Evaluation of the durability of the exterior siding products made with trembling aspen lumber in terms of colour change
Bibliographic record
Abstract
Trembling aspen (Populus tremuloides) is a fast-growing and widely distributed species in Canada, but its uses in non-structural wood products are limited. This study was aimed at evaluating the feasibility of using aspen lumber for producing wood siding products and their durability in terms of colour change (ΔE). Both short-term natural exposure and artificial accelerated weathering tests were conducted on the aspen wood sidings produced and pressure-treated on a production line. The spruce-pine-fir (S-P-F) sidings were used as control. It was found that (1) both short-term natural and artificial accelerated weathering tests resulted in an increase in average ΔE of the siding specimens, exhibiting surface greying and darkening. (2) Finished trembling aspen siding specimens consistently exhibited greater colour stability than finished S-P-F ones. (3) Both finished trembling aspen and S-P-F siding specimens had smaller ΔE values than unfinished ones, suggesting the finishing employed in this study effectively protected surface colour.
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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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".