Your search resulted in 125 documents. Displaying 25 entries per page.
IRG/COIPM INTERNATIONAL MARINE TEST - To determine the effect of timber substrate on the efectiveness of different preservatives in sea-water: Coding scheme
1976 - IRG/WP 420
It was agreed in Wildhaus on 15 May 1976 that preparations for the test detailed in Document No: IRG/WP/414 should commence immediately, but that initially only two water-borne preservatives should be used - a copper/chrome/arsenic (CCA) and a copper/chrome/boron (CCB) formulation respectively. PRL, England (R Cockcroft) would be responsible for supplying only the reference species treated with th...
Anonymous
Co-operative tests concerning the influence of solvent and drying method on the toxic limit of wood preservatives against Coniophora cerebella
1972 - IRG/WP 216
In the working group II of the IRG it was agreed that more knowledge was necessary concerning the influence of the solvent on the toxic limit of organic solvent types of wood preservatives against Basidiomycetes. A test program was drawn up and after discussion in the mentioned working group the final program was accepted by the co-operating institutes in 1969. In the test program two fungicides, ...
T Hof
Soft rot - Soil burial - Tests. Influence of the addition of nitrogen compounds to the soil on wood decay by soft rot
1972 - IRG/WP 213
The decay of wood specimens buried in soil is influenced by various factors. Decisive are the water content, the content of organic substances, the pH-value, the content of mineral nutritive salts, nitrogen content, etc. of the soil. These tests were carried out in order to investigate if the decay of wood in the soil will be influenced by additions of various nitrogen-compounds in different conce...
O Wälchli
Hypoxylon species of the groups Papillata and Applanata on European beech in Serbia, Yugoslavia
1977 - IRG/WP 166
In the previous Document No: IRG/WP/165 under the title 'The most important characteristics of some species of the genus Hypoxylon found in Serbia, Yugoslavia', a contribution has been made regarding the importance of 4 species of this genus found in Serbia. In this paper the significance of the Hypoxylon species was emphasized in connection with their distribution and growth esp...
M Petrovic
New research data confirming the suitability of bifenthrin as a wood preservative
1996 - IRG/WP 96-30116
Bifenthrin has been further tested against wood destroying insects, and its behaviour in wood has been extensively studied. Bifenthrin proved to be highly effective as a curative and preventative treatment against Anobium punctatum and Hylotrupes bajulus, after both leaching and evaporative ageing. Results of penetration tests with water and solvent based formulations, applied by brushing, dipping...
S Shires, P Héloir, B Chen, G Rustenburg
New Observations and Interpretation for Tunnelling Bacteria Decay
2006 - IRG/WP 06-10579
Decay micromorphology was studied systematically for diversely preservative treated Pinus radiata and Fagus sylvatica 20 x 20 x 500 mm stakes across 13 in-ground field test sites, during a 6.5 year exposure. Sites were selected to maximise occurrence of a diverse range of decay types. Micromorphology that suggested orientation of tunnelling bacteria with the cellulose microfibrils of the S2 and S1...
R Wakeling
Common Decay Micromorphology “Anomalies” Challenge Current Decay Classification
2006 - IRG/WP 06-10578
Decay micromorphology was studied systematically for diversely preservative treated Pinus radiata and Fagus sylvatica 20 x 20 x 500 mm stakes across 13 in-ground field test sites, during a 6.5 year exposure. New insight into the micromorphology of the early stages of decay enabled new and more detailed interpretation of the mechanism of their formation and suggested that current decay classificati...
R Wakeling
Evidence for Basidiomycete Tunnelling in Pinus radiata and Fagus sylvatica
2006 - IRG/WP 06-10587
Decay micromorphology was studied systematically for diversely preservative treated Pinus radiata and Fagus sylvatica 20 x 20 x 500 mm stakes across 13 in-ground field test sites, during a 6.5 year exposure. Sites were selected to maximise occurrence of a diverse range of decay types. Presence of clamp connections in close associated with tunnelling coupled with macroscopic features similar to whi...
R Wakeling
Is Field Test Data from 20 x 20mm Stakes Reliable? Effects of Decay Hazard, Decay Type and Preservative Depletion Hazard
2006 - IRG/WP 06-20327
Effects of decay hazard, decay type and preservative depletion hazard on the performance of variously preservative treated 20 x 20 x 500 mm Radiata pine and Fagus sylvatica test stakes across 13 field test sites in New Zealand and Queensland Australia were determined.
Radiata pine treated with an ammoniacal copper quaternary preservative (ACQ) (1.56% m/m a.i.) and copper chrome arsenate (CCA) (...
R Wakeling
Above and Below-Ground Depletion of Copper, Chromium and Arsenic from Pinus radiata and Fagus sylvatica at Thirteen Test Sites in New Zealand and Australia
2006 - IRG/WP 06-30402
The objective was to determine the significance of site and wood species on preservative depletion for a copper chrome arsenate preservative (CCA) from 20 x 20 x 500 mm field test stakes after 5.5 and 4.5 years for pine and beech respectively. At least 5 sacrificial stakes were used to produce site means. Site and wood species had a major effect on copper, chromium and arsenic loss from CCA treate...
R Wakeling
Protection of wood for above ground application through modification with a fatty acid modified N-methylol/paraffin formulation
2007 - IRG/WP 07-40378
Hydrophobic chemical modification can be regarded as an alternative approach to conventional wood preservation using biocides in order to protect wood in hazard class 3 according the European Standard EN 335-1.
A formulation containing fatty acid modified N-methylol/paraffin and an aluminium salt catalyst was used to change the material properties of wood in order to protect wood from fungal dec...
Nguyen Hong Minh, H Militz, C Mai
Multivariate analysis of infrared spectra for the prediction of the mechanical performance and dimensional stability of thermally modified wood
2007 - IRG/WP 07-40367
The use of calibrated mid-infrared Fourier transform (FTIR) spectroscopy for predicting the main bending strength parameters of thermally modified wood is described for the first time. The analysis is based on the handling of OSC-filtered FTIR data from control and treated wood samples, using partial least squares (PLS) regression.
Sets of Norway spruce, Scots pine and Beech wood samples were th...
M M González-Peña, M D C Hale
Quantitative and qualitative losses in wood of oriental spruce, Picea orientalis (L.) Link., induced by insects from forest to utility
2008 - IRG/WP 08-10647
In this study, some quantitative and qualitative losses in wood of oriental spruce, Picea orientalis (L.) Link., induced by insects from forest to utility were evaluated. In experimental plots, volume of trees damaged by Dendroctonus micans (Kug.) was 34% of the volume of total standing spruce trees in the oriental spruce forests of Turkey. The volume of standing trees that D. micans damaged was ...
H A Akinci, M Eroglu, G E Özcan, Ü C Yildiz
Above and Below-Ground Copper-Azole and Copper, Chrome Arsenate Depletion from Pinus radiata and Fagus sylvatica at Thirteen New Zealand & Australian Sites
2008 - IRG/WP 08-30460
The objective was to determine the significance of site on preservative depletion from Pinus radiata D. Don and Fagus sylvatica L. 20 x 20 x 500 mm field test stakes treated with a ground contact retention of copper amine plus tebuconazole (CuAz) and copper chrome arsenate (CCA) after approximately 5 years exposure to widely different soil and climate conditions. Site, wood species and their inter...
R Wakeling
Effects of CCB on wood strength of Eastern spruce (Picea orientalis L.)
2008 - IRG/WP 08-40416
The effects of CCB (chromate copper boron) on the static bending properties of Eastern spruce (Picea orientalis L.) based on MOE (modulus of elasticity) and MOR (modulus of rupture) were evaluated after full-cell vacuum/pressure treatment using a 3.0 % concentration followed by kiln-drying at 15 and 30 % moisture contents with heating the preservative at 30 and 40 ºC. The results showed that MOE ...
I Usta, M Hale
Comparison of permeability at different levels of moisture content in Bornmullerian fir (Abies bornmulleriana Mattf.) and Eastern spruce (Picea orientalis L.) impregnated under vacuum/pressure through full-cell method by using CCA and CCB of different concentrations
2007 - IRG/WP 07-40366
In this study, a comparison has been made in terms of the combined, longitudinal, tangential, and radial permeability of the species of Bornmullerian fir (Abies bornmulleriana Mattf.) and Eastern spruce (Picea orientalis L.) with moisture contents of 50 % and 15 %, which were impregnated under vacuum/pressure through full-cell method by using water-borne wood preservatives (impregnation materials)...
I Usta
Adsorption of ionic liquids by Scots pine wood (Pinus sylvestris L.) and beech (Fagus sylvatica L.): equilibrium and kinetic modeling
2010 - IRG/WP 10-20447
In this paper methods for the adsorption study of quaternary ammonium-based ionic liquids on Scots pine (Pinus sylvestris L.) and beech (Fagus sylvatica L) are presented. Kinetic and equilibrium adsorption of compounds were evaluated. The equilibrium data fitted very well to the Langmuir adsorption models. The highest correlation coefficients determined from the pseudo-second order kinetic model ...
J Zabielska-Matejuk, A Stangierska, M Kot
Comparison of exterior performance of two coating systems based polyurethane applied Pinus sylvestris L. and Picea orientalis L. wood
2012 - IRG/WP 12-40588
Some surface changes in sapwood and heartwood of two species before applying clear-coating were characterized after accelerated weathering time. Wood specimens covered with two types polyurethane (PU) films were also observed in accelerated weathering exposure. In this study, changes on the wood surface were compared of between wood specimens covered with two types polyurethane (PU) films after ir...
Ö Özgenç, Û Cafer Yıldız
The impact of catalyst on the properties of furfurylated beech wood
2016 - IRG/WP 16-40748
European beech (Fagus sylvatica L.) is a major tree species of European forest that is underexploited because of its low dimensional stability and durability. Similarly to what has been developed with radiata pine, furfurylation might be the answer to optimize the utilization of local beech wood. Beech wood furfurylation process was studied using five different catalysts: maleic anhydride, maleic ...
P S Sejati, A Imbert, C Gérardin, S Dumarçay, E Fredon, E Masson, D Nandika, T Priadi, P Gérardin
Evaluation of Commercially Available Polyurethane Resin to Develop Non-biocidal Wood Preservation Treatments
2016 - IRG/WP 16-40751
Evaluation of commercially available polyurethane (PU1 and PU2 and polyisocyanate (PNCO) to develop non-biocidal wood preservation treatments have been conducted. A simple method by vacuum impregnation of these resins into beech wood (Fagus sylvatica L) and pine wood (Pinus sylvestris L.) samples followed by varied curing process at ambient temperature, 103oC, and 200oC have been performed. Based ...
M Mubarok, Y Sudo Hadi, J Suryana, I W Darmawan, F Simon, S Dumarcay, C Gérardin, P Gérardin
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
Mechanical and biological durability properties against soft-rot and subterranean termite in the field (grave-yard test) of beech wood impregnated with different derivatives of glycerol or polyglycerol and maleic anhydride followed by thermal modification in an opened or in a closed system
2021 - IRG/WP 21-40917
This paper presents mechanical and biological durability properties in soil beg test (soft-rot test) and field test (grave-yard test) against subterranean termite of the wood modified with an aqueous vinylic derivative of glycerol/polyglycerol or maleic anhydride cured in an opened or in a closed system. Wood modification was performed through impregnation of European beech (Fagus sylvatica) with ...
M Mubarok, H Militz, S Dumarcay, I W Darmawan, Y S Hadi, P Gerardin
Results of the resistance of acetylated wood against marine borers at three Italian sites after five years of sea immersion
2022 - IRG/WP 22-10994
The aim of this research was the determination of resistance of acetylated wood against marine decay in use class 5 (EN 335) in temperate sea waters. The resistance of acetylated Pinus radiata (radiate pine) in solid and medium density fibreboard (MDF) panels is compared with that of the untreated Scots pine, radiata pine and other untreated wood of European species such as Fagus sylvatica (Europe...
S Palanti, F Stefani, M Andrenacci, M Faimali, I Guarneri, M Sigovini, D Tagliapietra
Resistance of phenol formaldehyde impregnated beech (Fagus sylvativa L.) LVL against biodegradation in soil contact
2023 - IRG/WP 23-40965
Alternatives to preservative impregnation are emphasized in Germany and other European countries. Even though these treatments significantly improve wood's resistance to decay, they often do not have a beneficial impact on the dimensional stability. One alternative product, which may be used in ground contact for items like poles and railway sleepers, could be beech (Fagus sylvatica L.) laminated ...
M Slabohm, C Brischke, S Bicke, H Militz
Durability of acetylated beech (Fagus sylvativa L.) laminated veneer lumber (LVL)
2024 - IRG/WP 24-30807
Beech (Fagus sylvatica L.) is one of the most abundant hardwood species in Germany and other European countries. It has been demonstrated as suitable raw material for structural products, like laminated veneer lumber (LVL). However, the use of these products is typically restricted to interior applications due to its high susceptibility to weathering and biological attack. Therefore, acetylation w...
M Slabohm, H Militz