Post-fire impact behaviour of rubberized alkali-activated slag concrete
Bibliographic record
Abstract
Rubberized concrete is eco-friendly concrete with improved impact resistance. However, impact loads may also be combined with fire due to blasting, explosions, and earthquake. Hence, this study investigates the post-fire impact behaviour for rubberized alkali-activated slag (AAS) concrete. Static and dynamic properties of AAS mixtures, incorporating 5%, 10%, and 15% crumb rubber, were evaluated under ambient and after exposure to elevated temperatures (200, 400, and 600 °C). Results reveal that AAS properties' degradations were similar to ordinary Portland cement (OPC) at ambient temperature. At elevated temperatures, the differences in hydration products’ nature between AAS and OPC alternated the performance. The formed low Ca/Si ratio calcium silicate hydrated in the AAS exhibited higher stability at elevated temperatures. AAS with 10% rubber content showed an optimum impact performance. Above 400 °C, degradation of the binder microstructure and voids due to rubber particle decomposition adversely affected the impact performance of AAS. The addition of 0.5% steel tire wire showed a high potential sustainable solution to maintain adequate performance.
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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 | 0.000 | 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) | 0.001 | 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 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".