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Securing Flame Retardancy in Wood: Durability After Artificial and Natural Weathering Test
2025 - IRG/WP 25-20738
The outdoor use of wood is often limited by challenges such as dimensional instability, vulnerability to fungal decay, and high flammability. Traditional flame retardant treatments improve fire resistance but suffer from significant leaching under environmental exposure, reducing their long-term effectiveness. This study introduces an innovative solution by integrating flame retardants with DMDHEU...
M Wu, L Martin, H Militz


Potential co-valorization of pyrolysis tars from five wood species form Tunisia as wood preservatives bases: Chemical compositions, antifungal and anti-termite activities
2025 - IRG/WP 25-20739
The pyrolysis of five Tunisian wood species (Ceratonia siliqua, Eucalyptus camaldulensis, Eucalyptus maidenii, Pinus pinea, and Quercus canariensis) was carried out in a custom-designed carbonisation reactor developed at the INRGREF's Wood Technology Section (Tunis, Tunisia). This process aimed to produce both char and pyrolysis by-products, particularly pyrolysis oils. The experiments were conduc...
M T Elaieb, J Valette, E Kiény, L Pignolet, S Ghariani, K Candelier


NTR classified preservative-treated laminated wood
2025 - IRG/WP 25-20750
NTR is a trusted quality labelling system used for the classification and quality control of wood products that have been treated with preservatives or modified. These labels are issued by the Nordic Wood Preservation Council (NWPC) and in recent years, producers of glued laminated timber as well as building material suppliers have shown increasing interest in NTR classification for glued laminate...
J Jermer, F Westin, R Digaitis


Enhanced Termite Resistance of Low Durability Fast Growing Teak Wood by Non-Biocide Treatments Based on Chemical and Thermal Modification
2025 - IRG/WP 25-30818
Short rotation teak as a fast-growing tree can be considered as a renewable material resource for the future green economy. However, short rotation teak wood is susceptible to biodeterioration, particularly to termite attack. The objective of this work was to investigate the effect of chemical and thermal treatment on resistance of sapwood, transition wood, and heartwood of short rotation teak aga...
R Martha, K Candelier, M-F Thévenon, B George, I S Rahayu, W Darmawan, P Gérardin


Enhancing strength, fire and biological resistance of wood through structural and chemical modification
2025 - IRG/WP 25-30831
Wood, a renewable and versatile biopolymer, has been a fundamental material to construct traditional and advanced composites for building construction, furniture, transparent composites, and various other applications. Despite its many advantages, including its aesthetic appeal, workability, and relatively low cost, wood possesses inherent limitations such as susceptibility to biological, flame an...
R Abouzeid, M S Koo, Q Wu


Investigation of Pressure-Treated Foundations with Wood Preservative and Termite Control in Existing Wooden Houses in Japan
2025 - IRG/WP 25-50402
Japan has extremely limited natural resources. Therefore, it is necessary to build a circular economy in which waste and other recyclable resources are effectively utilized in order to achieve sustainable development. This study aims to investigate the degradation of existing wooden houses and to contribute to the reuse of existing houses and the reuse of building materials during demolition. We i...
K Usami, T Kawada, H Ishiyama


Physical and chemical characterization of post-consumer wood chips for recycling
2025 - IRG/WP 25-50414
Post-consumer wood (PCW) is a valuable resource that can partially substitute virgin wood in material applications. This communication paper presents key findings from a study that analysed PCW collected from three recycling facilities in southeastern Norway over eight months. A total of 20 mixed and 4 pre-sorted PCW samples were evaluated regarding their material composition, particle geometry, a...
M Altgen, K Bringdal Gedde, L Ross, E Larnøy


Valorisation of bark extractives for wood and plant protection: the Extrabark project
2025 - IRG/WP 25-50415
The Extrabark project is an Interreg collaborative project between Lorraine in France, Wallonia in Belgium, the Saarland in Germany and Luxembourg. The objectives of the project are to develop a complete value chain of valorisation of bark generated by wood industry via the utilization of extracts or molecules for the protection of plants and wood material as a bio-sourced alternative to petrochem...
P Gérardin, C Gérardin-Charbonnier, S Dumarçay, F Obounou Akong, E Fredon, R Martha, J V Dorini Falavinha, W Donck, Z Nys, A Lepretre, L Taguimjeu, M-L Fauconnier, J Renaut, K Sergeant, S Saker, E Strilin, J Tchoumtchoua, M C Detroz, G Beauchamp


Probing nanoscale protection mechanisms with x-rays and neutrons
2025 - IRG/WP 25-11083
While it is known that exposing wood to high levels of moisture, fire, or decay agents such as fungi can be detrimental for its performance, what is often missing in literature is a holistic understanding of how wood nanostructure changes due to these exposures. This is of particular interest since treatments that are meant to impart resistance can alter these length scales and/or modify their hyg...
N Z Plaza, K M Ohno, J E Jakes, J B O’Sullivan, L Yang


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