Use of Structural Dome Formwork Systems in Sustainable Transportation Applications
Bibliographic record
Abstract
Transportation agencies are actively seeking new and innovative solutions to build more sustainable infrastructure, while maintaining or improving economy and durability. A structural dome formwork system is one innovative product that is currently being evaluated for use in transportation applications. This product consists of interlocking, modular, dome-shaped units, made from recycled plastic, that serve as a permanent formwork for concrete floors, sidewalks and pavements. The resulting product is a concrete slab with a system of interconnected vault-like voids below the surface. This concept provides a number of environmental and economic benefits. One major benefit of the dome shaped system is the ability to provide structural carrying capacities equivalent to conventional slabs, but requires less concrete to do so (up to a 20% reduction in concrete consumption). A significant savings in raw materials can be achieved. The system has also many additional demonstrated benefits, including reduced reinforcing steel, granular base and hard fill requirements, protection of the concrete from excess moisture due the ventilated design, and protection of tree roots from damage in urban areas. This paper presents a number of Canadian case studies involving the use of the structural dome formwork system in transportation applications, including roadways, sidewalks, floor slabs and urban tree root protection. For each case study, details about the design, construction, and performance are provided. Performance results to date indicate that this technology has great promise as a concrete pavement technology and in various other transportation related applications. The economic and environmental benefits are diverse, and help agencies meet their sustainability goals, while providing a good return on investment.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 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".