Comparing Short-Term Performance of Corrugated HDPE Pipe Made with or without Recycled Resins for Transportation Infrastructure Applications
Bibliographic record
Abstract
In recent years, corrugated high-density polyethylene (HDPE) pipes manufactured from recycled resins have been on the rise for infrastructure sectors as a result of their numerous advantages. Compared to HDPE pipes made with virgin resins, these recycled pipes help solve the problem of plastic-waste management and the environmental impacts of waste. In addition, using recycled materials makes HDPE pipe more sustainable and cost effective. One question stands out: Will HDPE pipes made with recycled resins have the same performance and durability as virgin pipes under the impact of thermal stress during the burial process, environmental variations, and traffic load? This issue needs to be clarified because the demand for recycled pipes is increasing. The aim of this paper is to improve the knowledge to compare the short-term performance of these two types of pipes. The specimens came from four different North American manufacturers with their own production processes. This study provides more detailed data on physicochemical, mechanical, and thermal properties of HDPE pipes. These properties were tested on laboratory equipment according to ASTM standards. The test results can be used to estimate some aspects of the long-term characteristics of HDPE pipes.
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How this classification was reachedexpand
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) | 0.001 | 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) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".