FIELD EVALUATION OF FOAMED ASPHALT BINDER IN AN AGGREGATE BITUMINOUS BASE COURSE - FINAL REPORT

The objective of this project is to evaluate the performance of a foamed asphalt binder, AC-10, in an aggregate bituminous base course. Aggregate bituminous base courses in Pennsylvania are either cold mixed using emulsified asphalts or hot mixed bituminous concrete. The mix used on this project was made by foaming an AC-10 asphalt cement with a blend of crusher run aggregate and screenings. This process uses less energy by using an asphalt cement aggregate that requires less processing and no heating and drying of the aggregate before mixing. A series of tests was conducted in an attempt to determine test conditions and values for foamed mixes. Six-inches of foamed aggregate bituminous base course was placed in two lifts at a rate of 1800 tons/day. A final two-inches of Penna. ID-3 hot mixed bituminous concrete was placed as a wearing course. Recommendations were made to place additional test sites to determine optimum pavement design characteristics.

• 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:
  • Knight, N
• Publication Date: 1985-6

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 36 p.

Subject/Index Terms

• TRT Terms: Asphalt cement; Binders; Bituminous aggregates; Foamed asphalt; Performance; Performance evaluations
• Uncontrolled Terms: Field performance
• Subject Areas: Geotechnology; Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00453746
• Record Type: Publication
• Report/Paper Numbers: FHWA-PA-84-034, Res Project 81-14
• Contract Numbers: 81-14
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jul 31 1987 12:00AM