Thermal Characteristics of Warm and Hot Mix Asphalt during Construction
Bibliographic record
Abstract
One of the critical issues during the construction of a new asphalt road is the temperature distribution along and across the newly laid hot mix, which affects the resulting density and ultimately the performance of the mat. This is of particular importance at longitudinal joints that are most often constructed with a hot layer placed beside an existing colder or older layer. Reduced density at longitudinal joints has been linked with premature failure at these locations, as well as the pavement in general. Thermal imaging offers the opportunity to better assess the quality of newly laid asphalt layers by observing areas of low, high and/or variable temperature during the construction process. This paper presents the details of a pilot study carried out both warm and hot asphalt mixes on Victoria Road in Ottawa, Ontario, Canada, using infrared imaging equipment to analyze the temperature distribution and evolution of the asphalt surface and the joints between mats during construction. While preliminary in nature, the results suggest that rapid heat loss at the edges of newly placed hot mix asphalt lanes likely leads to reduced density and performance of the longitudinal joints, whereas less heat loss was observed with the warm mix. (A)
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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".