Ultrasonic Evaluation of High-Early Strength ConcreteSubjected to Isothermal Curing
Bibliographic record
Abstract
High early-strength concrete are commonly used for reinforced bulk/mass concrete foundations of structures.Based on the temperature measurements for an actual project, it was found out that even after implementing the necessary countermeasures, the recorded temperatures exceeded the threshold values recommended by the American Concrete Institute specifications.Thus, these mass concrete are usually subjected to isothermal curing.The study aims to evaluate high-early strength concrete subjected isothermal curing using linear and nonlinear ultrasonics.These ultrasonic evaluation techniques include ultrasonic pulse velocity test, scaling subtraction method, and harmonic generation method.Ultrasonic tests were conducted to concrete specimens before and after subjecting them to compression loading using the universal testing machine.Comparison between the results of normally cured specimens and isothermally cured specimens were made.Test results showed that the damages in the isothermally cured specimens were more apparent than that in the normally cured specimens.Therefore, it was proven that control measures are required to prevent or reduce the progression of damage due to isothermal curing.
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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".