A review on the behavior of <scp>FRP</scp> ‐reinforced ultra‐high‐performance concrete tubes
Bibliographic record
Abstract
Abstract This paper reviews previous research on ultra‐high‐performance concrete (UHPC) tubes confined with fiber‐reinforced polymer (FRP). It summarizes current studies and provides insights for future research. UHPC‐filled FRP tubes with different fiber types and tube thicknesses were tested to investigate their mechanical properties. It focuses on how different FRP types and numbers of FRP layers affect failure modes, mechanical properties, energy absorption, and ductility. Generally, the specimens failed by rupture of the tube at or near the midheight. Similar to conventional concrete, test results showed significant enhancements in the ultimate strength and strain of UHPC compared with its unconfined counterpart. For the same level of FRP confinement, the highest increase in ultimate strength is observed in CFRP‐confined UHPC columns, as CFRP has higher stiffness compared to other FRP types such as AFRP and GFRP. The paper also examines models used to simulate experimental results, helping to understand UHPC behavior under FRP confinement better.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".