The preliminary development of an in situ test device, designated the field permeability testing device (FPTD), for determination of the permeability of highway base and subbase courses is described and discussed. The discussion in the report encompasses the three major tasks that were undertaken in the development of the preliminary FPTD; that is: Literature review and evaluation of field test methods; Design and construction of laboratory test areas; and Laboratory investigation of promising techniques. Based on the results of the Task A and Task C studies, it was concluded that the velocity method of in situ permeability determination represents a promising technique. The preliminary device utilizes electrical conductivity probes that also serve as pressure taps for head measurements. It is concluded that additional development work is required to adapt the device for field use and to insure its reliable and accurate operation under various field conditions. This work is to be accomplised in Phase II of the Project and will include both laboratory test area studies and field studies.

  • Corporate Authors:

    West Virginia University, Morgantown

    Department of Civil and Environmental Engineering
    Morgantown, WV  United States  26506-6103

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Moulton, L K
    • Seals, R K
  • Publication Date: 1977-12

Media Info

  • Pagination: 113 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00180896
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-RD-78- 21 Intrm Rpt., CES-4002
  • Contract Numbers: DOT-FH-11-9060
  • Files: NTIS, TRIS, USDOT
  • Created Date: Sep 14 1978 12:00AM