Cutback Bitumen SC-250 | Pars Bitumen

Introduction

Cutback Bitumen SC-250 is a slow-curing (SC) asphalt cutback formulated by blending penetration-grade bitumen with a heavy petroleum solvent. The slow solvent evaporation gives SC-250 a long working time and deep penetration into aggregates and granular bases—ideal for priming, surface treatments, and cold weather maintenance.

 

 

Cutback Bitumen SC-250: Properties, Applications & Supply | Pars Bitumen

Cutback Bitumen SC-250 is a medium-curing cutback bitumen grade manufactured by Pars Bitumen, a leading supplier of high-quality road construction materials. This product is commonly used in paving and maintenance applications due to its optimal viscosity and excellent penetration capability on dense aggregates.

SC-250 consists of bitumen blended with volatile petroleum solvents, allowing easier handling and faster penetration into road bases during prime coating and surface treatments.

Technical Specifications (Typical Range):

Properties	Min	Max	Test Method
Kinematic viscosity at 60°C [140°F], mm2/s	250	500	ASTM D2170
Flash Point (Cleveland open cup), °C [°F]	79[175]	–	ASTM D92
Distillation test:
Total distillate to 360°C [680°F], volume %	4	20	ASTM D402
Solubility in trichloroethylene, %,	99.0	–	ASTM D2042
Kinematic viscosity on distillation residue at 60°C [140°F], mm2/s	800	10,000	ASTM D2170
Asphalt residue:
Residue of 100 penetration, %	60	–	ASTM D243
Ductility of 100 penetration residue at 25°C [77°F], cm	100	–	ASTM D113
Water, %	–	0.5	ASTM D95

✅ Applications of Cutback Bitumen SC-250

SC-250 is widely used in:

Prime coat for road base preparation

Surface dressing on low-traffic roads

Patching and repairing aged asphalt layers

Penetration macadam construction

Dust control in unpaved surfaces

Cold weather paving where hot bitumen is not feasible

✅ Advantages of SC-250 by Pars Bitumen

Choosing Pars Bitumen guarantees:

Consistent product quality

Competitive prices for global markets

On-time delivery in bulk or drum packaging

Technical support for project requirements

Solutions tailored to road construction contractors

✅ Packaging Options

Pars Bitumen supplies SC-250 in:

New steel drums

Bulk tankers

Custom packaging upon request

We ensure safe loading, export-ready packing, and compliance with international transport regulations.

✅ Safety & Handling Tips

Store away from ignition sources

Use proper ventilation during application

Wear PPE: gloves, goggles, masks

Follow local environmental regulations during usage

Standards & Compliance

Pars Bitumen SC-250 is produced in line with the intent of widely used specifications such as ASTM D2028 (Slow-Curing Cutback Asphalt) and relevant national road authorities’ requirements. Actual purchasing specs can be customized to your project or agency standard. A Certificate of Analysis (CoA) is provided for every batch.

Handling, Safety & Environment

Flammable liquid: Observe hot-work and ignition-source controls. Use appropriate PPE and grounded transfer systems.

Ventilation: Apply in well-ventilated areas; avoid inhalation of vapors.

Spill response: Contain with inert absorbent; prevent entry to drains and waterways.

Cure & traffic: Allow sufficient curing before opening to traffic to avoid aggregate loss or tracking.

Safety Data Sheet (SDS) for Pars Bitumen SC-250 available on request.

Recommended Applications

Prime coat (base priming): SC-250 is a go-to grade for priming granular bases prior to laying hot mix or surface dressings.

Surface treatments & chip seals: As a binder where extended curing helps aggregate embedment.

Patchwork & maintenance: Cold-applied mixes and repairs when heating is impractical.

Dust control on unsealed roads: Temporary stabilization of shoulders and haul roads.

Typical Application Rates (Guide)

Prime coat: 0.7–1.6 L/m² depending on base absorption and moisture.

Surface treatment: 1.2–2.0 L/m² depending on aggregate size and traffic.

Always verify with job-site trials, substrate absorption, and local specs.

Packaging, Storage & Logistics

Standard Packs (Pars Bitumen):

Metal drums (new or reconditioned): 185–200 kg net

IBCs / tote tanks: 1,000 L nominal

Bulk road tankers / ISO tanks for large projects

Storage & Shelf Life

Store under cover at 5–40 °C away from direct sunlight and ignition sources.

Keep containers tightly closed. Under proper storage, typical shelf life is 6–12 months.

Rotate stock FIFO; mix gently before use to ensure homogeneity.

Labeling

Each unit labeled with product name, batch/lot number, net weight/volume, and HSE markings. Custom labels and co-branding available.

Quality Assurance — Pars Bitumen

ISO-aligned QC with batch-wise testing and retained samples.

Custom formulations to match agency specs and climate bands.

Technical support for prime coat design, cutback selection, and spray-rate calibration.

Global shipping with export documentation and HS code support.

How to Use SC-250 Effectively (Contractor Tips)

1. Substrate readiness: Base should be compacted, firm, and surface-dry with no standing water.

2. Application temperature: Follow spec; typically ambient >10 °C and rising, with low wind.

3. Spray calibration: Verify distributor nozzles, bar height, and pump pressure for target L/m².

4. Absorption test: Trial patch to confirm rate; adjust for highly absorptive bases.

5. Curing: Permit adequate cure before overlay or trafficking; visual check for solvent evaporation and tack.

Frequently Asked Questions

Q: What’s the difference between SC-70, SC-250, SC-800, and SC-3000?

A: Primarily viscosity class and solvent content. Higher numbers are thicker and cure more slowly. SC-250 is a versatile mid-range grade for priming and surface treatments.

Q: Can Pars Bitumen customize SC-250?

A: Yes—residue penetration, flash point, and solvent package can be tuned to your climate and spec.

Q: Do you provide third-party inspection?

A: On request (SGS, Geochem, or client-nominated).

✅ Conclusion

Cutback Bitumen SC-250 remains one of the most reliable road construction binders, especially for prime coats and surface treatments. Pars Bitumen provides premium SC-250 with proven performance, clean handling, and global supply capabilities. Whether you are building new infrastructure or maintaining existing road networks, our SC-250 offers strength, durability, and long-term protection.

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Cutback Bitumen SC-250 (Slow-Curing) — Pars Bitumen

 

Contact Pars Bitumen:

🌐 Website: www.parsbitumen.com

📧 Email: sales@parsbitumen.com

📞 WhatsApp: +98 912 387 9127