CHANGES IN PROPERTIES OF BITUMEN IN THE SURFACE LAYERS OF ROLLED-ASPHALT WEARING COURSES PART I. DEPENDENCE OF THE SURFACE TEXTURE OF THE ASPHALT ON THE TYPE OF BITUMEN

THE INFLUENCE OF THE TYPE OF BITUMEN ON DURABILITY AND SURFACE TEXTURE OF ROLLED-ASPHALT SURFACING HAS BEEN EXAMINED IN A FULL-SCALE EXPERIMENT USING BINDERS FROM TEN DIFFERENT CRUDE SOURCES. IT HAS BEEN FOUND FOR THE MAJORITY OF THE BINDERS THAT, PROVIDED SUFFICIENT BINDER IS USED, ROLLED-ASPHALT SURFACINGS ARE VERY DURABLE BUT THAT VERY DIFFERENT SURFACE TEXTURES, AND HENCE RESISTANCES TO SKIDDING, WERE DEVELOPED BY THE SURFACINGS. MATERIALS MADE WITH SOME BITUMENS BECAME VERY SMOOTH, OTHERS BECAME VERY ROUGH ALTHOUGH STILL DURABLE, AND THE REMAINDER DEVELOPED A TEXTURE INTERMEDIATE BETWEEN THESE TWO EXTREMES. THE PERFORMANCES OF THE MATERIALS IN THIS RESPECT ARE TRACED TO THE SUSCEPTIBILITY OF THE CONSTITUENT BINDERS /A/ TO HARDEN BY WEATHERING, /B/ TO BE FLUXED WITH LUBRICATING OIL DROPPED BY VEHICLES, AND /C/ TO RESIST THE LEACHING ACTION OF WATER. THE EFFECT OF THESE PROCESSES HAS BEEN EXAMINED BY A TECHNIQUE INVOLVING RECOVERY AND MEASUREMENT OF VISCOSITY OF VERY SMALL QUANTITIES OF BITUMEN FROM THE TOP FEW HUNDREDTHS OF AN INCH OF THE SURFACE. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1966/134/134-003.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Characteristics of Bituminous Materials and presented at the 45th Annual Meeting. 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:
  • PLEASE, A
  • Mayer, F E
• Publication Date: 1966

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 36-50
• Monograph Title: Bituminous materials
• Serial:
  • Highway Research Record
  • Issue Number: 134
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt; Binders; Bitumen; Bituminous materials; Durability; Leaching; Lubricating oils; Surface treating; Texture; Viscosity; Wearing course (Pavements); Weathering
• Old TRIS Terms: Bituminous surfacing; Skid restance
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00210308
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Nov 18 1994 12:00AM