Asphalt Cutbacks

Overview

United Asphalt Company offers a variety of Asphalt Cutbacks. Asphalt Cutbacks are manufactured by blending liquefied asphalt and petroleum solvents. There are two major types of Cutback Asphalt based on the relative rate of evaporation of the solvent: Rapid-Curing (RC) & Medium-Curing (MC)

Rapid-Curing Cutback

A Rapid-Curing (RC) Cutback Asphalt is designed to react quickly primarily for spray applications, such as bond/tack coats, aggregate chips seals, sand seals and similar surface treatments.

Properties RC-30 RC-70 RC-250 RC-800 RC-3000
Designation Min Max Min Max Min Max Min Max Min Max
Kinematic Viscosity, 140°F, cSt 30 60 70 140 250 500 800 1600 3000 6000
Flash Point (TOC), °F 80+ 80+ 80+
Distillation Test: Distillate, volume percent of total distillate to 680°F
to 374°F 15 10
to 437°F 55 50 35 15
to 500°F 75 70 60 45 25
to 600°F 90 85 80 75 70
Residue from Distillation, 680°F, % volume by difference 50 55 65 75 80
Tests on residue from distillation:
Viscosity at 140°F, PA 600 2400 600 2400 600 2400 600 2400 600 2400
Ductility at 77°F, cm 100 100 100 100 100
Solubility in TCE, % 99.5 99.5 99.5 99.5 99.5
Water, % 0.2 0.2 0.2 0.2

Medium-Curing Cutback

A Medium-Curing (MC) Cutback Asphalt is designed for mixing with aggregates. Because these grades do not break immediately upon contact with aggregate, mixes using them can remain workable for extended periods of time and lend themselves to cold mix stockpiles.

Properties MC-30 MC-70 MC-250 MC-800 MC-3000
Designation Min Max Min Max Min Max Min Max Min Max
Kinematic Viscosity, 140°F, cSt 30 60 70 140 250 500 800 1600 3000 6000
Flash Point (TOC), °F 100 100 150 150 150
Distillate Test: Distillate, volume percent of total distillate to 680°F
to 437°F 25 20 10
to 500°F 40 70 20 60 15 55 35 15
to 600°F 75 93 65 90 60 87 45 80 15 75
Residue from Distillation, 680°F, % volume by difference 50 55 67 75 80
Tests on residue from distillation:
Viscosity at 140°F, PA 300 1200 300 1200 300 1200 300 1200 300 1200
Ductility at 77°F, cm 100 100 150 150 150
Solubility in TCE, % 99.0 99.0 99.0 99.0 99.0
Water, % 0.2 0.2 0.2 0.2 0.2

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