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Durability of fast- and slow-grown Douglas fir in above ground exposures in Australia
2023 - IRG/WP 23-11009
Natural durability is a key property for untreated timber used outdoors and exposed to the weather. The natural durability of fast- and slow-grown Douglas fir heartwood was compared in an above-ground L-joint field test near Brisbane, Queensland, Australia. The L-joint test provides conditions that are favourable to decay. Fast-grown (regrowth) Douglas fir had ≤ 10 growth rings per 50 mm, while ...
L P Francis


Performance of treated Malaysian semantang bamboo (Gigantochloa scortechinii) - field and laboratory durability evaluation
2023 - IRG/WP 23-30788
Field performance of sematan bamboo, Gigantochloa scortechinii was evaluated under the Malaysian tropical climate, along with laboratory evaluation to white-rot fungi and mold. Starch was removed from the bamboo by submerging the bamboo in the river for 6-8 weeks, kiln-dried and cut to 300 mm (L) round bamboo and 25 mm (W) x 50 mm (L) stripe for the field and laboratory test respectively. Bamboo w...
S Lipeh, T Khadiran, Z Jalaludin, M K Anwar U


Laboratory evaluation of PA1b, an insecticidal protein extracted from pea seeds (Pisum sativum), as bait active ingredient against the subterranean termite Coptotermes gestroi (Blattodea: Rhinotermitidae) in tropical zones
2024 - IRG/WP 24-11038
Coptotermes gestroi (Wassman 1896) is one of the worst pests in tropic areas, economically. Two types of curative methods are used since decades to eliminate colonies that attack constructions: injection of biocidal treatment solutions on wood, walls and soil, and population control using baits. In application of the current regulations, the first technique can no longer be used in Europe, to lim...
J Vuillemin, D Messaoudi, P da Silva


Manufacturing of bamboo hybrids with high strength, superior fire retardancy, and dimensional stability
2024 - IRG/WP 24-30808
Bamboo, renowned for its rapid growth, high strength-to-weight ratio, and eco-friendly attributes, has found extensive use in decorative building materials and glue-laminated beams. However, the inherent challenges of dimensional instability and flammability in natural bamboo restrict its broad application. This research introduces a range of environmentally friendly techniques aimed at producing ...
W He, Rui Wang, W Li, G Hu, T Singh, Q Fu


Durability of Malaysian plybamboo to mold
2024 - IRG/WP 24-41014
Durability of 3-layer plybamboo fabricated from two Malaysian bamboo species, Gigantochloa levis (beting) and Gigantochloa scortechinii (semantan) using three different adhesives - urea formaldehyde (UF), melamine urea formaldehyde (MUF) and phenol resorcinal formaldehyde (PRF) was evaluated in this study. Samples were exposed to the mold, Aspergillus brasiliensis for 4-week following the ASTM D44...
S Lipeh, A Mustapha, A S Yusoh, M K A Uyup


Revealing the degradation process of Moso bamboo (Phyllostachys edulis) by different decay fungi
2025 - IRG/WP 25-11060
Moso Bamboo (Phyllostachys edulis) is the main bamboo species for engineering; however, it is highly susceptible to various fungi during use. In this study, four prevalent decay fungi, including two brown rot fungi and two white-rot fungi, were used as the test fungi to investigate the changes in structure and chemical composition of Moso bamboo samples at different incubation times in order to be...
J Xue, D Cui, M Zhou, J Cao


Transformation of bamboo: From multiscale fibers to robust and degradable cellulose-based materials for plastic substitution
2025 - IRG/WP 25-41032
Bamboo is an ideal candidate to replace traditional plastics, reduce environmental pollution, and promote harmony between nature and humanity owing to its rapid growth and renewability. However, achieving arbitrary shape-shifting of bamboo while retaining its high strength and degradability remains challenging. This study used multiscale interface engineering to transform bamboo into a robust, bio...
J Hu, Y Zhang, Y He, Z Su, W Lao, S Zhang, Y Yu, W Yu, Y Huang


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