EVALUATION OF ASPHALT CONCRETE PRODUCED BY THE DRYER-DRUM MIXING PROCESS

The quality of asphalt concrete produced by a dryer-drum mixing plant was investigated. A dryer-drum mixing plant was used on two state projects in northern California during 1973. The A.C. mixture did not appear to be harmed by the simultaneous drying of the aggregate and mixing of the aggregate and asphalt. However, indications exist that unconsumed burner fuel may have contaminated the asphalt and softened it. This dryer-drum mixing equipment produced an A.C. mixture of a uniformity that matches the mean capability of conventional plants. Both the asphalt content and the aggregate gradation remained within reasonable limits of the sought values.

• Corporate Authors:

  California Division of Highways

  1120 N Street
  Sacramento, CA  United States  95814

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Apostolos, J A
  • Mann, G W
• Publication Date: 1974-11

Media Info

• Pagination: 60 p.

Subject/Index Terms

• TRT Terms: Aggregate gradation; Aggregates; Asphalt cement; Asphalt concrete; Asphalt content; Asphalt mixtures; Contaminants; Dryer drum process; Drying; Heating (Structures); Mixing; Pavements; Process control
• Uncontrolled Terms: Contamination
• Geographic Terms: California
• Old TRIS Terms: Asphaltic cements
• Subject Areas: Construction; Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00091359
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CA-DOT-TL3125-1-7416Intrm Rpt.
• Contract Numbers: F-8-19
• Files: NTIS, TRIS, USDOT
• Created Date: Jul 15 1975 12:00AM