CONDITION ASSESSMENT OF FRP-STRENGTHENED CONCRETE BRIDGE DIAPHRAGMS USING NON-DESTRUCTIVE TESTING
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Carbon fibre-reinforced polymer (CFRP) materials are lightweight, corrosion-resistant composite materials extensively used to strengthen or retrofit deteriorated concrete bridge components. The retrofitting process is usually a multi-stage manual process with the inherent capability of introducing defects at the various stages of work. In this paper, a methodological approach involving various nondestructive testing (NDT) techniques has been developed for a detailed condition assessment of the state of damage in deteriorated concrete bridge diaphragms. These three diaphragms from a major Canadian bridge were externally retrofitted with multiple layers of CFRP materials and subjected to years of environmental exposure. In addition, a detailed comparison of results obtained from the NDTs and visual inspection is presented. Several issues were identified, including CFRP delamination, material incompatibility, discolouration due to corrosion, inter-fibre cracks, and fundamental problems arising from the construction of the bridge diaphragms and installation of the CFRP.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.005 |
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