Bibliographic record
Abstract
The Ministry of Transportation Ontario (MTO) continues to consider the reuse of existing piles to achieve traffic mobility, economic, sustainability and environmental advantages. Five structures at four sites along the Hwy 417 located in Ottawa, Ontario have been selected for bridge replacement utilizing rapid bridge replacement (RBR) techniques. The plan is to rehabilitate the abutments and to salvage the existing deep foundation elements (where present). The bridges were constructed between 1960 and 1968 and have a similar 2-span configuration, supported on perched abutments and a central pier. The reinforced concrete abutments are founded on steel H piles at all sites. The piers are founded on spread footing shallow foundations at all sites with exception of the Richmond Road structures, where the NBL and SBL structures are supported on steel H piles. Corrosivity testing (including determination of soil resistivity, chloride content, and pH) was performed and reporting completed. A supplemental in-situ investigation was conducted to expose the piles at two sites (Richmond Rd and Woodroffe Ave). Visual and ultrasonic testing of the exposed steel piles were carried out to determine the nominal thickness and damage to the piles over time due to corrosion. In addition to the testing of the piles, additional soil samples were retrieved for chemical analysis to determine the corrosivity of the soil at the site. This paper presents the results of the corrosion assessment and pile thickness loss. The paper also assesses the corrosion rate and predicted service life. The study is demonstrative of the MTO’s commitment to assess new technologies and applications that support Ministry initiatives, decarbonization, and operational needs and specifically to encourage the reuse of existing foundations.
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.
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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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".