A STUDY OF ASPHALT STRIPPING USING ELECTRON MICROSCOPY

A research laboratory designing underground sealing systems for nuclear waste areas has found the primary candidate for this sealing to be an asphalt emulsion. It appears that the study may have application to the use of asphalt in highways, particularly with regard to the debonding of aggregates (or stripping). As a result, the laboratory is cooperating with a study addressing the visual and mechanical measurements of this debonding. The visual portion of the study is being accomplished with the use of a scanning electron microscope. Two aggregates--one aggregate from an area in Idaho and a basalt aggregate from the Richland area--were precoated with a cationic asphalt emulsion. The precoated aggregates performed much better. This paper contains the narration to go along with nine slides presenting what one might see on the resulting micrographs.

• Supplemental Notes:
  • This paper was presented at a 1973 workshop on Water in Pavements sponsored by the Federal Highway Administration, held in Portland, Oregon.
• Corporate Authors:

  Federal Highway Administration

  Office of Research, Development, Engineering and Highway Operations, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Koehmstedt, P
• Conference:
  • Water in Pavements Workshop--Detailed Report--1973
• Publication Date: 1973

Language

• English

Media Info

• Pagination: p. 316-319

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt; Asphalt emulsions; Asphalt pavements; Basalt coarse aggregates; Electron microscopy; Highways; Pavement cracking; Precoated aggregates; Research projects; Stripping (Pavements)
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; Research; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00792278
• Record Type: Publication
• Files: TRIS, USDOT
• Created Date: May 6 2000 12:00AM