EMULSIFIED ASPHALT COLD MIXES SURFACES

CONCERN OVER THE CONTRIBUTION OF HOT-MIX PLANTS TO AIR POLLUTION HAS PROMPTED THE CALIFORNIA DIVISION OF HIGHWAYS TO STUDY, BY FIELD TRIAL AND EVALUATION, THE ENVIRONMENTAL ASPECTS AND QUALITY OF COLD-MIXED ASPHALT SURFACING. A ONE- MILE SECTION OF ONE-INCH COLD-MIXED OVERLAY WAS INSTALLED ON HIGHWAY 30 OVER AN EXISTING AC PAVEMENT. THE TWO-LANE HIGHWAY HAS AN ADT OF 4000, OF WHICH 17% ARE TRUCKS. SPEEDS AVERAGE 50--65 MPH. RAINFALL IS 15 INCHES ANNUALLY AND AMBIENT TEMPERATURES RANGE FROM 25 TO 115 F. TWO EMULSIONS WERE EMPLOYED. BOTH OPEN- AND DENSE-GRADED MIXES WERE USED, THE FORMER CHOKED WITH SAND. AFTER 90 DAYS THE RIDING QUALITIES OF BOTH MIXES WERE GOOD, BUT SOME RAVELLING WAS APPARENT. THE DENSE-GRADED MIX, UNLESS FOG-SEALED, RAVELS BADLY. THE EXPERIMENT WAS SUCCESSFUL ENOUGH TO WARRANT ADDITIONAL TRIALS.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1606878
• Supplemental Notes:
  • VOL 103 NO 7 PP 82, 4
• Authors:
  • Conner, S H
• Publication Date: 1972-7

Media Info

• Serial:
  • Public Works
  • Volume: 103
  • Issue Number: 7
  • Publisher: Hanley Wood
  • ISSN: 0033-3840
  • Serial URL: http://www.pwmag.com

Subject/Index Terms

• TRT Terms: Bituminous mixtures; Cold mix paving mixtures; Dense graded aggregates; Open graded aggregates; Overlays (Pavements); Riding qualities
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00211765
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 30 1973 12:00AM