Laboratory calibration of earth pressure cells

Joseph F. Labuz, Brent Theroux

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The objective of this study was to design a simple apparatus for laboratory calibration of diaphragm type earth pressure cells (EPC). A new testing device was fabricated to permit the application of normal stress to the EPC using various types of soil and load configurations. With respect to fluid pressure, the response of the EPC can be different for the simplest earth pressure conditions because of an arching effect or nonuniform contact stress. For an EPC with a rigid outer rim, sensitivities computed from soil calibrations were lower than those determined from fluid calibrations by about 20 %.

Original languageEnglish (US)
Pages (from-to)188-196
Number of pages9
JournalGeotechnical Testing Journal
Volume28
Issue number2
StatePublished - Mar 1 2005

Keywords

  • Arching
  • Calibration
  • Earth pressure cell
  • Soil stress gage
  • Test procedure

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