PERFORMANCE OF LAB-PRODUCED HVFA-BLENDED CEMENTS IN CONCRETE
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The production of portland cement contributes significantly to carbon dioxide emissions into the atmosphere. Technologies are being developed to reduce the production of portland cement clinker in rotary kilns while maintaining the target production of cement to meet the demand of the construction industry. The Canadian Centre for Mineral and Energy Technology (CANMET) developed a high-volume fly ash (HVFA) concrete in which 55 to 60% of the portland cement is replaced by a low-calcium fly ash, a by-product of thermal power plants. To resolve manufacturing problems, a blended cement was developed. This cement incorporated high volumes of American Society for Testing and Materials (ASTM) Class F fly ash. The blended cement is made by intergrinding approximately 55% of a low-calcium fly ash and 45% of ASTM Type I or Type III cement clinker together with small amounts of gypsum and a dry high-range water-reducing admixture (HRWRA). This article presents the development of the HVFA-blended cements at CANMET and discusses their performance in concrete. The results of various lab tests studying the chemical and physical properties of the cements are presented.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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 | 0.000 | 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 it