ISSN: 1945-7545
CODEN: GTJODJ
Page Count: 5

Factors Affecting the Performance of a Pneumatic Earth Pressure Cell

Felio, GY
Assistant professor, University of California, Los Angeles, CA

Bauer, GE
Professor, Carleton University, Ottawa, Ontario

Abstract

Twenty pneumatic total earth pressure transducers of type SOLINST were installed on a bridge abutment. It was found that their performance was affected considerably by temperature, and to a lesser extent, by the installation procedure and the type of soil in contact with the pressure cells. In order to quantify these influences, an extensive laboratory investigation was undertaken. From this experimental study, correction factors were obtained and applied to the field data. It is suspected that other pneumatic pressure cells will be affected similarly and field measurements need to be corrected.

Keywords:
earth pressure cell, calibrations, stress, field instrumentation, in-situ stress, pressure transducer, correction factor, temperature effects

Paper ID: GTJ11036J
DOI: 10.1520/GTJ11036J
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