This paper reports the results of an investigation of the prospects of using sulfur-asphalt mixtures to stabilize typical Iraqi soils with locally available types of asphalts. The amount of sulfur-asphalt used was that equivalent to the amount of asphalt that produced the maximum compressive strength. The following results were observed: for the binders mixed at 130 degrees C, the addition of sulfur content, the strengths of the specimens prepared at higher mixing temperatures were higher; at a mixing temperature at 170 degrees C, where sulfur becomes very reactive the addition of it markedly increased the strength of soil-asphalt specimens; at a mixing temperature of 170 degrees C, the evolution of H2S and SO3 gases, due to the chemical processes of dehydrogenation and polymerization, could become a major problem in the field; the addition of sulfur slightly improved the temperature susceptibility of the mixture; and the addition of sulfur made the mixture easier to compact and to work with (i.e., the workability of the mixture was improved). The following conclusions may be drawn from the study; sulfur as an additive to cutback asphalt can be used to stabilize clayey sands and silty clays; when sulfur is added to asphalt cement, the mixing temperature influences the strength and temperature susceptibility of the mixtures produced; the addition of sulfur makes soil-asphalt mixtures easier to compact, and at a mixing temperature of 170 degrees C, the evolution of H2S and SO3 gases could become a major problem.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 106-108
  • Monograph Title: Mechanics of track support, piles and geotechnical data
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00315308
  • Record Type: Publication
  • ISBN: 0309029880
  • Files: TRIS, TRB
  • Created Date: Sep 16 1980 12:00AM