Your search resulted in 156 documents. Displaying 25 entries per page.
The influence of chemical and thermal modification on homogeneity between sapwood, heartwood, and transition wood of short rotation teak
2023 - IRG/WP 23-40961
Short rotation teak wood has low quality especially in durability. Heartwood presents sufficient natural durability and poor impregnability; meanwhile, most sapwood requires special treatment to increase its durability. The objective of this work was to investigate the effect of thermal or chemical treatment on homogenization between sapwood, heartwood, and transition wood for some selected proper...
R Martha, B George, W Darmawan, P Gerardin
Gleditsia triacanthos tannins for wood coatings
2023 - IRG/WP 23-40995
When used outdoors or in high humidity interiors, wood highly is susceptible to decay by biotic and abiotic agents. Applying coating systems that contain compounds able to control decay is a way to increase the useful life of the wood. Gleditsia triachantos is regarded as a plague in many countries due to its resistance to extreme environmental conditions and its displacement of native forests. In...
C M Ibañez, E Fernandez
Do naturally sequestered biocidal metals contribute to the marine borer resistance of turpentine?
2024 - IRG/WP 24-11036
Turpentine wood is renowned for its resistance to attack by molluscan marine borers. This resistance is thought to be due to its high silica content, and possibly the presence of other, as yet unknown, compounds. Silica in turpentine wood is present as particles in rays, but in many plant species silica also occurs in cell walls. We hypothesized that Si is present in cell walls of turpentine, but ...
P D Evans, H Matsunaga, D Feng, M Turner, C Kewish
Potential of heartwood extracts as wood preservatives combined with linseed oil in 8-year above-ground and in-ground field trials
2024 - IRG/WP 24-20719
The current study assessed the efficacy of heartwood extracts from Tectona grandis, Dalbergia sissoo, Cedrus deodara, and Pinus roxburghii, combined with linseed oil, as protectants for two non-durable wood species against termites and decay fungi. Stakes measuring 45.7 × 1.9 × 1.9 cm and blocks measuring 12.5 × 3.75 × 2.5 cm of the sapwood of southern pine (Pinus sp.) and cottonwood (Populus ...
M E Mankowski, G T Kirker, B Hassan
Evaluation of the water exclusion ability and inherent bioactivity of heartwood against decay in Japanese and European wood species via above-ground exposure and water absorption tests
2024 - IRG/WP 24-40998
The natural durability of wood has been thought to mainly depend on bioactive extractives and the water exclusion ability. To clarify the contribution of each factor to wood durability, above-ground exposure tests were conducted on Japanese and European wood species. A double-layer test was carried out using heartwood specimens of four wood species, i.e., Japanese cedar, Japanese cypress, Scots pi...
T Osawa, R Noda, K Yamamoto
Leaching and chemical redistribution of CCA components in refractory heartwood of E. nitens
2024 - IRG/WP 24-41011
Chromated Copper Arsenate (CCA) is a wood preservative widely used to protect against fungal and insect attack. The fixation mechanism of CCA involves complex chemical reactions, including the reduction of chromium (VI) to chromium (III) and the formation of insoluble complexes. Despite fixation efforts, a portion of CCA components tends to leach from treated wood, influenced by factors like wood ...
J R Vargas, L Yermán, K C Wood, T Singh