Prime Coat process, which is used to prepare and strengthen the subgrade surface before asphalting. This type of bitumen penetrates the underlying layers and creates a better bond between the underlying layers and the asphalt surface.
2. Road maintenance and repair: MC-250 bitumen is used for road repair and maintenance due to its good adhesion and viscosity properties. It is used to fill cracks and potholes on the road surface.
3. Making cold asphalt: MC-250 can be used in cold asphalt mixes prepared at ambient temperature. This type of asphalt is used for immediate and temporary road repairs.
4. Asphalting in cold areas: due to its ability to be used at low temperatures, MC-250 is suitable for asphalting and surface preparation in cold areas where it is not possible to use hot bitumen.
5. Protective and waterproof layer: MC-250 is used as a protective and waterproof layer in some underground structures and bridges to prevent water and moisture penetration.
This type of bitumen is widely used in various road construction and construction projects due to its ease of use and balanced properties between other soluble bitumen, especially in areas where there is a need for quick spreading of bitumen and medium setting.
MC 250 bitumen specifications table
| Analysis | Test method | Unit | Range | Result |
|---|---|---|---|---|
| Density at 15 °C | ASTM D 1298 | kg / m3 | report | 966.0 |
| Kinematic viscosity at 60°C | ASTM D 2170 | cSt. | 250 – 500 | 366 |
| Flash Point (Tag open – cup ) | ASTM D 3143 | °C | Min. 66 | 78.9 |
| Distillation test | ASTM D 402 | Vol% | ||
| Distillate vol % of total | ASTM D 402 | |||
| Distillate to 360 °C | ASTM D 402 | Vol% | report | |
| Distillate to 225 °C | ASTM D 402 | Vol% | Max. 10 | 0.0 |
| Distillate to 260 °C | ASTM D 402 | Vol% | 15 – 55 | 15.0 |
| Distillate to 316 °C | ASTM D 402 | Vol% | 60 -87 | 76.4 |
| Residue from distillation to 360 °C | Vol% | Min. 67 | 82.6 | |
| Test on residue from distillation : | ||||
| Ductility at 25 °C | ASTM D 113 | cm | Min. 100 | 105.0 |
| Penetration at 25 °C | ASTM D 5 | mm/10 | 120 – 250 | 246.0 |
| Solubility in trichloroethylene | ASTM D 2042 | Wt% | Min. 99.0 | 99.8 |
| Water content | ASTM D 95 | Vol% | Max. 0.2 | 0.01 |