PROCESSING OF SAND-ASPHALT-SULPHER MIXES

This paper describes three sand-asphalt-sulphur mix processing sequences, and laboratory test specimen fabrication techniques to yield mix specimens corresponding to pavements constructed without roller compaction. Stability, tensile, flexural and fatigue test data indicate that the mixing process entailing addition of sulphur to sand-asphalt yields the best results. Despite the high air void contents, test data indicate the mixes to be relatively impervious. Mixes were prepared using a variety of aggregates ranging from fine, one-sized sand to coarse gravels, to explore the range of aggregate gradations potentially suitable for processing with sulphur. The stability of the mixes was found to increase with increasing sulphur content. Mixing plant modifications for automatic processing of sand-asphalt-sulphur mixes are outlined.

• Corporate Authors:

  University of Minnesota, Minneapolis

  155 Experimental Engineering Building
  Minneapolis, MN  United States  55455
• Authors:
  • Deme, I
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1974

Media Info

• Pagination: p. 465-490
• Serial:
  • Volume: 43

Subject/Index Terms

• TRT Terms: Aggregate gradation; Air voids; Asphalt; Bituminous mixtures; Fatigue tests; Flexural strength; Laboratory tests; Mechanical stability; Mixing; Permeability; Sand; Sulfur; Tensile strength
• Old TRIS Terms: Air voids content; Mixing procedures
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00098943
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 18 1975 12:00AM