Your search resulted in 1100 documents. Displaying 25 entries per page.
Evaluation of field test data
2016 - IRG/WP 16-20594
The resistance against fungal decay and insect attack of wood can be highly variable, between boards and even within boards. The variability in durability is not always an issue, but for high demanding applications information about its reliability is required. This comprises the variability of outdoor performance. Durability testing in laboratory and outdoor exposures can provide a good basis to ...
F Bongers, C Brischke, J Van den Bulcke, W Gard, I De Windt, H Militz
Performance of copper treated poles and posts after three to fifteen years of exposure
2016 - IRG/WP 16-20595
Copper based wood preservatives are one of the most important wood preservatives for heavy-duty applications. Wood treated with copper-based preservatives performs excellent if applied according to preservative specifications. If used improperly premature failures might appear. In order to elucidate properties of copper treated wood in use, utility poles and posts treated with copper-based preserv...
M Humar, N Thaler
Assessment of the biological durability of wood treated with organosilicon compounds
2016 - IRG/WP 16-30685
The European wood construction market is in need of environmentally friendly wood-based products whose service life meets the expectations of end users. Non-biocidal silicon-based water repellents, which can be applied to different materials, help minimize their vulnerability/susceptibility to liquid water. Consequently, they have the potential of increasing wood’s resistance against decay fungi...
M Kutnik, M Montibus, S Derocker, S Salivati, J-P Lecomte
Performance of 3-iodo-2-propynyl butyl carbamate (IPBC) in L-joints under tropical conditions
2016 - IRG/WP 16-30688
The ability of 3-iodo-2-propynyl butyl carbamate (IPBC) to protect wood against fungal decay out of soil contact was evaluated using ponderosa pine L-joints at two exposure sites over a 12 year period. IPBC tended to provide better protection when formulated in an organic solvent and when applied using a double vacuum treatment. Performance also tended to be better when systems contained a water...
J J Morrell
Effects of Bio-oil Obtained from Laurel (Laurus nobilis) Residues on Biological, Physical, and Mechanical Properties of Treated Wood
2016 - IRG/WP 16-30692
In this study, the effects of bio-oil obtained from Laurel (Laurus nobilis) residues on biological (decay, insect, termite resistance), physical (water absorption, tangential and radial swelling), and mechanical properties (MOE, MOR and CSPG) of treated wood samples were studied. The bio-oil used in this paper was produced by the help of fixed bed reactor type pyrolyzer. GC/MS analysis showed that...
S Akbas, A Temiz, N Terziev, M H Alma, S Palanti, E Feci
Decay resistance of wood treated with bio-friendly preservative systems
2016 - IRG/WP 16-30698
Due to more restrictive toxicological requirements and increased ecological awareness of consumers, wood preservatives containing biocides are no longer desired on the market. Therefore, research on new environmentally friendly formulations is of great importance. One of the possible solutions is to develop new preservatives based on natural substances, which are harmless to humans, animals and th...
B Mazela, G Cofta, W Perdoch, L Ross Gobakken, P Kwaśniewska-Sip
Decay resistance of beech wood and plywood treated with different type of phenol-formaldehyde (PF) resins
2016 - IRG/WP 16-40717
In this study treatment of beech and poplar wood veneers with (PF) resin industrial scale and screening tests of nine different phenol-formaldehyde (PF) resins were made. Specifically, the effect of different phenol-formaldehyde (PF) resin types on the resistance of beech wood against brown- and white-rot fungi was evaluated. Criteria for selection of optimal (PF) resin were based on minimum WPG ...
V Biziks, S Bicke, H Militz
Incorporation of raw boron minerals to protect particleboard against decay and mold fungi, termites and insects
2016 - IRG/WP 16-40729
This paper evaluated the biological performance of particleboards incorporated with the raw boron minerals ulexite and colemanite against decay, mold fungi, termites and insect larvae in comparison with that of particleboards with zinc borate, or boric acid plus a borax mixture. The results showed that ulexite and colemanite were highly effective against the decay fungi and termite attack in labor...
S N Kartal, E Terzi, P Gerardin, C M Ibanez, T Yoshimura
Role of cell wall specific moisture content on the brown-rot fungal attack on wood
2016 - IRG/WP 16-40736
Wood is a hydroscopic resource because the cell wall polymers contain hydroxyl and other oxygen-containing groups that attract moisture through hydrogen bonding. Moisture content varies with changing moisture content in its environment. The moisture content in wood is responsible for many of the performance properties we observe. The strength properties of wood are dependent on the moisture con...
R M Rowell
Enhancing wood properties through bio-based and non-biocidal co-polyesters
2016 - IRG/WP 16-40740
The commonly used wood preservation treatments are nowadays facing huge environmental issues, as well as increasing public concern. As regards those concerns, legislation tends to regulate the use of biocidal preservation chemicals.
Thus, it does appear crucial to provide alternatives to the use of biocides to allow different outdoor uses of wood such as for, posts, decking, and cladding or even ...
C L’Hostis, M-F Thévenon, E Fredon, P Gérardin
Fungal resistance and accelerated weathering of Wood-Plastic composites reinforced with Maritime pine wood flour
2016 - IRG/WP 16-40750
This study evaluates the durability of wood-polymer composites (WPCs) elaborated for use in cladding application from recycled polypropylene (rPP) and wood flour. Local Maritime pine wood flour derived from regional sawmills was used in the study to reduce the environmental impact associated with transport. Different wood-plastic ratios with and without UV stabilizers and biocide were tested. One ...
M Jebrane, T Fournier, N-E El Bounia, F Charrier-El Bouhtoury
Effect of different concentration of furfurylation on physical properties and decay resistance of Paulownia wood
2016 - IRG/WP 16-40762
The furfurylation process is an extensively investigated wood modification process. Penetration of Furfuryl alcohol molecules into the wood cell wall results in a permanent swelling. In the present study, different concentrations effect of furfuryl alcohol monomer on physico-biological properties such as water uptake, dimensional stability and decay resistance of wood polymer made by fast-growing ...
M Ghorbani, H Asghari
Decontamination of sludges, liquids and soils polluted by “class 1, 2 & 3a” and “temporary” wood treatment products from dipping tanks
2016 - IRG/WP 16-50315
Wood is one of the most widely used building materials as it is easy to find and process. As an organic material, time leads to a degradation of its substance, and even more so when it is exposed to pathogens such as fungi, bacteria and insects. In order to try and inhibit this phenomenon, several preservation treatments have been developed and applied thanks to the production of chemical biocides...
A Zaremski, E Wozniak, S Maman, C Zaremski, S Morel
Estimation of wood degradation determined by visual inspection, mechanical testing and DNA characterisation – report after 3 years of exposure
2016 - IRG/WP 16-30700
The influence of two separate treatments, thermal modification and alkaline copper quaternary (ACQ, Silvanolin©) treatment, on fungal decay, visual disfigurement, deterioration in mechanical properties and fungal community structure was assessed on Norway spruce (Picea abies) and compared with the performance of two naturally more resistant tree species native to North America: Douglas fir (Pseud...
N Thaler, T Martinović, M Bajc, D Finžgar, H Kraigher, A Sinha, J J Morrell, M Humar
Assessment of the quality and lifetime of wooden pile foundations
2017 - IRG/WP 17-10883
The development of wooden pile foundations started centuries ago and enable man to build and live in strategic and fertile areas. Although the building methods, the building materials and the building regulations chanced especially over the last decades, worldwide wooden pile foundations still fulfil their function to support above ground constructions of which many belong to our cultural heritage...
R W W M Klaassen, A Jorissen, H Keijer
Untreated and copper-treated wood soaked in sodium oxalate: Effects of decay by copper-tolerant and copper-sensitive fungi
2017 - IRG/WP 17-10888
Copper is widely used as the primary component in wood protectants because it demonstrates a broad range of biocidal properties. However, a key concern with using copper in wood preservative formulations is the possibility for brown-rot basidiomycetes to resist the toxic effect. Many brown-rot basidiomycetes have evolved mechanisms, like the production and accumulation of oxalate, which helps thes...
K M Ohno, G T Kirker, A B Bishell, C A Clausen
Genetic characterisation of the deathwatch beetle – Call for support
2017 - IRG/WP 17-10890
The deathwatch beetle (Xestobium rufovillosum) is one of the most important pests of historical wood constructions. Further analysis of the exact nature of the feeding habits regarding diet and wood characteristics might deliver answers for controlling this pest. Also there is little known about genetic variability and population structure within the species. For analysis of infested wood and also...
M Höpken, E Melcher, J Trautner
Oak maturation casks at the Rodenbach brewery, an industrial heritage of the Flemish Community requiring protective measures
2017 - IRG/WP 17-10898
Brewery Rodenbach has world-renowned cask halls with close to 300 oak casks, some of these big maturation casks are 150 years old and this is protected as part of the industrial heritage of the Flemish Community. Since some of these maturation casks or “foeders” were the last decades no longer fully in use some parameters of their physical condition might have increased incidence of fungal dec...
J Van Acker, I De Windt, R Ghequire
Comparison of 1H qNMR and NIR spectroscopic methods to predict heartwood decay resistance in Dicorynia guianensis Amsh
2017 - IRG/WP 17-20601
Dicorynia guianensis is by far the most exploited wood in French Guiana, as it is an abundant tree species associated with good technological properties. However, the decay resistance of D. guianensis wood against lignivorous fungi pathogens is sometimes variable. Therefore, the development of tools to predict the decay resistance of D. guianensis heartwood is relevant in wood science and agrofore...
C Flora, G Frédéric, M-F Thevenon, Y Estevez, C Duplais, N Amusant
Laboratory test to determine the effect on durability of combining biobased building materials with timber in construction
2017 - IRG/WP 17-20604
The use of Structural Insulated panels is a construction approach that is seeing more abundant use and is becoming a widely available method. Preformed units are usually a composite structure which often include a range of bio-based materials such as timber, wool or straw. Traditional laboratory based wood decay tests do not take into account this combination of biobased materials and it may be po...
S F Curling, G A Ormondroyd
Monitoring of wood biodeterioration by infrared spectroscopy
2017 - IRG/WP 17-20607
The susceptibility of wood to deterioration by rotting fungi is intrinsically related to its chemical composition and the environmental conditions at its place of use, and if not detected in time, can cause enormous financial losses. The process of wood biodeterioration by decay fungi can be evaluated through laboratory accelerated test, in specific field tests, or through non-destructive techniqu...
E Meneses Oliveira, A Florian da Costa, J W Batista Braga
Bio-deterioration of Southern Pine Stakes at Geographically Different Testing Sites
2017 - IRG/WP 17-20609
Southern pine (SP) sapwood is commonly used in preparing the standardized stakes for performance testing as referenced in the American Wood Protection Association (AWPA) Book of Standards. For example, the standardized above ground test methods E16/E18 and the standardized ground contact test method E7 all use sapwood of SP as the preferred wood species for preservative performance test. In this...
Jun Zhang, J Horton
Rapid detection of the Alaska yellow cedar, Callitropsis nootkatensis (Cupressaceae) extractives using Fourier transform infrared (FT-IR) spectroscopy
2017 - IRG/WP 17-20612
Global changes in wood harvesting towards plantation species grown on much shorter rotations has the potential to markedly alter wood quality perceptions. Nowhere is this more risky than with naturally durable species where there is compelling evidence that faster grown woods tend to be less durable. The ability to non-destructively assess durability may allow growers to identify materials that re...
S Lipeh, J J Morrell
Monitoring Diversity and Colonization Patterns of Wood-Inhabiting Fungi Using Field Stake Tests
2017 - IRG/WP 17-20614
Advances in molecular identification of microbial communities enabling rapid microorganism determination have allowed ecological data to be increasingly incorporated into standardized wood performance tests. Combining standard field tests with molecular methods to study wood-associated microflora can help to better understand fungal colonization and decay processes of wood in service. The potentia...
P Torres-Andrade, J Cappellazzi, J J Morrell
An experimental study of mould growth and wood decay in timber frame walls
2017 - IRG/WP 17-20623
This paper deals with parameters related to the occurrence of mould growth and wood decay in timber frame walls. In a first part, the hygrothermal conditions inside a timber frame wall finished with brick veneer cladding are analysed to get an idea of possible moisture related problems. It is shown that, based on the VTT mould prediction model, there is a mould risk on the interface between the in...
M Vanpachtenbeke, J Van den Bulcke, I De Windt, J Langmans, S Roels, J Van Acker