1. Paving Asphalts (PA) Liquid / Cutback Asphalts Emulsified Asphalts
Viscosity Grades
- Performance Grades for Hot Mix (HMA)
- Penetration Grades for Emulsions Residues
- Paving Grades are moved by high temperatures (300 F+)
Liquid / Cutback Asphalts
Blender plus Solvent
Rapid Cure (RC) = PA + Gasoline or Naptha
Medium Cure (MC) = PA + Kerosene
Slow Cure (SC) = PA + #2 Diesel
Each of the above cutback are available
in 4 viscosity ranges:
70, 250, 800, & 3,000 centistokes
Emulsified Asphalts
Colloid Mill plus water and Emulsifier (soap)
Anionic Emulsions
- negative charge
Rapid Set (RS)
HFRS (High Float RS)
Medium Set (MS)
HFMS (High Float MS)
Slow Set (SS)
Quick Set (QS)
Cationic Emulsions (C)
+ positive charge
Rapid Set (CRS)
Medium Set (CMS)
Slow Set (CSS)
Quick Set (CQS)
Label Codes: 1 = Lower Viscosity; 2 = Higher Viscosity;
AC = Asphalt Cement; C = Cationic; E = Emulsion; H = Hard Base;
HF = High Float; LT = Low Temperature; MS= Medium Set;
P or PM = Polymer Modified; QS = Quick Set; R = Rubber;
RS = Rapid Set; SS = Slow Set

2. Positive Mixed Negative
Classification of Aggregates
Content of Silica SiO2 % 10 20 30 40 50 60 70 80 90
100
Siliceous Limestone
Basalts
Porphyries
Positive
Mixed
Negative
Sandstone
Limestone (content of CaO)
Diorites
Granites
Ophites
Approximate Effective Range of
Cationic Emulsions (positive +)
Approximate Effective Range of
Anionic Emulsions (negative -) 10 20 30 40 50 60 70 80 90
100
Content of Alkaline or Alkaline Earth Oxide %