A study of the responses of typical flexible and rigid airport pavements to static and dynamic loading is summarized. Two series of full-scale tests using instrumented aircraft and runways were made. Among the results were that (a) both types of pavements exhibited both elastic and inelastic responses; (b) these types of responses must be separated to interpret the data; (c) two different types of displacement responses (inertial and noninertial) are present; (d) bow waves and elastic vertical expansions about the wheels occur in both types of pavements; (e) the vertical pressures in both types of pavements are totally recoverable and elastic; (f) no basic aircraft ground operating mode induces pavement responses greater than those occurring for static load conditions, although under unusual conditions, such responses might occur; (g) pavement thicknesses can be reduced in the interiors of runways, but the pavement in exit areas of flexible runways should be stronger than that of main runways; (h) inelastic behavior is highly dependent on temperature, rate of load application, and load history; (i) in the velocity range of static load to low-speed taxi, inelastic displacements can be larger than elastic ones; and (j) the elastic behavior of stiff pavements is almost constant. Because the elastic and inelastic displacement behavior of pavements correlates to the behavior of the Waterways Experiment Station pavements test sections under simulated aircraft loads and wheel configurations and distributed traffic to the behavior of actual pavements under actual aircraft operations, further investigations of dynamic load effects can probably be conductd on pavement test sections of limited size. /Author/

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    • This paper appeared in TRB Special Report 175, Research in Airport Pavements. 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
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    Transportation Research Board

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  • Authors:
    • Ledbetter, Richard H
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  • Publication Date: 1978

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  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 87-91
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  • Accession Number: 00189939
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: May 11 1979 12:00AM