Your search resulted in 606 documents. Displaying 25 entries per page.
Chemical Analysis of Southern Pine Pole Stubs Sixty Months Following Treatment with a Methylisothiocyanate-Based Solid Fumigant Stick
2019 - IRG/WP 19-30740
Methylisothiocyanate-based fumigants have been commercially used in the United States for over 35 years to control internal decay in utility poles and other wooden structures with little technological advancement. The most recently commercialized methylisothiocyanate-based fumigant is chemically known as dazomet. Dazomet is a free-flowing powder or granule that decomposes in the presence of mois...
D J Herdman, T Pope, R R Browning
Exemplary aboveground hardwood protection from Coptotermes curvignathus under weathered conditions conferred by proprietary microemulsion-based cypermethrin (SARPECO®) and permethrin (AXIL®) biocides
2019 - IRG/WP 19-30749
SARPECO® (with cypermethrin) and AXIL® (with permethrin) solutions are water-based wood preservatives approved for dipping treatment providing 25 years of termite protection for solid wood and wood-based products in Europe and for more than 10 years in Indonesia. SARPECO® and AXIL® solutions are patented formulations based on concentrated microemulsions (ME) diluted with water as a dipping tre...
D Messaoudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
Development of beech wood thermo-chemical modification treatments based on different vinylic derivatives of glycerol and polyglycerol
2019 - IRG/WP 19-40855
In this study, a combination between chemical and thermal wood modification has been investigated. Seven types of a low concentration of 10% aqueous additive solution of vinylicglycerol [glycerol-maleic anhydride (Gly-MA), glycidyl methacrylate (GM), and Glycerol methacrylate-maleic anhydride (GM/MA(2eq))], vinylicpolyglycerol [polyglycerol-maleic anhydride (PG-MA), polyglycerol methacrylate (PGM...
M Mubarok, S Dumarcay, H Militz, K Candelier, M-F Thevenon, P Gerardin
Improvement of wood decay and termite durability resulting from combined treatments based on borax/phenol-formaldehyde impregnation followed by thermal modification
2019 - IRG/WP 19-40871
This study determined the factors influencing the boron content after leaching of pine blocks impregnated with aqueous solution of phenol-formaldehyde (PF) resin with or without borax and subjected to heat treatment by response surface methodology. An experimental design permits to analyze the effects of heat treatment temperature (150, 185 and 220°C), curing time (5, 12, 5 and 20 hours), resin c...
S Salman, M-F Thevenon, A Petrissans, S Dumarcay, P Gerardin
Thermal performance and fire safety properties of traditional circumferential log-cabin walls
2019 - IRG/WP 19-40872
The paper describes the experiment of fire resistance of a circumferential log-cabin wall fragment using various structural modification of the gap between two log members. The influence of the gap structural modification on the criterion of fire resistance E (envelop integrity) and I (insulation) is evaluated. The evaluating criteria are represented by the development of temperatures measured in ...
S Jochim, L Makovicka Osvaldova, M Zachar, Z Danihelova
Effect of pretreatment of wood surfaces with a copper monoethanolamine solution on the natural weathering performance of semitransparent stains
2019 - IRG/WP 19-40881
Semitransparent stains for wood products are favored for outdoor applications in Japan because these finishes do not hide the wood grain. However, the photoprotective effects of wood surfaces are low, therefor there is a need to improve the weathering performance. We examined the natural weathering performance of semitransparent stains on wood pretreated with a copper monoethanolamine solution (Cu...
S Isaji, H Shibui, Y Hirabayashi
Experimental study on compressive strength performance of cross laminated timber with biodeterioration damage
2019 - IRG/WP 19-40883
The mass timber construction has attracted attention around the world. The reasons are due to the environmental impacts and the potential of the strength performance and quantity of the wood. Nowadays, CLT is one of the most important materials for the timber constructions. If we use CLT as a building material, we should consider the biodegradation risk for long time use. From an estimation of fut...
T Mori, Y Otsubo, R Inoue, M Ikeda, K Kambara, W Ohmura
Influence of Drying Condition of Wood on Rusting of Nail
2019 - IRG/WP 19-40887
Recently in Japan, the durability of metal joint in wooden structures become important. Revised Building Standard Law was enacted in 2000 and Act on the Promotion of Popularization of Long-life Quality Housing was enacted in 2008 in Japan. Since then, the durability of the metal joints in the wooden houses becomes important. But there are not any detailed regulation for the durability of the metal...
H Ishiyama, N Wada, T Nishimura, T Mori
Study on Nailed Joint with Iron Contamination. Part1: Shear Performance of Nailed Joint with Iron Contamination
2019 - IRG/WP 19-50349
In Japan, The building standard law was amended in 2000.1) The use of metal joint was obligated by this law. Since then, metal joints have been largely used for wooden buildings. Also, Act on the Promotion of Popularization of Long-life Quality Housing was enacted in 2009 and leaving Long-life Quality Housing has been focused on2). However, leaving houses to posterity for a long time causes severa...
R Nakano, D Nakano, H Ishiyama
Durability and climate change - implications for wood building structures
2019 - IRG/WP 19-50361
Sustainable building practices are rooted in the need for reliable information on the long-term performance of building materials; specifically, the expected service-life of building materials, components, and assemblies. This need is ever more evident given the anticipated effects of climate change on the built environment and the many governmental initiatives world-wide focused on ensuring that ...
M Lacasse
Performance of naturally durable decks after 15 years of field exposure
2020 - IRG/WP 20-10963
A decking test of Canadian species considered to be naturally durable was inspected after 15 years of exposure at test sites in Ontario and British Columbia. Based on the materials used in this experiment, Douglas-fir and yellow cypress had the greatest decay resistance, followed by eastern white cedar and western redcedar, and then by western larch and tamarack. All materials tested were more dur...
R Stirling, D Wong
Observed and projected changes in the climate based decay hazard of timber in the United Kingdom
2020 - IRG/WP 20-20665
The risk of microbiological attack on wood is determined by both material and climatic factors and indeed the hazard for a component is based on its intrinsic durability and the conditions in which it is used. The use of wood and organic materials in construction is increasing but ultimately all these materials will be susceptible to microbiological attack. The Scheffer Climate index applies clima...
S F Curling, G A Ormondroyd
Physical barriers against marine borers based on synthetic polymers
2020 - IRG/WP 20-30754
Currently in Spain there are no chemical treatments that are really effective against attacks of marine bores in civil constructions within more or less permanent contact with seawater. On the other hand there are also no physical barriers that allow easy placement or execution, and much less offer a minimum guarantee of performance in the medium or long term. In fact, in these recent years there ...
A Lozano, D Lorenzo, M Alonso, J J del Coz, F Álvarez
Performance of a water-borne stain on beech, spruce, MDF and OSB improved by plasma pre-treatment
2020 - IRG/WP 20-40897
Coatings are an important part of wood protection, especially for outdoor applications. In order to provide a good protection, protective coatings need to exhibit good adhesion, mechanical resistance, and weathering resistance. Plasma pre-treatments are an established method to increase the performance of existing coatings including those on wood and wood-based substrates. Moreover, plasma deposit...
S Dahle, J Žigon, I Uranjek, M Petrič
Longterm Performance of Treated Timbers in Marine Exposures
2020 - IRG/WP 20-10969
The performance of preservative-treated or modified woods in marine exposures was evaluated at test sites in Newport, Oregon, USA and Brisbane, Queensland, Australia. All samples have exhibited excellent performance at the Newport, Oregon site, while attack was more aggressive at the sub-tropical Brisbane site. Acetylated wood as well as samples treated with 7.3% chromated copper arsenate (CCA-T...
M Konkler, A R Zahora, J Norton, J J Morrell
Development of procedures for sampling, testing, and classification to determine the biological durability of wood and wood products
2020 - IRG/WP 20-20676
This paper informs about a research project, which deals with several shortcomings and a lack of clarity within EN 350:2016. The project started in January 2020, will run for 3 years, and is operated by the Institute of Wood Technology Dresden (IHD) and the University of Goettingen (UGOE).
Determination and classification of durability of wood and wood products against wood-destroying organisms ...
W Scheiding, K Jacobs, S Bollmus, C Brischke
Monitoring uptake and penetration of pesticides during impregnation of pine (Pinus sylvestris) and spruce (Picea abies) wood with bio-based microemulsion gel formulations
2020 - IRG/WP 20-30756
Even in dry state wood is susceptible to biological degradation. Preservation against biological decay in exposed conditions is conventionally achieved by impregnating the wood with pesticides applied at professional and industrial levels. Impregnation of wood with preservatives is a complex process that involves wood macro- and microstructure, and the physical characteristics of woods. Here we fo...
D Messaoudi, K Ruel, J-P Joseleau
A summary of decay performance with citric acid and sorbitol modification
2020 - IRG/WP 20-40898
Application of wood-based products as construction materials is one piece of the big puzzle to mitigate climate change. Wood is susceptible to biological deterioration. Environmentally motivated legislation is making the use of biocides less attractive from a commercial perspective. Ideally, a wood modification technology should be of low cost, water based and make use of thermal curing. This rese...
G Alfredsen, E Larnøy, G Beck, J Biørnstad, L R Gobakken, C A S Hill, A Treu
Durability of acetylated Radiata pine: Laboratory tests and performance in practice
2020 - IRG/WP 20-40899
Wood acetylation is an established process to enhance biological durability and dimensional stability of lower valuable wood species without the use of biocides. Acetylated Radiata pine (ACCOYA® wood) has been on the market for more than 10 years now, starting in 2007.
Numerous lab tests have confirmed the high durability of acetylated Radiata pine. Here, additional data with four Radiata pine ...
K Jacobs, W Scheiding, B Weiß
Biofinish: A Functional Wood Surface Treatment based on Aureobasidium
2020 - IRG/WP 20-40903
Xyhlo Biofinish is a natural and environmentally friendly wood protection concept based on linseed oil impregnation and a fungal-based coating. It emerged in the late 1990s and has been developed over the past 15 years into an industrially applicable process in the Netherlands. The combination of linseed oil impregnation and a surface treatment with the living fungus Aureobasidium extends the serv...
S Rensink, M Sailer, S Roukens, J Gerber, H van der Mel, K Potgieter, J Spit, R Bulthuis, C Struck, M Bennink
Performance of resin-treated solid wood and laminated veneer lumber (LVL) under marine conditions
2021 - IRG/WP 21-10973
Wood is a traditional building material in the marine environment, where it is exposed to extremely harsh conditions. Most of the indigenous softwood and hardwood species in Europe are not durable against attack by marine organisms. Recently, wood modification has been considered as an alternative to protect non-durable wood species under use class (UC) 5 (EN 335, 2013) conditions. The present stu...
L Emmerich, C Brischke, S Bicke, H Militz
Plasma treatment of wood - a review of 15 years of research in Göttingen
2021 - IRG/WP 21-40913
Wood is an important renewable resource and can be found omnipresent in everyday life. Its natural properties offer numerous advantages regarding physical, mechanical but also aesthetic aspects, but also challenges that one has to address with various modification methods.
Driven by the desire to promote the use of promising new technologies using plasmas, there has been a close research network ...
P Sauerbier, R Köhler, G Avramidis, W Viöl, H Militz
Preliminary investigation for preservation method of CLT using non-pressure treatment
2021 - IRG/WP 21-40919
Cross-laminated Timber (CLT) is increasingly being used in residential and non-residential construction around the world, and some of these areas are at high risk of biodeterioration. Addition to moisture management of construction, preservative treatment of CLT may be needed to prevent decay and termite attack in the area. Pressure treatment being most reliable, is not feasible due to the large d...
T Miyauchi, Y Ohashi, J Miyazaki, R Takanashi, H Shibui, S Isaji, T Shigeyama, Y Sugai, A Yamamoto, T Hramiishi, T Mori, H Matsunaga
Natural durability and moisture dynamics of commercially important European wood species after weathering
2022 - IRG/WP 22-10992
Wood is a frequently used material. Timbers’ mechanical properties, particularly its favourable strength-to-mass ratio, make them suitable for many uses. Current environmental awareness has led to its renewed importance as a building material. However, wood is susceptible to decay that severely affect its outdoor performance. This study investigated how weathering affects the natural durability ...
E Keržič, M Humar
Evaluation of ecotoxicological effects of different coniferous wood treatments on two marine bioindicator species
2022 - IRG/WP 22-10999
Coniferous wood panels (Picea abies) were treated with two concentrations of copper-based impregnating agent to increase its durability in marine and brackish environment. In order to assess the environmental compatibility of the treatments a laboratory experiment was conducted with two marine invertebrate species: bivalve Mytilus galloprovincialis and a gastropod Steromphala albida. The bioindica...
T Marčeta, N Nesto, I Guarneri, D Tagliapietra, V Moschino