Implementation of Ultra-High Performance Concrete (UHPC) Decked I-Beam in Ontario
Bibliographic record
Abstract
The structural engineering firm, e.construct (Omaha, Nebraska, United States), has designed an Ultra-High Performance Concrete (UHPC) decked I-beam to be installed at a new privately-owned vehicular bridge in Shanty Bay, Ontario, Canada for demonstration and evaluation. Through a technology transfer joint venture agreement between FACCA Incorporated (Ruscom, Ontario, Canada) and Dura Technology (Ipoh, Malaysia), the Dura UHPC is batched using local North American raw materials. This paper will focus on development of the UHPC decked I-beam and adjustments that have come about during the on-going implementation process for this Design-Build project. The paper will also list items needing further investigation. One of the biggest challenges faced thus far has been the creation of formwork that will allow for the top flange waffle deck to be cast simultaneously with the rest of the beam without creation of any cold joints. Economy in utilizing the relatively expensive UHPC and desire to reduce the number of ribs in the top flange resulted in an optimized spacing of 500 mm (20 in.). To keep the rib width to a minimum, high strength corrosion resistant steel, ChrōmX, was introduced. Prototype pieces and small specimens are currently being cast for element testing.
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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 | 0.001 | 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 | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 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 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".