Investigation of Creep Rupture Phenomenon in Glass Fibre Reinforced Polymer (GFRP) Stirrups
Bibliographic record
Abstract
Glass Fibre-Reinforced Polymer (GFRP) bars offer a feasible alternative to typical steel reinforcement in concrete structures where there are concerns of corrosion or magnetic interference. In order to design safe structures for a service life of 50 to 100 years, the long-term material properties of GFRP must be understood. Thirty GFRP stirrups of three types were tested under sustained loading to investigate creep rupture and modulus degradation behaviour. The time to failure under varying sustained loads was used to extrapolate the safe design load for typical service lives. It was found that shear critical beams with shear reinforcement designed in accordance with CSA-S806 and ACI-440 provisions may be at risk of premature failure under sustained design loads. Analysis was based on finite element modelling and previously tested beams. Additionally, no moduli degradation was observed in this study. A cumulative weakening model was developed to potentially take into account fatigue loading.
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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) | 0.004 | 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".