On the Measurement of Water Pressure in Soils with High Suction Tensiometers

Past studies on the use of high suction tensiometers for measuring negative pore water pressure have focused on 3 different aspects, namely, initial saturation of the probe, calibration over both positive and negative pressure ranges, and measurement procedures. Among these 3 areas, the one focusing on measurement procedures has undeservedly received less attention. Aspects related to measurement conditions during lab or field tests are as important as initial preconditioning or calibration of the probe. According to the particular type of measurement, different aspects of the testing procedure have to be considered in order to obtain accurate readings of pore water pressure. This note presents preliminary data to highlight the importance of factors, such as measurement time, soil-probe contact, and material type, when measuring suction by means of high suction tensiometer.

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  • Authors:
    • Lourenco, S D N
    • Gallipoli, D
    • Toll, D G
    • Evans, F D
  • Publication Date: 2009-11

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01147338
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 28 2009 4:45PM