RELATION OF ASPHALT PAVEMENT VARIABLES TO PERFORMANCE /WITH DISCUSSION/

PLASTIC DEFORMATION IN ASPHALT PAVEMENTS DETERMINES THE CONTRIBUTION OF TWO IMPORTANT FACTORS, SLOPE VARIANCE AND RUT DEPTH, IN THE AASHO SERVICEABILITY EQUATION. PREVIOUS RESEARCH ON A LABORATORY TEST TRACK SHOWED THE DEPENDENCE OF PLASTIC DEFORMATION ON THE VISCOSITY OF THE ASPHALT UNDER PAVEMENT CONDITIONS. THIS RESEARCH HAS NOW BEEN EXTENDED TO DETERMINE, ON 66 PAVEMENTS, THE EFFECT OF PAVEMENT VARIABLES SUCH AS ASPHALT CONTENT, FINES CONTENT AND COMPACTION. FACTORS AFFECTING ASPHALT VISCOSITY /TEMPERATURE SUSCEPTIBILITY, MIXING AT HIGH TEMPERATURE, AND AGING IN THE PAVEMENTS/ WERE ALSO STUDIED. THE CONTRIBUTIONS AND INTERACTIONS OF PAVEMENT AND ASPHALT VARIABLES WERE COMBINED IN A SINGLE EQUATION BY MEANS OF LEAST SQUARES MULTIPLE REGRESSION, ENABLING COMPARISON OF THE RELATIVE EFFECTS OF COMMON VARIATIONS IN THESE PROPERTIES. RESULTS ARE ILLUSTRATED BY A BAR CHART. CHARTS PRESENTED RELATE ACTUAL DEFORMATION TO THAT PREDICTED BY THE REGRESSION EQUATION. THE BASIC FORM OF THE EQUATION SHOULD NOW BE TESTED WITH DATA FROM ACTUAL ROADS IN SERVICE. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1965/104/104-001.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:
  • Brunstrum, L C
  • Ott, L E
  • Sisko, A W
  • Speer, T L
  • Wilke, R A
  • Evans, J V
  • Foster, C R
• Discussers:
  • Foster, C R
  • Brunstrum, L C
  • Ott, L E
  • Sisko, A W
  • Speer, T L
  • Wilke, R A
  • Evans, J V
• Publication Date: 1965

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 1-17
• Monograph Title: Surface treatments, bituminous mixtures and pavements
• Serial:
  • Highway Research Record
  • Issue Number: 104
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt pavements; Depth; Forecasting; Formulas; Hot mix asphalt; Laboratory tests; Least squares method; Pavements; Plastic deformation; Regression analysis; Ruts (Pavements); Serviceability; Slopes; Temperature; Test tracks; Variance; Viscosity
• Identifier Terms: AASHO Road Test
• Uncontrolled Terms: Rut; Serviceability Index
• Old TRIS Terms: Aging
• Subject Areas: Data and Information Technology; Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00210281
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Oct 7 1994 12:00AM