Early-age cracking of steel and GFRP-reinforced concrete bridge barriers
Bibliographic record
Abstract
This paper presents the preliminary results of an experimental study to investigate the shrinkage and cracking behaviour of GFRP- and steel-reinforced concrete barriers subjected to real environmental and load conditions. This study was conducted through a collaboration project between the University of Sherbrooke and Ministry of Transportation of Quebec (MTQ). The main objective of this investigation was to evaluate the restrained shrinkage cracking behaviour of median barriers (Type MTQ 202ME) reinforced with GFRP and galvanized steel bars and fabricated using high-performance concrete (Type MTQ XIII) with a compressive strength of 50 MPa after 28 days. The barrier under investigation was incorporated in a new Highway 410 Overpass Bridge, located in Sherbrooke, Quebec, which was cast in June 2010. The barrier included one section reinforced with GFRP bars while the second section was reinforced with galvanized steel bars which, in turn, was divided into two sub-sections with different amounts of longitudinal reinforcement (8 bars and 12 bars). The barrier was instrumented with a set of sensors including: fibre optic sensors, vibrating wire strain gauges, electrical resistance strain gauges, and thermometers to capture the strain and temperature evolutions along the barrier length. The behaviour of the barrier for the first few months is presented and discussed in this paper.
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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".