A STUDY OF TRANSLUCENT ASPHALTIC FILMS

THIN FILMS OF ASPHALTIC MATERIALS HAVE BEEN WEATHERED NATURALLY AND ARTIFICIALLY AND THEN STUDIED MICROSCOPICALLY BY TRANSMITTED LIGHT. ONE REACTION, DESIGNATED AS COAGULATION, OCCURS IN SOME POSITIVE OLIENSIS SPOT TEST MATERIALS UNDER NEARLY ALL TEST CONDITIONS. OBSERVATIONS AND SOLUBILITY CHARACTERISTICS INDICATE THE COAGULATED FILM, AT ITS FORMATION TIME, TO BE COMPOSED OF A DISPERSED SOLID PHASE AND A CONTINUOUS LIQUID PHASE. THIS REACTION IS BELIEVED TO BE VERY IMPORTANT IN THAT IT GIVES A METHOD OF DETERMINING THE COMPATIBILITY OF AN ASPHALT MIXTURE. OTHER CHARACTERISTICS SUCH AS HARDENING, CHECKING, WRINKLING, FLOCCULATION, PRECIPITATION, AND THE FORMATION OF WAXY BODIES HAVE BEEN OBSERVED MICROSCOPICALLY. PHOTOMICROGRAPHS OF THESE ASPHALTIC FILM CHARACTERISTICS ARE PRESENTED. /AUTHOR/

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/17/17Pt1-030.pdf
• Supplemental Notes:
  • Vol 17, ParT I, PP 368 - 383, FIG, 4 TAB, PHOT. 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:
  • Benson, J R
• Publication Date: 1938

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Seventeenth Annual Meeting of the Highway Research Board Held at Washington, D.C. November 30, December 1, 2, 3, 1937. Part I
• Serial:
  • Highway Research Board Proceedings
  • Volume: 17
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt; Coagulation; Concrete hardening; Film; Flocculating agents; Fracture mechanics; Hardness; Light; Microscopy; Mixtures; Weathering
• Uncontrolled Terms: Characteristics
• Old TRIS Terms: Flocculating; Photomicrographs; Precipitation; Translucence; Transmittance
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00211548
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 15 1971 12:00AM