The Effect of Acid Rain on Magnesium Hydroxide Contained in Cement-Lime Mortar
Why this work is in the frame
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Bibliographic record
Abstract
The effect of acid rain on mortar durability is not well understood. In particular, little work has been done on the reaction of magnesium hydroxide in dolomitic Type S hydrated lime with sulfuric acid compounds. In this study, this reaction is investigated using two different exposure situations, each involving distilled water and sulfuric acid (4.5 pH) as leachants. In the first situation, the leachability of the Type S hydrated lime is examined through packed-bed column testing. In the second situation, hardened mortar samples were placed in both distilled water and sulfuric acid (4.5 pH) solution for one week. Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP) was used to determine the magnesium content of the raw materials, hardened mortars and leachate. Magnesium levels of the leachate samples were consistently low and did not appear to be affected significantly by the presence of sulfuric acid.
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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 | 0.001 | 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 0.001 |
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