SC-30 Cutback Bitumen — Slow-Curing Binder for Prime Coats & Soil Stabilization

SC-30 is a slow-curing cutback bitumen with extended working time, formulated for deep penetration into granular and absorbent surfaces. Ideal for prime coats, soil stabilization, and dust control on low-traffic roads.

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What Is Cutback SC-30 Bitumen?

Cutback SC-30 is a slow-curing bitumen made by blending penetration-grade bitumen with low-volatility solvents, giving it the longest curing time among the cutback series. This extended working window allows the binder to penetrate deeply into granular and absorbent surfaces before it fully sets.

Its slow evaporation rate keeps the binder workable for longer, letting it soak thoroughly into base layers and bond strongly with the underlying material. This makes SC-30 particularly effective where maximum penetration and prolonged workability matter more than rapid strength gain.

SC-30 is typically supplied to ASTM standards, with a negative spot test confirming solvent compatibility. It’s commonly used for prime coats on granular bases, soil stabilization, dust control, and preparation work on low-traffic roads.

SC 30 Specification

SC 30 CutBack Bitumen Specifications

Essential Details

Test Method

Unit

Min.

Max.

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

SC 30 MSDS

pdf

SC 30 Safety Data Sheet

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    Our faqs

    Frequently Asked Questions.

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    SC-30 is a slow-curing cutback bitumen produced by blending penetration-grade bitumen with low-volatility solvents for extended curing time.

    2. Where is SC-30 commonly used?

    SC-30 is commonly used for:

    • Prime coats on granular bases
    • Soil stabilization
    • Dust control
    • Low-traffic road preparation

    SC-30 cures slowly, allowing deep penetration into base layers before solvent evaporation.

    • Excellent penetration and workability
    • Long working time
    • Strong bonding with base materials
    • Suitable for ambient temperature application

    SC-30 should be stored in sealed containers, kept away from heat and ignition sources, and handled with proper ventilation due to solvent content.