EFFECTS OF ASPHALT VISCOSITY ON PHYSICAL PROPERTIES OF ASPHALTIC CONCRETE

A STUDY IS REPORTED ON THE EFFECTS OF THE VISCOSITY OF THE BINDER AT MIXING AND COMPACTING TEMPERATURES ON THE MARSHALL STABILITY OF BITUMEN-MINERAL MIXES. THE AGGREGATE WAS CRUSHED PIT GRAVEL CONTAINING LIMESTONE AND IGNEOUS ROCK WITH A LIMESTONE FILLER, AND THE BITUMEN WAS 85-100 PENETRATION GRADE. PROCEDURES AND EXPERIMENTAL WORK ARE DESCRIBED. TEST RESULTS ARE PRESENTED IN GRAPHS AND DISCUSSED. VARIATIONS IN BINDER VISCOSITY AT MIXING AND AT COMPACTION GAVE SIGNIFICENT DIFFERENCES IN MARSHALL STABILITY, FLOW, SPECIFIC GRAVITY, PERCENTAGE OF VOIDS, AND PERCENTAGE OF VOIDS FILLED WITH BITUMEN. VARIATIONS IN FILLER/BITUMEN RATIO BY WEIGHT /1.81 TO 2.38/ ALSO GAVE SIGNIFICENT DIFFERENCES IN TEST VALUES OF PHYSICAL PROPERTIES OF THE MIX FOR IDENTICAL COMBINATIONS OF MIXING AND COMPACTING VISCOSITY OF THE BITUMEN.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1965/67/67-004.pdf
• Supplemental Notes:
  • 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:
  • Bahri, Gandharv Raj
  • Rader, Lloyd F
• Publication Date: 1965

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 59-83
• Monograph Title: Bituminous materials and mixes
• Serial:
  • Highway Research Record
  • Issue Number: 67
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt; Asphalt concrete; Binders; Bitumen; Bituminous mixtures; Compaction; Crushed aggregates; Equipment; Fillers (Materials); Graphics; Limestone; Limestone fillers; Marshall test; Mixing; Physical properties; Physics; Properties of materials; Specific gravity; Stability (Mechanics); Temperature; Tests; Viscosity; Void ratios
• Uncontrolled Terms: Graphical analysis
• Old TRIS Terms: Marshall stability marshall stability & flow test flow; Mixing temperature; Void
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00210528
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Dec 12 1994 12:00AM