Bibliographic record
Abstract
Because of its susceptibility to self-desiccation, high-performence concrete requires additional curing: generally a 7-day wet curing period is specified which is not an easy task to perform, especially in the field. The purpose of this study was to determine whether the 7 days' wet curing required by the Ministry of Transportation of Ontario for all high-performance concrete structures is necessary to ensure optimum durability. Ordinary Portland cement concrete and two high-performance concretes (one with slag and one with fly ash) were tested. The concrete specimens were cast in a heated enclosure and covered with wet burlap and plastic. They were demoulded after 24 h. Thereafter, one-third of the specimens were wet cured for an additional 24 h, one-third for an additional 2 days and the final third for an additional 6 days; giving total wet curing periods of 2, 3 and 7 days respectively. After 14 days, the enclosure was dismantled and the specimens were exposed to the outdoor ambient conditions and covered with de-icing salts during the winter months. None of the data obtained over the subsequent 2 years for the internal shrinkage strain, the temperature or moisture content, shows any consistent trend with curing period.
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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 | 0.001 |
| 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".