Relationship between coulomb and migration coefficient of chloride ions for concrete in a steady-state chloride migration test
Why this work is in the frame
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Bibliographic record
Abstract
A steady-state chloride migration test with a constant electrical potential drop of 15 V was conducted with a saturated 100 mm diameter × 50 mm long concrete specimen. The migration coefficient of chloride ions for concrete was calculated using the constant flux on the basis of the Nernst–Planck equation. Electrical current was simultaneously monitored throughout the entire period of the migration test. Initial and final coulomb values were separately defined and calculated using the current recorded in non-steady-state and subsequently in steady-state conditions with respect to chloride migration, respectively. A unique relationship existed between the initial coulomb and the migration coefficient depending on the binders of the concrete mixes, that is ordinary Portland cement (OPC) alone, OPC plus fly ash or OPC plus silica fume. However, it appeared that the final coulomb related linearly to the migration coefficient, irrespective of the water:cement ratios, binders and curing periods.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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) | 0.000 | 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 it