SYSTEM FOR SUMMATION OF LOAD-INDUCED PAVEMENT STRAINS TO PRODUCE A RUT PROFILE (ABRIDGEMENT)

An attempt is made to show that it is possible to characterize the permanent deformation behavior of pavement materials, and that a simple computer program may be used to predict the amount of rutting that will occur in a pavement. The creep bahavior of a glacial till (Dublin boulder clay) and a road-base material (dense bitumen macadam) was studied. An equation is given which illustrates the form of increase of strain and stress and number of load applications for the two materials. The relation linking the permanent strain behavior of a dense bitumen macadam in dynamic and static laboratory creep tests is suggested. It is shown that the permanent deformation results of dynamic tests may be predicted by static tests in which the stress levels are set at therms values of the stress pulse of the dynamic tests. A finite-element program has been adapted to give the stresses, elastic strains, and permanent change in surface profile in a 4-layer road pavement due to the passage of rolling wheel loads. The computer program, DEFPAV (described in the paper), may incorporate up to 8 creep laws, any one of which may be used to describe the creep of a certain layer.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/616/616-006.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=SYSTEM+FOR+SUMMATION+OF+LOAD-INDUCED+PAVEMENT+STRAINS+TO+PRODUCE+A+RUT+PROFILE+(ABRIDGEMENT)&author=M.+Snaith&author=R.+Kirwan&publication_year=1976
• Availability:
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Strength and Deformation Characteristics of Pavement Sections. 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:
  • Snaith, M S
  • Kirwan, R W
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 31-33
• Monograph Title: Soil mechanics: rutting in asphalt pavements, embankments on varved clays and foundations
• Serial:
  • Transportation Research Record
  • Issue Number: 616
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Base course (Pavements); Computer programs; Creep; Deformation; Dynamic tests; Forecasting; Loads; Macadam; Ruts (Pavements); Static loads; Strain (Mechanics); Stresses; Till; Wheel loads
• Uncontrolled Terms: Profiles; Rut
• Old TRIS Terms: Strains
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00162993
• Record Type: Publication
• ISBN: 0309025958
• Files: TRIS, TRB
• Created Date: Oct 13 1977 12:00AM