Faced with a demand for increased inspection and testing services due to rapid development, Fairfax County, Virginia, is using non-destructive testing (NDT) for quality assurance of road construction by private developers. Nearly all new roads in the county are flexible bituminous concrete pavements. A mobile, heavy mass Dynamic Loading System is used for the NDT program. The equipment is designed to generate a dynamic load on the pavement surface and measure the resultant vertical response of the pavement, including subgrade soil, base stone, and bituminous concrete layers. An on-board microcomputer allows for rapid road deflection data processing in the field and test results are directly referenced to observed conditions. The actual data are compared to the theoretical pavement response. Areas not meeting the computed theoretical response are noted for additional conventional testing.

  • Availability:
  • Authors:
    • Jankiewicz, E J
    • Beben, J A
  • Publication Date: 1989-9

Media Info

  • Features: Photos;
  • Pagination: p. 113-114
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00488054
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1989 12:00AM