Temperature-Induced Changes in Binders Produced from Concrete Waste: Strength and Rehydration Mechanisms
Bibliographic record
Abstract
This study aims to investigate the effect of elevated temperatures simulating fire exposure conditions on the strength and rehydration behavior of binders produced from concrete waste.The concrete waste was ground in a laboratory mill to a specific surface area of approximately 350 m 2 /kg.The binder was burned at 400 and 600℃.Compression and density tests showed that the mechanical properties were not significantly affected at 600℃.The microstructure of the samples was analyzed, and the results indicated that the natural behavior of the samples during hydration and aging was identical to that of reference samples.Differential thermal analysis revealed that the mass loss curves during heating exhibit no abrupt transitions except at 133 and 778℃.Polymorphic changes in C3S and C2S begin at temperatures of 920℃ and above.Therefore, it was concluded that burning temperatures of 400 and 600℃ do not affect the mineral components of the binder.To evaluate the hydraulic hardening capacity and deformation behavior of the specimen, the results indicated that the behavior of the specimens was not affected by the firing of the binder at temperatures of 400 and 600℃.The results of this research revealed valuable insights into the effects of temperature, suggesting the potential use of concrete waste from building demolition exposed to high temperatures as a sustainable basic binder.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".