Large strain shearing behaviour of untreated and polymer treated clayey silt slurry specimens
Bibliographic record
Abstract
Polymer treatment (PT) of tailings has been observed experimentally and in physical models, resulting, in some cases, in changes to geotechnical properties including: (i) higher hydraulic conductivity, (ii) lower density at a particular vertical effective stress, (iii) a change to the critical state line (CSL), and (iv) different penetrometer response when at the same in situ state. The different CSLs observed could be theorised to converge at sufficiently high strain once the PT fabric had broken down through shearing. However, the available penetrometer test results in controlled centrifuge experiments do not support the suggestion of converging CSLs, with drastically different cone penetration test (CPT) resistance seen in PT clayey silt of importance as the CPT represents a large strain measure. To further investigate PT effects on shearing, a series of multi-stage direct simple shear and constant volume ring shear tests was carried out to investigate the large strain response of untreated (UT) and PT specimens. The tests showed consistently higher, or similar, large strain strengths from PT specimens despite their lower consolidated densities. This result is generally consistent with previous observations of an increase to CSL elevation from PT.
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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) | 0.003 | 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".