ASPHALT EXTRACTION STUDY. TASK REPORT

This study compares the results of four asphalt extraction methods: the Quick (WSDOT 711), the Vacuum (AASHTO T-164 Method E-11), the Centrifuge (AASHTO T-164 Method A), and the Reflux (AASHTO T-164 Method D). The methods are compared on the basis of the amounts of trichloroethane used, the exposure to trichloroethane while testing, the time needed to do the testing, and the accuracy of the asphalt content and aggregate gradation determinations (with the Reflux method serving as the standard of comparison). It was concluded that the Quick method was still the best alternative to the Reflux method, based primarily on the speed of the test and its close agreement with the Reflux method on asphalt content and percent passing the #200 sieve. All methods provided exposure to trichloroethane vapor well below the recommended allowable levels.

• Record URL:
  • http://www.wsdot.wa.gov/research/reports/fullreports/165.1.pdf
• 
• Corporate Authors:

  Washington State Department of Transportation

  Materials Laboratory, 1655 South Second Avenue, P.O. Box 47365
  Tumwater, WA  United States  98512

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Schultz, R L
• Publication Date: 1988-11

Media Info

• Features: Figures;
• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Accuracy; Aggregate gradation; Alternatives analysis; Asphalt concrete; Asphalt content; Chemical analysis; Methodology; Resource extraction
• Uncontrolled Terms: Extraction (Chemistry)
• Old TRIS Terms: Trichloroethane
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00478208
• Record Type: Publication
• Report/Paper Numbers: WA-RD 165.1
• Contract Numbers: RE8232
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 31 1988 12:00AM