The prediction of the effects of vehicle motion on pavements is time dependent. Current design procedures, however, account for this motion as a sequence of equivalent static conditions reduced to passes or coverages. A solution to this problem was obtained by verifying the following hypothesis. A pavement system operated on by a vehicular input produces an output response. Relating the two is a time-dependent transfer function that contains within it the properties of the system. This function is obtained, in a mathematical sense, by suing Laplace transformations without the need to simulate respective material performance or to determine values for preselected descriptors. The time-dependent transfer functions can be used to predict the response and the performance of a pavement system when it is subjected to an imposed load. The investigation was carried out be extending transfer function theory in connection with a finite convolution procedure to define the time-dependent transfer functions of a pavement. Moving trucks and aircraft were used in full scale dynamic tests in service environments (six highway and two runway cross sections). It was shown that the time-dependent transfer functions obtained represent the characteristics of flexible pavements. Changes in parameters of the functions reflect changes in the performance and the condition of the pavement. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 19-26
  • Monograph Title: Pavement surface properties, evaluation, and shoulders
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00189505
  • Record Type: Publication
  • ISBN: 0309028051
  • Files: TRIS, TRB
  • Created Date: Apr 12 1979 12:00AM