Microstructure and Hydration Mechanism of Autoclaved Aerated Concrete from Fly Ash
Bibliographic record
Abstract
Autoclaved aerated concrete(AAC) with excellent mechanical properties were prepared by the grade Ⅱ fly ash (FA) as siliceous materials, which was supported by the thermal power plant.The composition, morphology and thermal properties of the hydration products with different stages of AAC were detected by using X-Ray diffraction (XRD), scanning electron microscope (SEM), flourier transform-infrared spectroscopy (FT-IR), and thermogravimetric/differential scanning calorimeter (TG-DSC).Results shows that the main hydration products including ettringite (AFt), low crystallinity of C-S-H gels and Ca(OH) 2 were generated in the hardening body.After heat preservation 0 hour, the new hydration products tobermorite were detected.After heat preservation 8 houra, the major hydrated products were tobermorite and C-S-H gels in the final AAC samples.XRD diffraction peaks of the original mineral composition in FA were reduced, which indicated that the mineral composition of FA was decomposed, and the reaction between active components of SiO 2 , Al 2 O 3 , and Ca(OH) 2 caused the formation of tobermorite under conditions of high temperature and pressure and hot alkaline activation.
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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".