LABORATORY STUDY OF SLURRY SEAL COATS

Extensive programmed laboratory tests involving some 400 asphalt emulsion slurry seals (AESS) were conducted. Thirteen aggregates including nine Iowa sources, a quartzite, a synthetic aggregate (Haydite), a linestone stone from Nebraska, and a Chat aggregate from Kansas were tested in combination with four emulsions and two mineral fillers, resulting in a total of 40 material combinations. A number of meetings were held with the Iowa DOT engineers and 12 state highway departments that have had successful slurry seal experiences and records, and several slurry seal contractors and material and equipment suppliers were contacted. Asphalt emulsion slurry seal development, uses, characteristics, tests, and design methods were thoroughly reviewed in conjunction with Iowa's experiences through these meetings and discussions and through a literature search (covering some 140 articles and 12 state highway department specifications). It was found that, while asphalt emulsion slurry seals (when properly designed and constructed) can economically improve the quality and extend the life of existing pavement surface, experiences with them had been mixed due to the many material, slurry, and construction variables that affect their design, construction, and performance. The report discusses those variables identified during the course of the project and makes recommendations concerning design procedures, design criteria, specifications and the means of evaluating them.

  • Corporate Authors:

    Iowa State University, Ames

    Department of Civil, Construction and Environmental Engineering
    Town Engineering Building
    Ames, IA  USA  50011-3232
  • Authors:
    • Lee, D Y
  • Publication Date: 1977-5

Media Info

  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 87 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00163549
  • Record Type: Publication
  • Report/Paper Numbers: ERI Project 1263 Final Rpt.
  • Files: TRIS
  • Created Date: Oct 29 1977 12:00AM