CHARACTERIZING PREMATURE DEFORMATION IN ASPHALT CONCRETE PLACED OVER PORTLAND CEMENT CONCRETE PAVEMENTS

An analytical study of the problem of premature deformation in asphalt concrete overlays of concrete pavements is presented; topics that have not been investigated previously are suggested for consideration. Premature deformation is considered to be the development of failure level rutting after only 1 or 2 years of service. The study indicates that there are stress and strain fields in an overlay that have not been considered in previous analysis procedures, which could indicate why premature rutting developing on Interstate pavements could be different when the original surface is concrete than when it is asphalt. The strain energy of distortion, or octahedral shear stress, was chosen from a study of failure theories as best representing the stress state relating to the onset of inelastic deformation under one load cycle rather than only the vertical stress as is usually used. Analysis indicates that different stress conditions can develop in the overlay when it is placed on a concrete surface compared with when it is placed on an asphalt surface. Interface bonding between the overlay and the original surface alters this stress state, which is very much closer to a failure condition than previously believed. The computer analysis indicates that current testing does not model the material behavior at a stress level or with boundary conditions comparable to those existing in the field. Material nonlinearity under field conditions, and the proximity of the existing stresses to a failure state for that material, may indicate why current procedures have not been able to accurately characterize a material's potential for rapid permanent deformation failure within the first 1 or 2 years.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1986/1070/1070-005.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=CHARACTERIZING+PREMATURE+DEFORMATION+IN+ASPHALT+CONCRETE+PLACED+OVER+PORTLAND+CEMENT+CONCRETE+PAVEMENTS&author=S.+Carpenter&author=T.+Freeman&publication_year=1986
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309040647
• 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
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Carpenter, Samuel H
  • Freeman, Thomas J
• Publication Date: 1986

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 30-41
• Monograph Title: PAVEMENT RESPONSE, EVALUATION, AND DATA COLLECTION
• Serial:
  • Transportation Research Record
  • Issue Number: 1070
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt concrete; Bonding; Concrete pavements; Deformation; Failure; Interfaces; Nonlinear systems; Overlays (Pavements); Portland cement concrete; Ruts (Pavements); Shear stress; Strain (Mechanics); Stresses
• Uncontrolled Terms: Nonlinearity; Rut
• Old TRIS Terms: Failure condition; Strains
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00474268
• Record Type: Publication
• ISBN: 0309040647
• Files: TRIS, TRB
• Created Date: Oct 31 1987 12:00AM