AGGREGATE INTERLOCK: A PURE-SHEAR LOAD TRANSFER MECHANISM

A finite element investigation was made of the behavior of jointed or cracked pavement systems equipped with a pure-shear load transfer mechanism, such as aggregate interlock. Dimensional analysis was used in the interpretation of the data, leading to a general definition of the relative joint stiffness of the pavement system in terms of its structural characteristics. Results obtained in this study were verified by comparisons with earlier published field, laboratory, and analytical information. The investigation demonstrated that deflection load transfer efficiency is related to stress load transfer efficiency and that this relationship is sensitive to the size of the applied loading (or to the gear configuration). A simple back calculation procedure is outlined to evaluate the in situ joint stiffness of such pavements. Pure-shear load transfer devices are shown to be particularly desirable under a combined externally applied and thermal loading condition, since they offer no additional restraint to longitudinal curling.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1990/1286/1286-002.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=AGGREGATE+INTERLOCK%3A+A+PURE-SHEAR+LOAD+TRANSFER+MECHANISM&author=A.+Ioannides&author=G.+Korovesis&publication_year=1990
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1286, Design and Evaluation of Rigid and Flexible Pavements 1990. 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:
  • Ioannides, Anastasios M
  • Korovesis, George T
• Publication Date: 1990

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 14-24
• Monograph Title: Design and evaluation of rigid and flexible pavements
• Serial:
  • Transportation Research Record
  • Issue Number: 1286
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Aggregates; Backcalculation; Dimensional analysis; Field tests; Finite element method; Flexible pavements; Joints; Load transfer; Pavement cracking; Stiffness
• Old TRIS Terms: Insitu methods; Interlocking; Joint; Jointed pavements
• Subject Areas: Data and Information Technology; Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00607721
• Record Type: Publication
• ISBN: 0309050707
• Files: TRIS, TRB, ATRI
• Created Date: Apr 30 1991 12:00AM