Mechanical Properties of the Active Layer for Pavement Design in Permafrost Conditions
Bibliographic record
Abstract
When designing road and airfield embankments over permafrost, thermal stability of the subgrade soil is often considered to be a key consideration for the overall stability of the structure. When the facility is built over thaw sensitive soil, the general approach is to attempt to raise the permafrost level underneath the embankment in order to avoid the risk of thermal degradation of thaw sensitive soils. However, in many cases, part of the active layer underneath the pavement is subject to thawing during summer. Information on the mechanical properties of thawing soils in a permafrost context is scarce and this factor is rarely taken into consideration when designing pavements to be constructed in permafrost regions. This paper summarizes the findings of a study of the mechanical properties of soils in the active layer near the Tasiujaq airstrip in Nunavik (Quebec, Canada). The study was done using the dynamic cone penetrometer and the light-weight deflectometer. The paper will also discuss the practical implications for pavement design considerations.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 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".