STABILIZATION OF SANDS BY ASPHALT EMULSION

This laboratory study investigates whether sands and sand- clay aggregates are amenable to stabilization by asphalt emulsion. Marshall tests were used to evaluate the stability of emulsion-treated sand. Microscopic examination of the treated aggretgates revealed the nature and extent of bitumen coating and spreading characteristics of bitumen binder. The results show that well-graded sands with sufficient silt-clay material respond well to emulsions. Portland cement in trace quantities is required, however, to improve the water susceptibility of the mixtures. Because of its superior bonding to siliceous aggregate and its rapid setting tendencies, cationic emulsion is preferred in sand stabilization. Recommendations concerning mixing and compaction moisture are presented. This paper shows that either too little or too much mixing time will result in less than optimum coating. A hypothesis concerning the mechanism of emulsion bonding to aggregates--dry as well as prewet--is proposed.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/593/593-009.pdf
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=STABILIZATION+OF+SANDS+BY+ASPHALT+EMULSION&author=K.+George&publication_year=1976
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Soil-Bituminous Stabilization. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • George, K P
• Publication Date: 1976

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 51-56
• Monograph Title: Use of waste materials and soil stabilization
• Serial:
  • Transportation Research Record
  • Issue Number: 593
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt emulsions; Bituminous materials; Bituminous mixtures; Emulsions; Latex asphalt; Marshall test; Portland cement; Sand; Soil stabilization
• Old TRIS Terms: Asphalt latex emulsion; Cationic emulsion; Sand stabilization
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00148368
• Record Type: Publication
• ISBN: 0309025621
• Files: TRIS, TRB
• Created Date: Mar 15 1977 12:00AM