Assessment of acoustic properties of different recycled polymer-based materials for road work sound barrier walls application
Bibliographic record
Abstract
This paper examines environmentally-friendly alternatives for rock and glass wools in sound barrier walls applications. Around road-work construction sites, the most disturbing frequencies are between 500 and 2,000 Hz. Therefore, the materials should be acoustically efficient within this frequency range, and all measurements should be carried out. More interestingly, those 3 materials seem to be better than rock or glass wool as they exhibit higher absorption coefficients. Only material D appears to be less efficient in spite of its larger thickness. This result can be ascribed to a lack of compaction as it has the lowest density among the 4 selected materials. It was shown that, in terms of sound absorption, the selected recycled fiber-polymers seem to be equal or better than rock or glass wool. Due to this encouraging result, acoustic characterization of the recycled material on an experimental on-scale sound barrier wall and modeling are presently in progress.
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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".