Rapid Triaxial Frequency Sweep Testing of Reclaimed Asphalt Pavement Materials
Bibliographic record
Abstract
The objective of this research was to determine the technical feasibility of using reclaimed asphalt pavement rubble materials as a structural base layer in City of Saskatoon pavement structures. This research compared the conventional and mechanistic behavior of crushed reclaimed asphalt pavement rubble materials across asphalt emulsion and cement stabilization systems to conventional granular base material under realistic field state conditions. Rapid triaxial frequency sweep testing was used to quantify the time-dependent response and the stress-dependent response of the material. For the purposes of this study, crushed reclaimed asphalt pavement rubble materials were tested using frequency sweep testing to determine suitability for use as a 100 percent reclaimed asphalt pavement base layer. Cement and emulsion stabilization systems were also examined. Frequency sweep testing was performed at room temperature of 20oC and at four stress states and four frequencies, representative of field state conditions in Saskatoon, Saskatchewan. The findings of this research indicate that reclaimed asphalt pavement rubble materials have improved mechanistic structural properties compared to conventional granular materials. Overall, the reclaimed asphalt pavement treated with two percent cement showed the most improvement in stiffness over untreated samples. The cohesive and viscoelastic effects of the residual asphalt cement present in the reclaimed asphalt pavement plays a significant role in its superior mechanistic behaviour relative to conventional base materials. Using reclaimed asphalt pavement as a base layer is technically feasible and provides beneficial economic implications because the capital costs of virgin granular base are greater than those of reclaimed asphalt pavements.
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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 | 0.017 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 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".