Evaluation of Compressibility, Anisotropy and At-rest Lateral Earth Pressure in Champlain Sea Clays
Bibliographic record
Abstract
An experimental study is undertaken to evaluate the characteristics of the sensitive Champlain Sea clay.Undisturbed samples obtained from a site in Ottawa were trimmed along both the vertical and horizontal orientations for consolidation and simple shear tests.The results of the one-dimensional consolidation tests indicate that the vertical orientation has greater preconsolidation pressures than the horizontal orientation.The ratio of the horizontal to vertical preconsolidation pressure varies from 0.71 to 0.95.Consolidation along the horizontal orientation leads to higher (1% to 23%) compression indices than those in the vertical orientation.The values of the coefficients of consolidation and permeability in the horizontal orientation are found to be larger than those in the vertical orientation, and the ratios of both coefficients of consolidation and permeability in the horizontal orientation to that in the vertical orientation evolve as the effective vertical stress increases.Generally, the at rest lateral earth pressure coefficient in the horizontal orientation was greater than that in the vertical orientation.The average ratio of the at rest lateral earth pressure coefficient throughout all tests (5.82 m to 21.55 m) ranges from 0.90 to 1.82 during the entire stress history.Based on the observation of one-dimensional consolidation tests, it is noted that sensitive Champlain Sea clay shows anisotropic behaviour with respect to the ratios of the horizontal-to-vertical coefficient of consolidation, permeability and the at rest lateral earth pressure coefficient.The undrained monotonic simple shear resistance is somewhat dependent on sample orientation.Test results indicate that samples in the vertical orientation have lower peak and residual shear strengths than those sampled along the horizontal orientation.The
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".