Effect of brine on long-term performance of four HDPE geomembranes
Bibliographic record
Abstract
The performance of four 1.5 mm thick high-density polyethylene (HDPE) geomembranes (GMBs) (denoted MxA-15, MxC-15, MyE-15, and MyEW-15) immersed in a brine solution with 200,000 ppm total dissolved solids and a pH = 8.7 is presented for 4 years. Accelerated ageing experiments were conducted at 40, 65, 75, and 85°C for 4 years. It is shown that neither the Std-OIT nor HP-OIT had reached a residual value before physical degradation was observed, suggesting that the traditional three-stage concept for degradation did not apply when based on the values obtained (as is usual) through the entire GMB thickness. The time to nominal failure, based on a reduction of 50% of the initial value, was less than 4 years for all GMBs at temperatures ≥ 65°C. However, using the time at which the stress crack resistance (SCR), obtained from the single point notched constant tensile load (SP-NCTL) test, decreased to 50% of the minimum requirements of GRI-GM13, the times to nominal failure are greater than 20 years for at T ≤ 65°C for MyE-15.
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 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 | 0.001 | 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 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".