Evaluation of fibre-reinforced polymer post-tensioned slab bridges using the Canadian Highway Bridge Design Code
Bibliographic record
Abstract
Corrosion of steel reinforcement is a major concern for bridges throughout Canada, particularly where deicing salts are used. Fibre-reinforced polymers (FRPs) are not susceptible to corrosion, making them an attractive alternative to internal steel reinforcement for Canadian bridges. Due to the low stiffness of FRP materials, concrete members tend to have high deflections and large crack widths at service loads with serviceability limits governing their design. In addition, they tend to have lower shear capacities compared to similar steel-reinforced members. This study focuses on glass FRP (GFRP) reinforced slab strips cast with self-consolidating concrete (SCC) and post-tensioned with carbon FRP (CFRP) tendons to improve their serviceability, shear capacity, and deformability. The experimental results highlight the potential of an FRP reinforcement system for slab bridges combining passive GFRP reinforcement with prestressed CFRP tendons. The flexural performance of five FRP-reinforced slabs and one steel-reinforced control slab are compared to the design provisions of the Canadian Highway Bridge Design Code.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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".