Analysis of PMTs, SBPMTs, and VSTs in a Stiff Clay of Quebec
Analysis of PMTs, SBPMTs, and VSTs in a Stiff Clay of Quebec
The objective of the present paper is to compare field test results obtained in a stiff sensitive clay of Quebec using pre-bored pressuremeter tests (PMTs) with those obtained from both self-boring pressuremeter tests (SBPMTs) and vane shear tests (VSTs). It is shown that the undrained shear strength deduced from PMTs is greatly overestimated with respect to the values found from SBPMTs and VSTs. Discrepancies are thought to arise from both initial disturbance and unloading caused by drilling of the pilot holes prior to the performance of the PMTs. The paper demonstrates that it is possible to combine the expansion curves found in the PMTs with those determined in the SBPMTs to obtain a better insight of the deformation mechanisms involved in the expansion process.
Vincenzo Silvestri; Ghassan Abou-Samra
8th International Symposium on Pressuremeters (ISP2025)
Data Interpretation and Analysis
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