INSTRUMENTATION FOR FLEXIBLE PAVEMENTS--FIELD PERFORMANCE OF SELECTED SENSORS. VOLUME I: FINAL REPORT

This report presents the results of a research study on methods for measuring strain and stress in bituminous pavements subjected to dynamic vehicle loading. The research program was divided into two phases. In the first phase, an extensive literature search was conducted to identify the existing pavement instrumentation and to select the most promising types of gauges for a field testing program. Two sections of bituminous pavement 6 and 10 in. (152 and 254 mm) thick were constructed and instrumented with the selected gauges. The response of the gauges to dynamic loading applied by a tractor-semitrailer at different levels of axle loading, tire pressure, and speed was investigated. In the second phase, new concepts in pavement instrumentation were investigated. Prototype gauges were built and evaluated, first in the laboratory and then in a field testing program similar to the one conducted in the first phase. Two new gauges, an inductive sensor and the Hall effect sensor, performed very well in the tests. The pavement response data, collected in the field testing program, were used to evaluate methods for backcalculating pavement material properties. It was demonstrated that the backcalculated moduli are much more accurate if data from multiple sensors placed throughout the pavement structure, rather than a single sensor measurements, are used in the analysis.

  • Supplemental Notes:
    • See also Volume II: Appendices, FHWA-RD-91-095.
  • Corporate Authors:

    Pennsylvania State University, University Park

    Pennsylvania Transportation Institute, Transportation Research Building
    University Park, PA  United States  16802

    Federal Highway Administration

    Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
    McLean, VA  United States  22101
  • Publication Date: 1992-6

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 314 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00624940
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-RD-91-094, PTI 9118, 3C3A-2312
  • Contract Numbers: DTFH61-88-R-00052
  • Files: TRIS, ATRI, USDOT
  • Created Date: Sep 15 1993 12:00AM