Experimental determination of the residual compressive strength of fire-damaged concrete columns retrofitted using CFRP wrapping
Bibliographic record
Abstract
The study presented in this paper aimed to experimentally investigate the residual compressive strength of fire-damaged concrete columns retrofitted using carbon fibre-reinforced polymer (CFRP) wrapping sheets. The experimental program involved testing ten column specimens (200 mm × 200 mm × 1500 mm) that were previously exposed to standard fire before being retrofitted using CFRP wrapping sheets. The study imitated a real-life scenario in which concrete columns previously exposed to one- and two-hour standard fire while being subjected to service loads (20% and 40% of the column’s ultimate design capacity) were retrofitted using one and two layers of CFRP wrapping sheets. The test results showed that the effect of increasing the applied load ratio in reducing the post-fire residual compressive strength was more pronounced in the columns wrapped with two layers of CFRP sheets and exposed to a longer fire duration (2 h).
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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".