THE STRENGTH OF BITUMINOUS MIXTURES AND THEIR BEHAVIOR UNDER REPEATED LOADS

IN RECENT YEARS, RUTTING HAS BECOME A PROBLEM IN CERTAIN TYPES OF BITUMINOUS CONCRETE OVERLAYS. THE HIGHWAYS AFFECTED ARE GENERALLY THOSE SUBJECTED TO NUMEROUS REPETITIONS OF HEAVY WHEEL LOADS. CORES TAKEN FROM THE WHEEL TRACKS AND FROM BETWEEN THE WHEEL TRACKS INDICATE VERY LITTLE DIFFERENCE IN THE DENSITY OF THE MIXTURE IN THESE TWO AREAS. OVER A PERIOD OF TIME, DENSITY VALUES OF CORES INDICATE THAT DENSIFICATION OF THE ENTIRE OVERLAY HAS TAKEN PLACE. THIS MIGHT INDICATE THAT RUTTING IS A TYPE OF PLASTIC OR PERMANENT DEFORMATION. FROM THE UNCONFINED COMPRESSION TEST, RELATIONSHIP WAS DEVELOPED BETWEEN PEAK STRESS, RATE OF LOADING, AND TEMPERATURE. A RELATIONSHIP EXISTED AMONG LOAD REPETITIONS, PERMANENT DEFORMATION, TEMPERATURE AND RATE OF LOADING AT STRESSES LESS THAN THE PEAK STRESS. REGRESSION ANALYSIS WAS USED TO ESTABLISH THE AUTHENTICITY OF THE TWO EXPRESSIONS. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/35/35-025.pdf
• Supplemental Notes:
  • Vol 35, pp 405-417, 14 FIG, 4 TAB, 2 PHOT 13 REF. 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:
  • Wood, L E
  • Goetz, W H
• Publication Date: 1956

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Thirty-Fifth Annual Meeting of the Highway Research Board, Washington, D.C., January 17-20, 1956
• Serial:
  • Highway Research Board Proceedings
  • Volume: 35
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Accelerated tests; Asphalt concrete; Behavior; Bituminous mixtures; Compression tests; Overlays (Pavements); Plastic deformation; Regression analysis; Repeated loads; Strength of materials; Temperature
• Old TRIS Terms: Compressive strength tests
• Subject Areas: Data and Information Technology; Highways; Materials;

Filing Info

• Accession Number: 00211636
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 15 1971 12:00AM