Constant Rate of Strain Consolidation Testing of Saturated Cohesive Soils Without Back Pressure Saturation
Bibliographic record
Abstract
Abstract ASTM D4186/D4186M-12, Standard Test Method for One-Dimensional Consolidation Properties of Saturated Cohesive Soils Using Controlled-Strain Loading, requires back pressure saturation for all specimens to accurately measure pore fluid pressure and flow behavior. Constant rate of strain (CRS) consolidation testing performed without back pressure saturation has the potential to provide significant time and cost savings, as the need for costly back pressure saturation equipment and the time required for specimen back pressure saturation would be eliminated. The results of one-dimensional CRS consolidation comparison tests performed with and without back pressure saturation on high quality Sherbrooke block and 76-mm diameter modified tube specimens and on reconstituted specimens of low overconsolidation ratio, soft, saturated clays are presented herein. Comparison of the compression curves from specimens tested with and without back pressure saturation, especially at stresses greater than the estimated in situ vertical effective stress, show good agreement. Flow behavior between the two types of specimens is more erratic at low stresses but becomes more comparable as the effective stress level increases. It can be concluded from the results that accurate CRS consolidation stress–strain behavior can be measured for saturated specimens tested without back pressure saturation for stresses greater than the in situ vertical effective stress.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".