Cutback Bitumen MC-250 Description
Cutback Bitumen MC-250 use is restricted to patching materials for use in cold weather cutback MC-250 is medium curing (MC) cut-back asphalt consisting of penetration grade asphalt cement and diluent or cutter of medium volatility. The diluent temporarily reduces the viscosity of the asphalt cement for ease of handling and application. Cutback MC-250 use in the road maintenance industry where it is used as a prime coat of the base course prior to placing of the bituminous surface course. Its purpose is to bind the granular material of the base course to the asphalt layer. Usual application is by spray using a distributor.
Cutback bitumen MC-250 is dissolved of bitumen in solvents of kerosene. In many countries, kerosene and other volatile petroleum-derived products are added as a cutter or cutback agent to bitumen to reduce (or cutback) the viscosity of the bitumen. The mixture obtained may be called cutback bitumen.
Our MC-250 Cutback Bitumen complies with cutback petroleum asphalts of the Medium-Curing type for use in the construction and treatment of pavements as per ASTM D2028-97 reapproved in 2004. Cutback Grade Bitumen is normally used in spraying and in some mixing applications. Cutback Bitumen is penetration grade bitumen blended with a solvent such as kerosene, white spirit, gasoline, and naphtha, controlling the curing time. Cut back petroleum asphalts of the rapid curing type supplied by ZUMRUT Company are petroleum grade bitumen manufactured from the fractional / vacuum distillation of crude oil blended with a solvent. Bitumen supplied by ZUMRUT Company is produced from the vacuum residue(short residue)feedstock. Penetration Grade bitumens are specified by the penetration and softening point test. Designation is by penetration range only. The penetration grade bitumens have a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. This unique temperature/ viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability, and application temperatures of bitumen. The cutback bitumen (Asphalts) supplied by ZUMRUT are blended from petroleum grade bitumen as stated herein
Cutback Bitumen MC-250 Applications
Cutback bitumen MC-250, similar to MC-70 but with a higher viscosity, is commonly used in various applications in road construction and maintenance:
- Prime Coating: MC-250 can be applied as a prime coat to prepare the base surface before laying asphalt, enhancing the bond between the base and subsequent asphalt layers.
- Tack Coat: It serves as a tack coat to promote adhesion between asphalt layers during pavement construction or rehabilitation, similar to MC-70 but with a higher viscosity for specific requirements.
- Dust Control: MC-250 is effective for dust suppression on unpaved roads and surfaces, reducing airborne dust particles and stabilizing the surface.
- Patch Repair: It is used for patching and repairing damaged areas on asphalt pavements, such as potholes and cracks, providing a durable and long-lasting repair solution.
- Seal Coating : MC-250 can be employed in seal coating applications to protect asphalt surfaces from moisture, oxidation, and wear, extending the pavement’s lifespan and improving its appearance.
- Grout: In some cases, MC-250 is utilized as a grout for filling voids and cracks in concrete structures, providing a waterproof seal and enhancing structural integrity.
Properties of Cutback Bitumen MC250
Cutback bitumen MC-250 possesses several properties that make it suitable for various applications in road construction and maintenance:
- Higher Viscosity: Compared to MC-70, MC-250 has a higher viscosity, typically around 250 centistokes at 60°C. This higher viscosity affects its flow characteristics and application methods.
- Medium Curing Rate: Similar to MC-70, MC-250 has a medium curing rate, allowing it to penetrate and bond effectively with the underlying surface while providing sufficient time for application.
- Temperature Sensitivity: MC-250’s viscosity decreases as temperature rises, making it easier to handle and apply in warmer climates or during hot weather conditions.
- Improved Adhesion: With its higher viscosity, MC-250 offers improved adhesion properties, promoting stronger bonding between different layers of asphalt and enhancing the overall structural integrity of pavements.
- Water Resistance: Once cured, MC-250 provides effective water resistance, protecting the underlying surface from moisture infiltration and damage.
- Durability: MC-250 contributes to the durability of asphalt pavements by providing a strong, cohesive bond between asphalt layers and enhancing resistance to environmental stresses, such as traffic loads and temperature fluctuations.
Understanding these properties is essential for selecting the appropriate application method and ensuring the desired performance of cutback bitumen MC-250 in road construction projects. Additionally, adherence to safety regulations and guidelines for handling and application is crucial to ensure the safe and effective use of MC-250.
Packing of Cutback Asphalt MC250
- Bulk as IBC Tank, Flexi Tank
- Reconditioned steel drums 203 lit., Net Weight: 185 ± 5 Kg
- New steel drums 203 lit., Net Weight: 185 ± 5 Kg
Guaranty and Safety of Bitumen MC-250
The guarantee and safety of bitumen MC-250 depend on several key factors:
- Quality Assurance: Ensuring that the MC-250 bitumen meets relevant quality standards and specifications set by regulatory authorities or industry organizations is essential for guaranteeing its performance and properties.
- Manufacturer Reputation: Choosing a reputable manufacturer with a proven track record of producing high-quality bitumen products can enhance the guarantee of the MC-250’s performance and consistency.
- Compliance with Regulations: Adhering to safety regulations and guidelines for handling, storage, transportation, and application of bitumen MC-250 is crucial to minimize risks to workers, the environment, and the public.
- Proper Application: Following recommended application procedures and techniques, including surface preparation, temperature considerations, and application rates, is important to ensure the effective and safe use of bitumen MC-250.
- Safety Precautions: Implementing appropriate safety measures, such as providing personal protective equipment (PPE) for workers, controlling exposure to fumes, and managing fire hazards, is essential to mitigate risks associated with handling and applying bitumen MC-250.
- Environmental Impact: Minimizing environmental impact through responsible use, spill prevention, and proper disposal of waste materials is crucial for ensuring the safety and sustainability of bitumen MC-250 applications.
Specification of Bitumen MC250
| property | Specification Limit | Test method | |
| Min Max | |||
| Kinematic viscosity at 60°c, (cSt) | 250 | 500 | ASTM D2170 |
| Flashpoint(tag open cup), °c | 66 | — | ASTM D3143 |
| Distillation test | |||
| Distillate, volume percent of total Distillate to 680°f(360°c) | |||
| to 437°f(225°c) | — | 10 | ASTM D402 |
| To 500°f(260°c) | |||
| to 600°f(316°c) | 15 | 55 | |
| Residue from distillation to | 60 | 87 | |
| 680°f(360°c), percent volume by difference | 67 | — | |
| Test on Residue from distillation test | |||
| Penetration 77°f(25°c) dmm | 120 | 250 | ASTM D5 |
| Ductility 77°f(25°c) 5cm/min cm | 100 | — | ASTM D113 |
| Solubility in trichloroethylene % | 99 | — | ASTM D2042 |
| Water, percent volume | — | 0.2 | ASTM D95 |
