Section 823 Cutback Asphalt Emulsion

Section 823—Cutback Asphalt Emulsion823.1 General DescriptionThis section includes the requirements for cutback asphalt emulsions.823.1.01 Related ReferencesA. Standard SpecificationsSection 820–Asphalt CementB. Referenced DocumentsAASHTO:T 44T 49T 51T 55T 72T 111GDT 11823.2 Materials823.2.01 Cutback EmulsionA. RequirementsUse the various grades of cutback asphalt emulsions that meet the requirements shown in Table 1.Table 1—Properties of Cutback Asphalt EmulsionsGradeRequirements CBAE-2 CBAE-3Min. Max. Min. Max.Viscosity, Furol at 140° F (60 o C), in seconds 100 350 400 700Distillation:Residue (asphalt cement) percent by weight 67 72Water content percent by weight 4 12 4 12Naphtha content (by difference) percent by weight 12 25 10 20Tests on residue from distillation:Penetration at 77 °F (25 o C), 100 g, 5 seconds 60 150 60 150Ductility at 77° F (25 o C), 5 cm per min., (cm) 100 100Solubility in trichloroethylene, percent by weight 99 99Ash, percent by weight 1.0 1.0Page 1

Section 823—Cutback Asphalt EmulsionB. Fabrication1. Prepare the cutback asphalt emulsions by compounding a suitable volatile naphtha, emulsifying agent, and waterwith asphalt cement.2. Mechanically invert 100 percent of the cutback emulsions before shipping.C. AcceptanceTest as follows:TestMethodViscosity AASHTO T 72Distillation GDT 11Water AASHTO T 55Penetration AASHTO T 49Ductility AASHTO T 51Solubility AASHTO T 44Ash AASHTO T 111D. Materials WarrantyGeneral Provisions 101 through 150.Page 2