Your search resulted in 3359 documents. Displaying 25 entries per page.
Evaluation of Decay Resistance of Copper-based Preservatives Treated-Wood exposed to different field test sites in Korea
2022 - IRG/WP 22-20679
In Korea, preservative treated wood is required to have a stamp on the surface which contains information such as wood species, use categories, and the company that treated the wood. Such stamping is necessary to safely and appropriately use the treated wood. Since majority of treated wood is being used outdoor environment, the treated wood must have efficacy against wood decay fungi or termite. I...
W-J Hwang, S-M Yoon, Y Park, Y-S Choi, H-M Lee, J-W Kim
Comparative study of the properties of silicate coatings with different mineral pigments (titanium dioxide, iron (III) oxide, copper (II) oxide) on the surface of wood
2022 - IRG/WP 22-40936
Silicate coatings are attractive alternatives to conventional organic-based coatings for wood protection. In this work, silicate coatings were prepared with a potassium silicate binder modified with a methyl siliconate solution, and three types of mineral pigments titanium dioxide, iron (III) oxide and copper (II) oxide. The coatings were applied on beech wood and cured under ambient conditions. T...
A M Cheumani Yona, M Petrič
Long-term Performance of Treated Timbers in a Sub-tropical Marine Exposure
2023 - IRG/WP 23-11015
The long-term performance of preservative-treated and modified wood in marine exposures was assessed in Brisbane, Queensland, Australia. This report describes the final destructive assessment of the surviving Australian panels after 11 years of exposure. This site presents the potential for attack by shipworms (likely Bankia spp.), pholads (Martesia striata), Limnoria and Sphaeroma terebrans. Mos...
E L Galore, J Norton, A Zahora
Virtual Reality of Wood Protection
2023 - IRG/WP 23-20698
Virtual reality (VR) is a technology that allows people to explore and interact with computer generated environments using devices that stimulate different senses (sight, sound and touch). VR is mainly used for education, training and entertainment, but it also has the potential to provide new insights into scientific phenomena. In this paper we describe the evolution of VR and its many uses, focu...
D Feng, Y Liu, M Turner, A Limaye, P D Evans
Geopolymer as a fixation method for tannin-based wood preservatives
2023 - IRG/WP 23-30774
This study aims to test if a second step impregnation with a geopolymer solution can fix Colatan GT10, a commercial extract rich in tannins, to wood, reducing their leaching and improving their performance as wood preservatives. Scots pine sapwood specimens of 40×10×5 mm3 were impregnated with Colatan GT10 tannin mix, geopolymer, and as combined treatment Colatan GT10 with subsequent geopolymer ...
Y M López-Gómez, A Barbero-López, A Haapala
Establishing the minimum effective penetration of wood preservatives in the refractory heartwood of E. nitens
2023 - IRG/WP 23-30780
Conventional pressure treatment of many Australian hardwoods results in little to no penetration of heartwood and a non-uniform envelope treatment of <5 mm surrounding a mostly untreated core. This is a major issue for many of the low durability plantation hardwood timbers that are grown in Tasmania, which contain high percentages of heartwood. Long term studies on softwoods such as spruce decking...
J R Vargas, J J Morrell, L Yermán, K C Wood
X-ray fluorescence microscopy of copper ion distribution in decay of copper-treated wood by Fibroporia radiculosa
2024 - IRG/WP 24-11047
Copper is an essential metal ion for eukaryotic life and must strictly be regulated as excess levels can cause oxidative damage, enzyme inhibition and denaturation, interruptions in nutrient transport and even cellular death. Copper-based wood treatments have efficacy against a wide range of biological organisms including decay fungi and are used in the majority of preservative formulations for ou...
K M Ohno, J Jakes, A B Bishell, L Li, Q Jin, E Maxey
X-ray micro-computed tomography of copper distribution in CA, ACQ and MCA treated wood and changes in microstructure of ACQ-treated southern pine following natural weathering
2024 - IRG/WP 24-20707
We hypothesized that X-ray micro-CT would be able to visualize: (a) the distribution of copper in CA-treated southern pine; and (b) microstructural changes in ACQ-treated southern pine exposed to natural weathering. Small blocks were removed from southern pine samples treated with CA and also southern pine treated with ACQ and MCA. Small blocks were also removed from ACQ-treated boards (flat and p...
D Feng, M Turner, P D Evans
Comparison of copper leaching from alkaline copper quat and copper compound nanosol-based wood preservative treated wood
2024 - IRG/WP 24-20726
To improve the leaching resistance of copper ion-based wood preservatives, copper compound nanosol-based wood preservatives were developed and its copper leaching characteristics were evaluated. Three types of preservatives (DC1, DC2, DC3) were prepared with different crystallinity and dispersant types of copper compound nanosol, and the copper concentration was adjusted to be the same as that of ...
Y-S Choi, S-M Yoon, J O Kim, J-G Kang, J-G Park
Virtual reality of wood protection
2024 - IRG/WP 24-20727
Virtual reality (VR) is a technology that allows people to explore and interact with computer generated environments using devices that stimulate different senses (sight, sound and touch). VR is mainly used for education, training and entertainment, but it also has the potential to provide new insights into scientific phenomena. We describe our work on the use of VR as a learning tool for students...
D Feng, Y Liu, M Turner, A Limaye, P D Evans
A new wood preservative system based on basic copper compound nanosols
2024 - IRG/WP 24-20728
A bottom-up process was established to synthesize insoluble basic copper compound nanoparticles and simultaneously form a stable nanosol by dropping a neutralizing agent solution into an aqueous solution of a copper compound to which an appropriate dispersant system was added. The main ingredient of MCA (Micronized Copper Azole), the leading copper-based wood preservative in the current world mark...
J O Kim, J-G Kang, Y-S Choi, S-M Yoon, H-M Lee, J-G Park
Keeping wood greenest: Maximizing the unique benefits of preserved wood through end-of-life planning to realize carbon sequestration and a circular economy
2024 - IRG/WP 24-50387
While competitive fuels and different energy sources are a main driver of current difficulties with using end-of-life wood products for fuel, that is a potentially smaller problem than the rapidly changing carbon footprints of competitive materials, which can potentially be smaller than wood, if the wrong decisions are made at the end of life by users and waste generators. While users have several...
J D Lloyd, B Poe
Levels of chromated copper arsenate in aged radiata pine vineyard posts
2024 - IRG/WP 24-50389
At the Centre for Timber Durability and Design Life, Australia a cooperative project is underway with Forest and Wood Products Australia, supported by a consortium of timber producers, chemical suppliers and timber users to identify alternative pathways for treated timber and EWP’s. Under this initiative, we are focusing on establishing the current and forecasting future volumes of treated timbe...
T Singh, T Yi, P Mitchell, J Norton
Quantitative assessment of wood preservative emissions to waterways
2024 - IRG/WP 24-50393
The Organisation for Economic Co-operation and Development (OECD) Emission Scenario Document (ESD) for Wood Preservatives provides methods to quantify the release of active substances from treated wood for various scenarios including sheet pilings in a flowing waterway (OECD 2013). The ESD is used for environmental risk assessment of wood preservatives according to the Biocidal Products Regulation...
K J Rader, R Carbonaro, C Mackie
Danish wood preservatives approval system with special focus on assessment of the environmental risks associated with industrial wood preservatives
2001 - IRG/WP 01-50166-01
The following is a description of the procedure used by the Danish Environmental Protection Agency to assess the environmental risks associated with preservatives used in the pressure impregnation of wood. The risk assessment covers issues considered to be of significance for the environment and which are adequately documented so as to allow an assessment. Such issues are persistence and mobility ...
J Larsen
Data sheet on wood-boring insects. Apate monachus Fabricius. 2. Position systématique, nomenclature, identification et distribution - Espèces végétales attaquée
1981 - IRG/WP 1105
R L A Damoiseau
Confocal laser scanning microscopy of a novel decay in preservative treated radiata pine in wet acidic soils
1997 - IRG/WP 97-10215
Light microscopy of radiata pine (Pinus radiata D. Don) field test stakes (20x20x500mm3) exposed in wet acidic (pH 3-4) soil for 12 - 24 months showed predominance of an unusual type of decay characte-rised by tunnelling attack of wood cell walls. After two years decay was moderate to severe in wood treated to ground contact CCA specifications and also equivalent retentions of creosote, and a numb...
R N Wakeling, Ying Xiao, A P Singh
Effect of acetylation on decay resistance of wood against brown-rot, white-rot and soft-rot fungi
1989 - IRG/WP 3540
Effect of acetylation on decay resistance of wood was investigated using wood blocks of Cryptomeria japonica, Pinus densiflora, Albizia falcata and Fagus crenata. Blocks were treated with uncatalyzed acetic anhydride for different lengths of time and exposed to Tyromyces palustris, Serpula lacrymans, Coriolus versicolor and unsterilized soil. The action of OH-radical on acetylated wood was also ex...
M Takahashi, Y Imamura, M Tanahashi
The IRG..Chanelling information and ideas into the mainstream of wood preservation technology
1985 - IRG/WP 5241
IRG Secretariat
Wood preservation in Poland
2004 - IRG/WP 04-30362
Dynamic growth of market demand for wooden elements and articles, generated in Poland increase of interest in industrial preservation. Today, Poland is a substantial producer and exporter of wood made products. Majority of exported wood - approximately 70% - is scotch pine (Pinus silvestris L.), which, due to its natural durability, requires preservation....
A Kundzewicz
Wood preservatives: Field tests out of ground contact. Brief survey of principles and methodology
1976 - IRG/WP 269
This paper contains the following spots:
1.: The general need for field tests. 2.: Interests and limits of field tests in ground contact. 3.: Various methods in use for out-of-ground contact field tests. 4.: Fungal cellar tests are they an alternative to above-ground decay exposure tests? 5.: Conclusions....
M Fougerousse
The effect of certain wood extractives on the growth of marine micro-organisms
1977 - IRG/WP 438
S E J Furtado, E B G Jones, J D Bultman
Management of the wood and additives wastes in the wood processing industries: Problematics and technical answers review
1996 - IRG/WP 96-50073
Management pathways for pure wood subproducts are well known and used; but as soon as additives like preservatives, glues, varnishes or coatings are present within the wood wastes, their disposal or valorization becomes more tricky. The different kinds of mixed wood wastes of the wood processing industries, from the sawmill to the furniture manufacture, are identified herewith and their diversity ...
S Mouras, G Labat, G Deroubaix
Biological screening assays of wood samples treated with creosote plus chemical additives exposed to Limnoria tripunctata
1980 - IRG/WP 408
Laboratory methods for exposure of treated wood coupons to Limnoria tripunctata are described. Chemical additions to creosote were screened using this method. Three pesticides, Endrin, Kepone, and Malathion proved particularly effective. The addition of varying percentages of naphthalene to creosote using several treatment methods are currently being assayed. Results to date show that the coupons ...
B R Richards, D A Webb
Preliminary study of the fungicidal and structural variability in copper naphthenates and naphthenic acids
1996 - IRG/WP 96-30114
Copper naphthenates, an oil-borne wood preservative listed by the American Wood-Preservers' Association (AWPA), is manufactured by complexing copper(II) with naphthenic acids. Prior to AWPA listing as a wood preservative, field experiments showed that copper naphthenates generally had good stability and were active against wood-destroying organisms. Recently, however, there have been reports ...
T Schultz, D D Nicholas, L L Ingram Jr, T H Fisher