Effects of concrete non-homogeneity on Rayleigh waves dispersion
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Bibliographic record
Abstract
This article presents the spectral analysis of surface waves (SASW) technique and describes an experimental investigation concerning its ability to non-destructively assess the variation of elastic properties within Portland cement concrete structures. SASW tests were conducted on three concrete slabs, 1·4 m × 1 m × 0·5 m in size, and having different compressive strength (f′ c : 17·5, 27 and 53 MPa). Tests were also conducted on a layered concrete slab, 2 m × 2 m × 0·7 m in size, and made up of a base layer, an intermediate layer and a top layer having compressive strength of 53, 27 and 17.5 MPa, respectively. The results show that the propagation velocity of Rayleigh waves is very sensitive to variations in concrete quality and that the SASW technique offers a practical tool to determine the extent of near-surface damage observed in in-service concrete structures.
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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 | 0.001 | 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 it