Your search resulted in 3111 documents. Displaying 25 entries per page.
Improvement of short rotation teak wood properties through thermal modification
2018 - IRG/WP 18-40842
Teak (Tectona grandis L.f) is one of the most popular tropical timber species. Nowadays, the source of long rotation teak is limited in the availability. Many wood processing industries use short rotation teak, which has lower quality especially in durability and dimensional stability. Heat treatment is an eco-friendly method improving dimensional stability and durability of wood. The objectives o...
L A Pratiwi, I W Darmawan, B George, A Merlin, C Gérardin, S Dumarçay, T Priadi, P Gérardin
Wood-Plastic Composites preservation against fire: Nanofillers as fire retardant alternative
2018 - IRG/WP 18-40843
The purpose of this study is to improve fire resistance of Wood-Plastic Composites (WPCs) by adding inorganic nanofillers. Indeed, the main components of WPC, namely wood and polymer are both flammable materials despite the fact that WPCs are used in the field of construction. The effect of nanofillers on fire retardancy of Wood-High density polyethylene Composites was studied with three nanofille...
D Ben Ammar, A Koubaa, S Migneault, H Bouafif
Performance of wood exterior structures above ground in Spain built with softwood species. The situation case of a shelter bridge
2018 - IRG/WP 18-40844
Across Europe is very common to find wood exterior structures build in sawn and glue-laminated wood. Most of these exterior wood structures use softwood wood species such as: fir, spruce, larch and pine. In Spain exterior wood structures, became more and more popular since nineties, when sawn and glue-laminated wood were utilized for building exterior wood structures in overall Spain. This paper s...
D Lorenzo, M Touza, J Fernández-Golfín, A Lozano, J Benito
Selection of heat flux value for wood fire retardants testing using MLC
2018 - IRG/WP 18-40846
One of more crucial elements of investigating treated wood combustion properties with the use of a cone calorimeter is a proper selection of heat flux (HF). The HF level is directly reflected in time to ignition and a thermal degradation degree. The ignition of raw wood or of wood ineffectively protected against fire occurs at a low HF level, i.e. 10-20 kW/m2. By contrast, the ignition of wood whi...
B Mazela, W Perdoch, W Grześkowiak, A Batista
Developments within COST Action FP1303 related to the modification of wood
2018 - IRG/WP 18-40847
COST Action FP 1303 (Performance of bio-based building materials) was established in 2013 with the main aim to improve the knowledge on the performance of bio-based materials used as building products and the assessment of factors influencing these, with the aim of increasing their service life. This Action has helped in understanding the interlinked relationships between durability, product aesth...
D Jones
Termite species associated with processed wood in South America
2018 - IRG/WP 18-10934
Termites as an eusocial insect group play an important role in the decomposition of organic matter of cellulose origin and in the modification and quality of soils. Some species are xylophagous, and therefore are considered an important urban pest due to their ability to attack not only wooden building structures but also synthetic materials such as PVC, polyethylene or polyurethane, causing great...
C Jorge, M Ibáñez
Influence of different triazoles as co-biocides in wood preservatives on efficacy and the environmental impact
2018 - IRG/WP 18-50333
In this study we investigated the efficacy and impact on the environment of different co-biocide triazoles in wood preservatives. Four different formulations (all containing 9.5% Copper) contained individual and combinations of cyproconazole, tebuconazole, propiconazole as co-biocides. Four formulations were tested according to EN 113 and EN 84 (ageing) to determine the brv for each formulation. T...
M Klamer, T Jensen, S Bang-Achton, E Morsing
Long service life or cascading? The environmental impact of maintenance of wood-based materials for building envelope and their recycling options
2018 - IRG/WP 18-50336
A major restraint in choosing bio-based materials (i.e. wood-based) for external use, is the lack of confidence that architects, designers and customers have toward these materials. In particular, the limit state of bio-based materials, which defines the frequency of maintenance operations, might be reached earlier for wood than for other materials (i.e. concrete). On the other hand, resource and ...
M Petrillo, J Sandak, P Grossi, A Kutnar, A
Conversion by insects – alternative method for wood waste up-cycling
2018 - IRG/WP 18-50337
Building industry is a major consumer of materials and waste generator in Europe. The bio-based building materials are considered as interesting alternative in modern building sector due to their low environmental impact. However, in order to increase confidence for bio-based materials application, they should present satisfying performance during service life allowing at the same time their casca...
A Sandak, J Sandak, M Kutnik, I Paulmier, C Brunet, M Petrillo, P Grossi
Declaring life cycle inventory of toxicity related emissions in environmental product declarations of preservative treated wood products
2018 - IRG/WP 18-50339
Life cycle assessment (LCA) including impacts on toxicity for preservative treated wood has been shown to have large uncertainties. With the growing demand for verified LCA in environmental product declarations (EPD), the need for reliable data is crucial for realistic assessment of wood products. Uncertainty is caused by several issues such as service life prediction, leaching rates and calculati...
L G F Tellnes, C Askham, P-O Flæte, M Klamer
Environmental protection and long term in-service sustainability of preserved wooden poles is secured by non-toxic barrier protection system – History and case studies in South Africa
2018 - IRG/WP 18-50340
Non-toxic flexible sheeting systems have been developed to encapsulate the ground contact regions of preserved wooden poles and prevent their premature failure in South Africa since 1992 but the technology also has a long history of resistance by individuals with vested interests in the built-in redundancies of such poles. The concept has, however, been simultaneously validated by many independent...
A A W Baecker
Preserved Wood in the Story of Sustainable Forestry
2018 - IRG/WP 18-50344
Sustainable forestry, at its simplest, is about growing trees. The full story, though, is much more complex. An important chapter of that story is the role that preserved wood plays in ensuring sustainability. Too often, this part of the sustainability story is rarely mentioned.
It is time for the preserved wood industry to deliver a unified message of our critical role in sustainability. By res...
D Brookes
Biodiversity of wood-decaying fungi in French Guiana sequences of the small subunit (SSU) of ribosomal (r) DNA and the two primer pairs SR6/SR10R and SR7/SR1R
2019 - IRG/WP 19-10936
Fungi from tropical regions are currently under-represented in the classification system. Indeed, difficult access to tropical forests makes it complicated to study fungus species in such environments, unlike in European zones where fungal diversity and taxonomy are much better known. The purposes of this work were: a) to enhance classification by integrating new data that would bring out the impo...
C Zaremski, A Ducousso-Detrez, N Amusant, A Zaremski
An overview of The Wood Preservation Industry in South Africa
2018 - IRG/WP 18-50343
South Africa boasts a total land area of 1,22 million km2 or 122 million hectares of which approximately 1% is cultivated with commercial plantation forests. The species planted are exotic species i.e. pine, eucalyptus and wattle. The commercial forests supply raw material to a diverse forestry sector and industries including Paper and Pulp, Sawmilling, Mining Timber, Poles, Charcoal, Wood chemic...
Bruce Breedt
Difference of wood decay manner between brown-rot species
2019 - IRG/WP 19-10938
Wood blocks (Cryptomeria japonica) which were decayed by a Polyporales white-rot fungus (Trametes versicolor) and brown-rot fungi (Fomitopsis palustris, F. pinicola, and Wolfiporia cocos), respectively, were analyzed by X-ray diffraction and infrared spectroscopic methods followed by multivariate analysis. In the analyses, the differences in the cellulose crystallinities and infrared spectral patt...
R Kondo, Yo Horikawa, S Nakaba, K Ando, M Yoshida
Identifying the fungal community on western redcedar (Thuja plicata) wood in field tests above and in ground contact exposure: preliminary results
2019 - IRG/WP 19-10939
Western redcedar (Thuja plicata) is a high value species in the Canadian forest industry due in large part to the natural durability of its heartwood. Western redcedar heartwood contains extractives that are inhibitory to the growth of many fungi responsible for decay. In order to gain insights into which extractives are important in long term durability, and which fungi are important to decay of ...
A Dale, S Kus, R Stirling
Decay and water resistance of Siberian and European larch wood
2019 - IRG/WP 19-10941
The occurrence of larch wood is rather frequent in civil engineering. Namely, in building façades, terraces and balcony fences. In Slovenia and other central European countries, the use of the Siberian larch is especially popular. In this research, the durability against decay fungi in laboratory conditions and water exclusion ability of plantation-grown and naturally grown Siberian larch (Larix ...
B Lesar, D Krzisnik, M Humar
Natural durability of four Tunisian Eucalyptus wood species and their respective compositions in extractives
2019 - IRG/WP 19-10942
In the 50’s, Tunisia government introduced more than 11 Eucalyptus wood species. Eucalyptus species were planted in Tunisia in different arboreta throughout the country for close observation and adaptation to climate and soil. These fast-growing wood species were mainly used as fire wood, for the production of mine wood and to fight against the erosion. These tree species were adapted themselve...
S Ben Ayed, M T Elaieb, S Dumarçay, B De Freitas Homen De Faria, M-F Thévenon, P Gerardin, K Candelier
Determining the natural durability on xylarium samples: mini-block test, wood powder and chemical profiling
2019 - IRG/WP 19-10944
Xylaria, or wood collections, can be considered sleeping beauties in terms of wood technological and biological output. In this study we focus on determining the natural durability of xylarium specimens from the Federal Xylarium in the Royal Museum for Central Africa. The Federal Xylarium contains over 80,000 specimens, covering more than 13,000 species, mainly from Central Africa. These specimens...
V Deklerck, L De Ligne, J Van den Bulcke, E Espinoza, H Beeckman, J Van Acker
Coula edulis baill an unknown wood species as an alternative to the main durable wood species used in Gabon
2019 - IRG/WP 19-10945
The Congo Basin hosts an exceptional biodiversity of trees, flora and fauna. However, the immense natural heritage of the forests in this area is increasingly threatened by many anthropogenic factors, due to selective exploitation of certain wood species. In Gabon, whose ecosystem is representative of this area, the forest represents nearly 80% of the national territory. Only a minority of wood sp...
C S A Bopenga Bopenga, S Dumarçay, P Edou Engonga, P Gerardin
From fungal detoxification systems to wood durability in neotropical forests
2019 - IRG/WP 19-10946
White-rot fungi are able to mineralize all the wood components due in particular to an efficient detoxification system. We hypothesised that components of this detoxification systems, glutathione transferases, could be used as tools to explore the natural durability of neotropical wood species. Analysis of the interactions between six glutathione transferases of Trametes versicolor and extracts of...
T Perrot, G Salzet, N Amusant, J Duchene, E Gelhaye
Green Coloration of Wood in the Forest and Laboratory by Chlorociboria spp. – Applications for Furniture
2019 - IRG/WP 19-10947
Discoloration of wood caused by living saprophytic fungi is commonly found on lumber. These fungi do not destroy the integrity of wood, but the discolorations they cause are often considered undesirable. In Tunbrigde Wells (Great Britain), seldomly found green colored wood, usually considered commercially irrelevant, was valued for use in restoration of wood inlay artwork.
The aim of this researc...
S Krause, W Unger, P Heydeck
Effectiveness of Gleditsia triacanthos heartwood extractives as wood protector
2019 - IRG/WP 19-10950
In Uruguay, Gleditsia triacanthos (known as honey locust) is an exotic tree species categorized as invasive; it produces severe ecological impact as it displaces native species, causing changes in the structure of the native forest community. Being extremely difficult to control, it is widely distributed through Uruguay and neighbouring countries. However, one way to mitigate its negative impact i...
C M Ibanez, C Mantero, P Raimonda, X Pintos, E Pereira
Diversity of wood decay fungi isolated from ground-contact wood stakes in Korea
2019 - IRG/WP 19-10952
This study was conducted to investigate wood decay fungi from 5 different ground-contact wood stakes in Korea. A total of 73 basidiomycetes were isolated and identified into 20 genera and 22 species by using molecular method. Among all fungi, only 6 species were brown-rot fungi and the others were white-rot fungi. Pinus densiflora and Quercus variabilis showed high fungal diversity and isolation f...
S-M Yoon, M-J Kim, W-J Hwang, Y-S Choi, D-W Son
Visualization of Feeding Process of Larvae of the Wood-boring Beetles Using X-ray Computer Tomography
2019 - IRG/WP 19-10953
X-ray computer tomography (CT) was applied to observe the movement of the larvae of the wood-boring beetles Lyctus brunneus, Lyctus africanus, and Heterobostrychus aequalis inside the infested wood specimens. The larvae bred with artificial diet were inserted into the hole of wood specimens of rubber wood Hevea spp. or Japanese oak Quercus crispula. The wood specimens with larvae were scanned usin...
Y Yanase, H Watanabe, I Fujimoto, T Yoshimura, Y Fujii