Your search resulted in 98 documents. Displaying 25 entries per page.
High-frequency monitoring of mass loss due to brown rot degradation of modified wood
2016 - IRG/WP 16-10862
Fungi growing in liquid culture undergoes three separate phases in which they i) adapt to the new environment, ii) grow unrestrictedly and exponentially, and iii) are inhibited to increase in number/mass due to lack of nutrients etc. Filamentous fungi have been shown to exhibit similar growth phases in a solid food substrate and have been modelled to grow in this way also in solid wood. In modifie...
R Ringman, A Pilgård, K Richter
Durability of a willow/plastic composite mat
2016 - IRG/WP 16-20592
Developing uses for wood wastes could enhance utilization of low value renewable materials while creating opportunities for rural development. Small diameter willow stems have little use in China, but they could be combined with high density polyethylene to create wood plastic composite mats for decorative applications. These mats could be used in exterior, above ground exposures, but would still ...
Li Yan, Haiyan Duan, Beizhan Quan, J Cappellazzi, J J Morrell
Distribution and penetration of the tung oil in wood studied by high-resolution magnetic resonance imaging
2016 - IRG/WP 16-20593
Water repellents as environment-friendly treatments are gaining their popularity as non-biocidal solutions for wood protection. One of the most important water repellents for wood besides waxes and organosilicon compounds are drying oils. Tung oil is one of the best performing oil. However, tung oil, similarly as other oils, does not penetrate deeply into wood, due to its high viscosity. In order...
M Žlahtič, U Mikac, I Serša, M Merela, M Humar
Fabrication and characterization of MicroPCMs filled wood-plastic composites: Effects of polyethylene glycol on melamine–formaldehyde shell material
2016 - IRG/WP 16-40728
Microencapsulated phase change materials (MicroPCMs) containing dodecanol were fabricated using melamine-formaldehyde (MF) or polyethylene glycol 200 modified melamine-formaldehyde (PMF) resin as the shell materials by in situ polymerization. Wood flour/high-density polyethylene (WF/HDPE) composites with MF shell MicroPCMs (MF-MicroPCMs) or PMF shell MicroPCMs (PMF-MicroPCMs) were prepared, respec...
Xi Guo, Jinzhen Cao
The influence of log soaking temperature and thermal modification on the properties of birch veneers
2016 - IRG/WP 16-40749
In veneer manufacture the logs are routinely soaked in heated water baths in order to soften the wood prior to peeling. The temperature of the water may vary greatly between batches; however, the influence of log soaking temperature on veneer properties has had little research attention. Uncontrolled moisture is known to cause problems in wood-based materials, while thermal modification offers a m...
S Källbom, K Laine, M S Moghaddam, A Rohumaa, K Segerholm, M Wålinder
Development of Wood Modification – High melting point wax and hot oil treatments
2016 - IRG/WP 16-40768
This study covers an introduction to the projects where new facilities were created for developing wood modification. In this new research environment it is possible to treat wood with versatile equipment. First modifications with this equipment are going to be done in high temperature and pressure using high melting point waxes and hot oils.
Earlier studies, tests and commercial products show...
H Turunen, L Linkosalmi, J Peura, O Paajanen
Moisture behaviour and biological durability of high performance flax fibre reinforced composites
2017 - IRG/WP 17-40803
For natural fibre composites in structural and load bearing applications long reinforcing fibres are required. Therefore, much research is performed on flax fibre reinforced composites to optimize them for high performance use. In most cases such research focuses on the mechanical properties, yet the assessment of moisture behaviour, dimensional stability and biological durability is an important ...
N Defoirdt, J Van den Bulcke, F Bensadoun, J Ivens, I Verpoest, J Van Acker
Durability of energy efficient wooden buildings: a building physical point of view
2017 - IRG/WP 17-40812
The drive for more energy efficient and sustainable buildings resulted in an increased popularity of wooden buildings, even in countries with a masonry tradition. Often guidelines and prescriptions then are copied from other countries. Different climatic boundary conditions and tradition of finishing, though, do require different moisture tolerance criteria. This is clearly the case for water vapo...
S Roels, J Langmans
Fipronil Concentrations in Soil after Vertical Termiticide Applications Using the “Termidor®H•P High Precision Injection System”
2017 - IRG/WP 17-20630
Termidor®H•P II High Precision Termiticide concentrations in sandy-loam and sandy-clay-loam building foundation soil were measured 1.0-hour after high-pressure vertical liquid injections into the soil using the Termidor®H•P High Precision Injection System. Cylindrical, vertical 30.5-cm-deep soil cores were extracted and separated into four 7.6-cm-long sequential partitions, and fipronil res...
B M Kard
Wood veneer with high flexible decorated with nanoparticles for highly efficient water treatment
2019 - IRG/WP 19-50347
Natural wood is mainly comprised of numerous long, partially aligned channels (lumens) as well as nanochannels. Wood with these quick and effective passages is suitable for a membrane/separation material. However, a suitable thickness range of wood along its growth direction is essential to effectively separate small molecular, and the wood membrane is too thick to clean easily. In this paper, woo...
S Chang, D Xu, G Liu, J Hu, X Li, Y Liu
Development of Wooden Fireproof Structures for Mid- and High-rise Buildings in Japan
2021 - IRG/WP 21-30757
When constructing a mid-to-high-rise building more than 4 stories in general in Japan, it is necessary to have a fireproof structure stipulated by the Building Standard Law. The performance required as a fireproof structure in Japan is generally stricter than in other countries, and it is required to be structurally sound after a fire even without fire extinguishing activities. In order to satisfy...
D Kamikawa, M Harada, H Matsunaga, R Takase, N Hattori, Keisuke Ando, M Miyabayashi
Evaluation of decay and energy properties from thermally modified biomasses during fungal deterioration by NIR-spectrometry
2021 - IRG/WP 21-40922
This study is focused on the prediction of fungal weight loss (WL) and high heating value (HHV) from raw and torrefied waste lignocellulosic feedstocks, according to their exposure duration to wood-destroying fungi, using near infrared spectroscopy (NIR) and chemometrics models.
Sugarcane bagasse, coffee husk, eucalyptus and pine shavings were torrefied at 290 °C in a screw reactor, during 5, 7...
B de Freitas Homem de Faria, P Santana Barbosa, J Valente Roque, A de Cassia Oliveira Carneiro, P Rousset, K Candelier, R F Teofilo
Biological assessment of bio-based phase change materials in wood for construction applications
2022 - IRG/WP 22-40935
Solid wood can serve multi-functionality for energy savings in buildings. The study reveals the results of bio-deterioration and degradation of solid Scots pine wood used to incorporate single or multicomponent fatty acid mixtures as bio-based phase change materials (BPCMs). The sapwood samples were impregnated with capric acid (CA), methyl palmitate (MP), lauryl alcohol (LA) and a mixture of coco...
S Palanti, A Temiz, G Köse Demirel, G Hekimoğlu, A Sari, M Nazari, J Gao, M Jebrane, T Schnabel, N Terziev
Joints design considerations in indoor high humidity conditions
2022 - IRG/WP 22-40950
In recent years, a number of cases of degradation by wood destroying fungi have been detected in covered timber structures such as pools, wineries, bathrooms, etc. – in fact, any building where indoor air may reach high humidity values during certain periods of time.
The origin of this kind of decay was not related to water leaks, but to the condensation of the water vapor over the steel connec...
A Lozano, D Lorenzo, M Alonso, F Álvarez, J E Martínez
Effects of preservative impregnations on wettability and surface free energy properties of Eucalyptus grandis wood
2023 - IRG/WP 23-40978
Wettability and surface free energy (SFE) are crucial parameters for evaluating the adhesion thermodynamics of solid surfaces. Hence, this study investigated the effects of copper azole (CA) and disodium octaborate tetrahydrate (DOT) preservative impregnations on Eucalyptus grandis wood wettability and SFE. Wettability was determined in terms of contact angles with polar (water) and non-polar (dii...
A A Alade, C B Wessels, H Stolze, H Militz
Starch modified with silanes – high hydrophobic surface treatment for wood protection
2023 - IRG/WP 23-40981
The great potential of silanes for starch modification and their utility as surface wood protection is still not sufficiently assessed. The work aimed to analyze the crosslinking process's effect on starch modification with silane and tested the hydrophobic properties of surface-treated wood. The starch treatment was modified with methyltrimethoxysilane or N-octyltriethoxysilane. SEM-EDX with a cr...
W Perdoch, M Bajstok, B Mazela, I Siemińska, B Peplińska
Evaluation of the effectiveness of soaking of high-temperature plywood in low-temperature oil-based wood
2023 - IRG/WP 23-40991
We conducted a preliminary investigation to determine if soaking high-temperature plywood in a low-temperature preservative solution could achieve deeper penetration of the preservative, even in plywood made with refractory wood species such as Japanese larch. Specimens cut from commercial plywood (Japanese larch) were stored at various temperatures before being soaked in the preservative solution...
T Miyauchi, S Isaji, H Shibui, N Furuta, J Miyazaki, H Matusnaga
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
Developing thermal-energy storage systems based on Kraft lignin-glyoxal and organic phase-change material modified wood
2024 - IRG/WP 24-30810
This study investigated the use of modified wood as a thermal-energy storage material through the integration of paraffin-based phase-change materials (PCMs). The objective was to evaluate the influence of Kraft lignin-glyoxal prepolymer on the properties of wood modified with PCMs. The implementation of the modified wood involved preparing PCM emulsions, synthesizing lignin-glyoxal prepolymer, an...
C-F Lin, O Karlsson, D Jones, D Sandberg
The non-energy utilization of low-quality wood from the invasive species Prunus serotina
2025 - IRG/WP 25-30814
Alien invasive species in Europe, such as Prunus serotina, can significantly impact ecosystem structure and function. This species provides low-quality timber, which is most often used for energy purposes in the form of biomass. In the era of policies focused on a circular economy, seeking methods to extend the life cycle of raw materials and wood products is necessary. For this purpose, the wood ...
W Perdoch, P Kołwzan
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
Biocomposites based on fungal mycelium and beech particles impregnated with BPCM (bio-phase change material) for thermal energy storage
2025 - IRG/WP 25-41034
The building sector is a major contributor to Europe's carbon emissions, and transition to a bio-based economy is essential for achieving long-term sustainability goals. The European Union has set ambitious targets for climate-neutral heating and cooling by 2050, which requires the widespread adoption of energy-efficient and environmentally friendly technologies. A key element in this transition i...
E Nigrone, F De Francesco, J Conti, M Jebrane, M Nazari, N Terziev, S Palanti
Recycling wood treated with copper-based preservatives to produce hard carbon materials for energy storage applications
2025 - IRG/WP 25-50401
In this study, we explored the possibility of recycling wood treated with copper-based preservatives to produce hard carbon materials for use in energy storage devices. We pyrolsed both untreated and copper-treated wood into hard carbon, conducted microstructural and physicochemical characterisation, prepared electrode materials, and evaluated their electrochemical performance in sodium-ion batter...
D Huo, J-P Bonnet, A Jamali