Rate Effects in Pressuremeter Tests in Clays
Publication: Journal of Geotechnical Engineering
Volume 113, Issue 11
Abstract
The response of soil loaded in a pressuremeter test is inherently time‐dependent; even for an “undrained” test in a clay, some consolidation will occur. The pressuremeter expansion will also be affected by creep of the soil skeleton, and thus both the results and the derived parameters will be influenced by the testing technique adopted. To examine the influence of time, the problem has been examined both experimentally and numerically. Pressuremeter tests have been simulated in the laboratory by expanding cylindrical cavities using different incremental pressure techniques in three types of clay prepared with known stress history, and the results compared with finite‐element predictions. The finite‐element program is based on critical‐state soil mechanics and includes both consolidation and deviatoric creep. This has given a new insight into the behavior of clays during pressuremeter tests. The results indicate that any simple standardization of pressuremeter test technique should be approached with caution.
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Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 113 • Issue 11 • November 1987
Pages: 1344 - 1358
Copyright
Copyright © 1987 ASCE.
History
Published online: Nov 1, 1987
Published in print: Nov 1987
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