Quebec Contractor Experience with Unbonded Concrete Overlays
Bibliographic record
Abstract
With Quebec’s aging road network and increasing truck traffic, rehabilitation of the province’s main highways is an important issue for Quebec’s transportation ministry (MTQ). The use of a concrete overlay is an economical and environmentally sustainable solution, for both old concrete and old asphalt roads. This paper describes two concrete overlay projects for the rehabilitation of two sections of Highway 40 in the Greater Montreal Area: one over concrete pavement and one over asphalt pavement. The very first concrete overlay done for MTQ was applied on a 5 km stretch of 40-year-old concrete pavement in Vaudreuil. The project included the design, construction, and maintenance of the pavement for 10 years. The second unbonded overlay—and the first “whitetopping” in Quebec--was conducted in 2010. A 7 km portion of Highway A40 in L’Assomption with recurrent rutting problem was resurfaced with a concrete pavement.
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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 | 0.003 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.006 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.018 | 0.002 |
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".