PAVEMENT EVALUATION WITH THE FALLING-WEIGHT DEFLECTOMETER

The falling-weight deflectometer (FWD) is a reliable, simple, and yet effective tool to determine the structural properties of pavements for roads and runways. Its characteristics of level of force (up to 60 kN) and loading time (approximately 30 ms) are more representative of heavy traffic than are those of most other deflection equipment. The deflection of the pavement and the deflection bowl are determined by geophones (velocity transducers) in the center of the loaded area and at certain distances from the center. The deflection levels are not affected adversely by the configuration of loading or the recording system, nor by possible influences of unstable reference points such as are encountered with some alternative systems. /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:
    • VISSER, W
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  • Publication Date: 1978

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 103-104
  • Monograph Title: RESEARCH IN AIRPORT PAVEMENTS
  • Serial:

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Filing Info

  • Accession Number: 00189944
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: May 11 1979 12:00AM