Características petrográficas de pastas de cemento y mezclas de mortero y su relación con los diferentes tipos de curado
Bibliographic record
Abstract
Se analizaron las propiedades mecánicas de 18 cubos de pastas de cemento Portland y 18 cubos de mortero con arena de Ottawa; confirmando experimentalmente que la resistencia a la compresión es mayor bajo curado húmedo que bajo curado ambiente. Desde el punto de vista petrográfico, se analizaron 24 secciones delgadas de pastas de cemento y 24 secciones delgadas de morteros, de muestras curadas por inmersión y al aire durante 7 y 28 días, en una cámara de curado. Las características petrográficas de los minerales de cemento y productos de hidratación estudiados, permitieron determinar que bajo curado húmedo se forma más gel C-S-H y cristales de portlandita más gruesos que bajo curado ambiente, es decir, hay mayor grado de hidratación en las muestras, esto coincide con los resultados obtenidos en los ensayos de resistencia a la compresión. Se determinó que los valores de relación A/C utilizados, no son relevantes para la variación del contenido y del tamaño de las fases minerales.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".