Cutback RC 250 — High-Viscosity Rapid-Curing Bitumen for Road Construction

Engineered with higher viscosity for strong adhesion, RC-250 delivers durable surface treatments built for demanding road construction and maintenance works.

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What Is Cutback RC-250 Bitumen?

Cutback RC-250 is a rapid-curing bitumen made by blending penetration-grade bitumen with a volatile petroleum solvent, giving it a notably higher viscosity than the RC-30 and RC-70 grades. The slower solvent evaporation improves binder retention and film thickness while still curing fast enough for road work.

A kinematic viscosity of 250–500 mm²/s at 60°C, paired with a flash point above 27°C, allows RC-250 to be handled and sprayed safely while forming a thicker, more durable binder film on the aggregate. Once cured, it delivers stronger adhesion than the lighter RC grades.

RC-250 is typically supplied to ASTM D2170 standards, with residue penetration between 80–120 and a negative spot test confirming solvent compatibility. This makes it well suited to surface dressing, tack coats, and road maintenance or rehabilitation work on medium to high-traffic pavements.

Black Rock RC 250 CutBack Bitumen

Essential Details

Description

  • Type
  • Cut Back Bitumen
  • Feed Stock
  • Penetration Bitumen and Petroleum Solvent
  • HS Code
  • 27150090
  • Spot Test
  • Negative
  • Inspection
  • Included
  • Delivery Term
  • FOB-CFR-CIF
  • Production and Loading Period
  • Approximately 1 Month
  • Payment Term
  • TT Method FOB Delivery: 30% advance and balance against customs documents CFR/CIF Delivery: 30% advance and balance against B/L daft
  • Marking
  • Marking can be customized based on customer request
  • Supply Capacity
  • 1000 MT/Month
  • Packing
  • -New Steel Drum -Jumbo Bag

RC 250 Specification

RC 250 CutBack Bitumen Specifications

Essential Details

Test Method

Unit

Min.

Max.

  • Kinematic Viscosity at 60 °C (140 °F)
  • ASTM D2170
  • mm²/s
  • 250
  • 500
  • Flash Point (Tag Open-Cup)
  • ASTM D3143
  • °C
  • 27
  • -
  • Distillation – Total Distillate to 190 °C (374 °F)
  • ASTM D402
  • °C
  • -
  • -
  • Distillation – Total Distillate to 260 °C (500 °F)
  • ASTM D402
  • vol.%
  • -
  • 60
  • Distillation – Total Distillate to 316 °C (600 °F)
  • ASTM D402
  • vol.%
  • 60
  • -
  • Residue from Distillation to 360 °C (680 °F)
  • ASTM D402
  • vol.%
  • 85
  • -
  • Penetration of Residue at 25 °C
  • ASTM D402
  • 0.1 mm
  • 80
  • 120
  • Ductility of Residue at 25 °C (77 °F)
  • ASTM D5
  • cm
  • 100
  • –
  • Spot Test
  • ASHTO T102
  • Negative

RC-250 MSDS

pdf

RC-250 Safety Data Sheet

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Our Packaging

We deliver bitumen in versatile, secure options: economical Jumbo Bags, robust steel Drums, or high-volume Bulk Containers (Bitutainers/Bituboxes).

Terms of Payment

Payment Terms for Smooth Transactions

TT Method

The buyer pays 30% advance, with the balance against B/L draft (CFR) or customs docs (FOB).

LC at Sight

100% irrevocable, non-transferable, confirmed LC at sight, subject to bank approval by Black Rock Bitumen.

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    Our faqs

    Frequently Asked Questions.

    Our RC-250 bitumen is a rapid-curing cutback formulated to provide enhanced binder strength and controlled curing, making it suitable for spray sealing, surface dressing, and heavy-duty road applications.

    RC-250 is a rapid-curing cutback bitumen produced by blending penetration-grade bitumen with volatile solvents to achieve higher viscosity and fast curing for demanding road applications.

    What is RC-250 used for?

    RC-250 is commonly used for surface dressing and spray seals, tack coats, road maintenance and rehabilitation works, and medium to high-traffic pavements.

    Per ASTM D2170, RC-250 has a kinematic viscosity at 60°C of 250–500 mm²/s, significantly higher than RC-70, giving it a thicker binder film for stronger bonding.

    RC-250 has a higher viscosity and slower solvent evaporation than RC-70, providing better binder retention and stronger aggregate bonding for heavier-duty applications.

     RC-250 has a minimum flash point of 27°C (Tag Open-Cup, ASTM D3143), a key safety parameter for transport, storage, and application handling.

    The penetration of RC-250's residue at 25°C ranges from 80 to 120 (in 0.1 mm units), tested per ASTM D402, indicating a durable binder suited to demanding road conditions.

    Yes, RC-250 can be applied at ambient temperatures, offering strong adhesion and improved film thickness without requiring extensive heating.

     Black Rock Bitumen supplies RC-250 in new steel drums or jumbo bags, with a production capacity of approximately 1,000 MT per month and FOB, CFR, or CIF delivery terms.