Asphalt Pavement Instrumentation: The Quest for Truth

This paper presents the results of calibration experiments conducted for a variety of pavement sensor types, including subgrade moisture sensors, subgrade and base pressure plates, and asphalt strain sensors. These experiments were conducted as part of an ongoing research project to instrument a perpetual HMA pavement section of the Marquette Interchange in Milwaukee, Wisconsin. Experimental results for the sensors included in this study indicate the calibration values supplied by the manufacturers provide reasonable results. However, the accuracy of in-service measurements obtained from pavement sensors of this type may be improved through calibrations prior to installation. The primary challenge during calibrations of this type is the establishment of a reference “truth” for each sensor type. For those sensors tested in this study, this required the development of novel test protocol and the fabrication of sensor-specific testing apparatus. The calibration effort described in this paper outlines the development of sensor-specific relationships between the output of the instrument and its respective measurement values.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Photos; References; Tables;
  • Pagination: 18p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01044168
  • Record Type: Publication
  • Report/Paper Numbers: 07-3050
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 7:46PM