The acoustic effects of diamond grinding Portland cement concrete pavement surfaces
Bibliographic record
Abstract
Transversely tyned Portland Cement Concrete (PCC) pavement surfaces generate very high levels of road traffic noise. A couple of years ago it was suggested, largely on the basis of experiences in the USA and Canada, that the introduction of narrow longitudinal grooves to these pavement surfaces would attenuate the noise. The longitudinal grooves would be applied through a process known as diamond grinding. Following that suggestion, diamond grinding was undertaken on several sections of PCC pavement surfaces in rural New South Wales (NSW) and in metropolitan Sydney. The diamond grinding was done for the NSW Roads and Traffic Authority (RTA) on roads under its jurisdiction as part of an ongoing development program. The present paper documents the conduct and outcomes of a series of investigations aimed at determining the acoustic effects of this diamond grinding process. The primary objectives of these investigations were to determine the road traffic noise characteristics of the original pavement surfaces investigated and to determine how these characteristics changed after the diamond grinding process. The outcomes of these investigations demonstrated, contrary to expectation, that the diamond grinding process had little or no effect on the road traffic noise generated on the pavement surfaces studied.
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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".