Sealed Double-Ring Infiltometers for Estimating Very Low Hydraulic Conductivities

The goal of this paper is to document the issues relating to measurement of in situ hydraulic conductivity of very low hydraulic conductivity materials, particularly asphalt concrete using sealed, double-ring infiltrometers (SDRIs). A new flow volume measurement device known as a constant head board (CHB) was developed and used alongside with flexible bags to measure the infiltration rate of the asphalt concrete barrier test pad. The design, construction, and use of the SDRI are presented followed by the design and operation of the CHB. A method to determine the hydraulic gradient based on the total flow quantity and air void content of the liner are presented. Flow quantity measurement, infiltration rate, and calculated hydraulic conductivity based on flexible bag and CHB options are presented and discussed.

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  • Authors:
    • Neupane, Deepak
    • Bowders, John J
    • Loehr, J Erik
    • Bouazza, Abdelmalek
    • Trautwein, Steve J
  • Publication Date: 2005-5


  • English

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  • Accession Number: 01001074
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 13 2005 3:22PM