FATIGUE LIFE PREDICTION

That bituminous highway and airfield pavements can and should be designed in part to control fatigue distress is no longer questionable. This state-of-the-art paper describes how such a design can be accomplished by means of the phenomenological approach and emphasizes those procedures essential to the prediction of fatigue life. Each element of the design process is presented in terms of a comprehensive flow that depicts not only the interrelations among individual elements but also the chronological sequence within which the individual elements are addressed. Critical stresses and strains in the pavement structure can be estimated sufficiently well by means of elastic, multilayered analysis. That analysis is made tractable only by approximating the continuous spectra of traffic loads and physical states of the pavement by means of discrete categories. Failure criteria relating the number of load applications causing failure to the calculated strain level and other variables are used to estimate the fatigue damage caused by 1 application of each traffic load while the pavement is in each physical state. The total accumulation of fatigue damage during the design life is estimated by the hypothesis of the linear summation of cycle rate (Miner's hypothesis). Failure criteria for use in routine design can probably best be developed from analyses of the performance of in-service pavements. However, methods of structural analysis, materials characterization, and pavement-state categorization must be identical during both development of the criteria and the application to design. Proper selection of the physical-state categories affords an excellent opportunity for relistically recognizing the effects of environmental variables on pavement performance and design. /Author/

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  • Supplemental Notes:
    • Appeared in Structural Design of Asphalt Concrete Pavements to Prevent Fatigue Cracking. Proceedings of a Symposium held January 22, 1973. 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:

    Highway Research Board

    2101 Constitution Avenue, NW
    Washington, DC    20418
  • Authors:
    • Deacon, John A
  • Conference:
  • Publication Date: 1973

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 78-92
  • Monograph Title: STRUCTURAL DESIGN OF ASPHALT CONCRETE PAVEMENTS TO PREVENT FATIGUE CRACKING
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00272018
  • Record Type: Publication
  • ISBN: 030902160X
  • Files: TRIS, TRB, ATRI
  • Created Date: Sep 19 1974 12:00AM