FIELD EVALUATION OF CHEMKRETE MODIFIED ASPHALT

The purpose of this project is to evaluate the service performance of ID-2 wearing course material ussing CAC (Chemkrete Asphalt Concentrate) modified AC-10 asphalt in comparison to unmodified AC-10 and AC-20 asphalts. The aging properties of the modified and unmodified asphalt binders and asphaltic mixes and their relation to pavement durability will be studied in detail. The use of the Chemkrete asphalt modifier (CAC) did not change the production or placing characteristics significantly. The continued use of the Chemkrete will depend on the long range performance of the Chemkrete modified asphalt. To date, no significant increase in the performance has been noted. The crack surveys would indicate that the CAC modified test sections have developed the most cracks. This would indicate that the CAC modified asphalt is more susceptible to low temperature cracking than either the AC-10 or AC-20 asphalts.

• Corporate Authors:

  Pennsylvania Department of Transportation

  Bureau of Bridge and Roadway Technology, T&S Bldg, Room 1009
  Harrisburg, PA  United States  17120

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Mellott, D B
• Publication Date: 1985-7

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 21 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt mixtures; Bituminous binders; Cracking; Durability; Field studies; Pavement performance; Wearing course (Pavements)
• Uncontrolled Terms: Modifiers
• Old TRIS Terms: Aging
• Subject Areas: Geotechnology; Highways; Materials; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00454366
• Record Type: Publication
• Report/Paper Numbers: FHWA-PA-85-012, Rept 81-15
• Contract Numbers: FR-111(25)
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jul 31 1986 12:00AM