CATIONIC MIXING-GRADE ASPHALT EMULSIONS

CATIONIC ASPHALT EMULSIONS WERE INTRODUCED IN THE UNITED STATES IN 1958 FOR SEAL COAT CONSTRUCTION. THEIR ADVANTAGES OVER ANIONIC EMULSIONS GAINED RAPID RECOGNITION IN THE HIGHWAY CONSTRUCTION INDUSTRY. RECENTLY, MIXING-GRADE CATIONIC ASPHALT EMULSIONS WERE MADE AVILABLE. THE UNIQUE PROPERTIES OF THESE NEW MATERIALS ARE EXPECTED TO INCREASE GREATLY THE VERSATILITY AND USEFULNESS OF MIXING-GRADE EMULSIONS IN HIGHWAY BASE AND WEARING COURSE CONSTRUCTION. THE FUNDAMENTAL PHYSICAL AND CHEMICAL PROPERTIES OF AGGREGATE-ASPHALT EMULSION SYSTEMS ARE DISCUSSED IN RELATION TO MIXING PERFORMANCE. THE ADVANTAGES IN ADHESION, DEHYDRATION RATE, AND DEVELOPMENT OF COHESION OBTAINED FROM CATIONIC EMULSIFIERS IN SUCH SYSTEMS ARE PRESENTED. DEFINITE FIELD PERFORMANCE ADVANTAGES OF CATIONIC EMULSIONS OVER ANIONIC EMULSIONS AND LIQUID ASPHALTS INCLUDE GREATER PERMISSIBLE VARIATIONS IN AGGREGATE MOISTURE CONTENT AND MIXING TEMPERATURE AND, THE ABILITY TO COMPACT WITHOUT EXCESSIVE REDUCTION OF MOISTURE CONTENT. THESE BENEFITS ARE OBTAINED IN ALL TYPES OF EMULSION CONSTRUCTION AND MAINTENANCE WORK. RECOMMENDED SPECIFICATIONS FOR TWO TYPES OF CATIONIC MIXING-GRADE EMULSIONS ARE PRESENTED FOR THE FIRST TIME. /HRB/

  • Supplemental Notes:
    • Vol 41, pp 195-210, 7 FIG, 3 TAB, 23 REF
  • Authors:
    • Borgfeldt, M J
    • Ferm, R L
    • Mcconnaughay, K E
  • Publication Date: 1962

Media Info

  • Monograph Title: Proceedings of the 41st Annual Meeting of the Highway Research Board, Washington, D.C., January 8-12, 1962
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00211648
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jan 24 1972 12:00AM