823.1 General Description
This section includes the requirements for cutback asphalt emulsions.
823.1.01 Related References
A. Standard Specifications Section 820–Asphalt Cement B. Referenced Documents AASHTO: T 44 T 49 T 51 T 55 T 72 T 111 GDT 11
823.2 Materials
823.2.01 Cutback Emulsion
A. Requirements Use the various grades of cutback asphalt emulsions that meet the requirements shown in Table 1. TABLE 1—PROPERTIES OF CUTBACK ASPHALT EMULSIONS Grade Requirements CBAE-2 CBAE-3 Min. Max. Min. Max. Viscosity, Furol at 140 °F (60 °C), in seconds 100 350 400 700 Distillation: Residue (asphalt cement) percent by weight 67 72 Water content percent by weight 4 12 4 12 Naphtha content (by difference) percent by weight 12 25 10 20 Tests on residue from distillation: Penetration at 77 °F (25 oC), 100 g, 5 seconds 60 150 60 150 Ductility at 77° F (25 oC), 5 cm per min., (cm) 100 100 Grade Requirements CBAE-2 CBAE-3 Min. Max. Min. Max. Solubility in trichloroethylene, percent by weight 99 99 Ash, percent by weight 1.0 1.0 B. Fabrication Prepare the cutback asphalt emulsions by compounding a suitable volatile naphtha, emulsifying agent, and water with asphalt cement. Mechanically invert 100 percent of the cutback emulsions before shipping. C. Acceptance Test as follows: Test Method Viscosity AASHTO T 72 Distillation GDT 11 Water AASHTO T 55 Penetration AASHTO T 49 Ductility AASHTO T 51 Solubility AASHTO T 44 Ash AASHTO T 111 D. Materials Warranty General Provisions 101 through 150.
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