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Decay resistance of laminated veneer lumbers from European oaks.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Reinprecht, L. Svoradová, M. Réh, Roman Marchal, Rémi Charrier, Bruno |
| Copyright Year | 2010 |
| Abstract | Natural durability of oaks depends mainly on the concentration of ellagotannins and some other polyphenols. Durability of oak-composite products (plywood, particleboard, laminated veneer lumber, etc.) is influenced also by the characteristics of wooden particles, e.g. their dimensions, hydrothermal pre-treatments, portion and localization of sapwood and heartwood particles in the composite structure, further by the applied glues, waxes and other additives, and by the pressing processes (temperature, time, pressure, etc.). In this work, decay resistance of the hydrothermal treated oaks and the Laminated Veneer Lumbers (LVL-s) prepared under various experimental conditions from European oaks Quercus pedunculata and Quercus sessiliflora was analysed. Mycological tests, by modified standard EN 113 using wood-destroying fungi Coniophora puteana and Trametes versicolor, shoved that the decay resistance of massive oaks and LVL-s was not influenced by the type of hydrothermal treatments or by the oak species. On the other hand, resistance of LVL-s against rot was significantly influenced by the zone of oak wood (poor from sapwood, better from medium heartwood, and good from young or old heartwood), respectively individually also by the veneer’s thickness (1, 2 or 3 mm) and the type of glue (melamine-urea-formaldehyde, phenolresorcinol-formaldehyde, polyurethane or PRF-tannin). |
| Starting Page | 79 |
| Ending Page | 90 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| Volume Number | 55 |
| Alternate Webpage(s) | http://www.woodresearch.sk/wr/201004/08.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
