Your search resulted in 276 documents. Displaying 25 entries per page.
The role of chromium in wood preservatives under BPD - a review and the current situation in Europe
2008 - IRG/WP 08-30468
Already during the IRG-meeting in Trømso a paper was presented to give an overview regarding the situation on chromium (JÜNGEL et al. 2006). Already in that year there was an increased attempt to achieve a science-based correct and harmonised solution in Europe regarding the chromium-question by the European Commission. Nevertheless the competent authorities (CAs) and the industry were similarly...
P Jüngel, S Hellkamp
Soft Rot Determines Service Life of L-joints with Low Borate Loading
2008 - IRG/WP 08-30470
As part of a research program on the potential use of borates by the Canadian wood products industry, Forintek set up an L-joint test of untreated and borate-diffusion treated hem-fir (western
hemlock and amabilis fir) in 1990. The treated material had a low initial retention of only 0.2% boric acid equivalent and analysis after 5 years revealed no detectable borate close to the tenon. Nev...
P I Morris, J Wang, J K Ingram
COST Action E37. Sustainability Through New Technologies For Enhanced Wood Durability -
2008 - IRG/WP 08-40417
The main overall objective of the Action was to concentrate on the contribution of wood durability to sustainability through the development of systems for quality assurance and performance classification of modified wood and wood products as alternatives to wood treated with traditional preservatives. By this means it seeked to improve and consequently to increase the cost-effective use of compon...
R-D Peek, J Van Acker
Control de calidad eficiente de proteccion superficial sobre madera
2008 - IRG/WP 08-20397
Quality control is important to assure efficient protection of wood surfaces. When wood is exposed to the environment, it degrades due to weathering or environmental factors alone. Aging tests are utilized to test coating products. Quality control techniques are performed on exposed products according to standardized methods (NCh, ASTM, ISO, DIN, EN, FTMS, NTF, NBINT, or equivalents). Certified l...
A M Fernández S
Laboratory Studies on Copper Availability in Wood Treated with Soluble Amine Copper and Micronized Copper Systems
2008 - IRG/WP 08-30489
A laboratory method has been employed to investigate the level of soluble copper in wood treated with various copper-based preservative systems, such as micronized copper (particulate copper) and amine copper solutions. This report describes the methodology and preliminary results on determination of the soluble copper in the treating solutions and the treated wood by these systems, as well as th...
L Jin, P Walcheski, A Preston
Degradation of wood veneers by Fenton’s reagents: effects of low molecular weight phenolic compounds on hydrogen peroxide decay and tensile strength loss
2009 - IRG/WP 09-20400
Pine wood (Pinus sylvestris) veneers strips were incubated in acetate buffer containing hydrogen peroxide and iron to mimic mechanisms of brown rot decay and assess the degradation of cellulose through analysis of the tensile properties of the decayed wood. The tensile properties of thin wood strips treated with Fenton system reagents or precursors were determined and correlated to weight loss as ...
Yanjun Xie, R Well, Zefang Xiao, B Goodell, J Jellison, H Militz, C Mai
Vacuum drying of European oakwood: Color, chemistry and anti-oxidant potency of wood. Improving appearance in forest value added products
2008 - IRG/WP 08-40432
In hardwoods used for decorative and appearance purposes, wood colour is one of the most important factors of wood quality; in addition colour is related with durability and biological decay of wood. Wood discolouration during drying is mainly affected by heat, light, physiological reactions, combinations of reactions, biochemical and chemical reactions, and micro-organisms attack. In freshly fell...
S Sandoval, W Jomaa, F Marc, J-R Puiggali
The Promotion of Timber and Timber Product uses in China - Government's Role in Regulation and Standardization
2009 - IRG/WP 09-20424
Chinese Government always pays special attention to resource and environmental issues, therefore, resource saving and environmental protection are part of the basic state policies. This paper provides a brief summary of the key policies which guide the practices in promoting timber conservation and efficient utilization in order to meeting social demands of the wood uses. In the paper, the develop...
Liu Nengwen
Fungal decay resistance and durability of wood products made from borax-impregnated wood and bonded with corn starch and tannin adhesive
2009 - IRG/WP 09-30494
At present, the production of wood composites mainly relies on the petrochemical-based and formaldehyde-based adhesives such as phenol formaldehyde (PF) resins and urea formaldehyde (UF) resins, which are non-renewable and therefore ultimately limited in supply. This paper concerns the decay resistance of wood products bonded with a new, environment-friendly adhesive derived from abundant and rene...
A Moubarik, A Pizzi, A Allal, F Charrier, B Charrier
Which are the best painting methods for the beech wood products protection?
2009 - IRG/WP 09-40477
Beech wood (Fagus Sylvatica L.) is one of the most important species of the wood in Kosovo. About 33% of the trees in our country are beech wood. The wood products in Kosovo are from the beech wood. The color difference between red heart wood and white wood of the beech is significant. The main problem for the wood companies in our country is that they haven’t adequate protection against weather...
A Bajraktari
Future Directions in Wood and Engineered Wood Products Research in China
2009 - IRG/WP 09-40479
This paper has summarized the research advance of basic wood science and engineered wood products in the 20th century in China and introduced the research advance and directions of basic wood science, engineered wood products and the extensive researches based on the basic wood science such as wood chemical rheology, wood fractal analysis, wood environmental science and nano-wood material etc in t...
Guangjie Zhao
Fungal Attack on Lignin and Cellulose: Elucidation of Brown- and White-Rot Mechanisms Comparing Biomimetic and In-Vivo Degradation Patterns
2010 - IRG/WP 10-10714
This paper examines research and hypotheses that have been developed over several years on wood degradation mechanisms. This information is combined with new data and analyses to explain why wood decay patterns caused by brown-rot fungi and specific types of white-rot fungi are different. New data, including work with both biomimetic studies on low molecular weight compounds, degradative enzymes, ...
V Arantes, B Goodell, A M F Milagres, Yuhui Qian, T Filley, J Jellison, S Kelley
Simulation and Investigation of Wood Degradation by Erosion Bacteria in Laboratory Experiments
2010 - IRG/WP 10-20431
A Microcosm experiment was successfully set up to establish, monitor and manipulate bacterial wood degradation under low oxygen conditions. Sound pine sticks were placed in waterlogged sediment from a heavily decayed pine pile foundation site in Amsterdam. The system was subject to different gassing treatment regimes in order to investigate the role of oxygen in the bacterial degradation process o...
J Gelbrich, E I Kretschmar, N Lamersdorf, H Militz
Methods for Studying Penetration Depth of Wood Protection Products
2010 - IRG/WP 10-20432
EN 152 is an accepted standard in Europe for measuring how deep a wood protection product penetrates into the surface of treated pine wood. The method has provided consumers with a wide assortment of products that meet the specifications outlined in the standard. Because the test takes 8 or more months to carry out, artificial ageing procedures have evolved in order to standardize and speed up the...
K Hansen, L Sites, D D Nicholas
DNA-based tools for rapidly detecting, quantifying and monitoring ophiostomatoid fungi on beetles, in trees and wood products
2010 - IRG/WP 10-20450
Approximately half of the trees harvested for commercial purposes are lost because of native or introduced insects or insect-vectored microorganisms. Ophiostomatoid fungi, which are well adapted to dissemination by insects, include ~140 species of saprobes and pathogens. They are present worldwide, have high economical impact and many are subject to quarantine regulation. Thus, it is necessary to ...
L Khadempour, Young Woon Lim, S Massoumi Alamouti, C Breuil
Evaluation of formulation type on the efficacy of bifenthrin as a glueline termiticide for veneer based wood products
2010 - IRG/WP 10-40486
Field trials were carried out in Australia on Coptotermes acinaciformis to evaluate the efficacy of various bifenthrin formulations. One trial tested plywood made by Zelam at their research facility in New Zealand and compared three emulsifiable concentrate formulations (EC), a suspension concentrate (SC) and an encapsulated formulation (CS). A second trial compared laminated veneer lumber (LVL)...
P Lobb, A Siraa
The situation of wood preservation in Italy
2010 - IRG/WP 10-40502
This document summarizes the situation of wood preservation in Italy at the present time. Information on the Italian climate and biological hazard of wood commodities are extracted and updated from a document of Gambetta et al., 1985. Data about wood production and industry are obtained by INFC, National Inventory of Forest and Forest Carbon Sink, by ISTAT, the National Institute of Statistics and...
E Conti, S Palanti
Ecological methods and products for wood protection used for restoration and conservation of built heritage cultural assets to increase natural durability and duration of exposure in open air museums
2010 - IRG/WP 10-40506
Wood is a perishable material, hygroscopic and fuel, which cause attention to selecting the wood species that is going to be exhibited in relation to humidity and soil. With variable depending on its humidity and moisture from the atmosphere or soil, wood is a good living environment for fungi and insects, but suffer biodegradation processes and dimensional changes. Observations over time on wood ...
M Pruna, D Purice, D Dumitru Copacean
Climate change and wood protection, increasing demand of long life wood products and decreasing production of treated wood
2010 - IRG/WP 10-50269
Several new topics related to wood protection sector has appeared in Japan, as the awareness of climate change becomes bigger and bigger. The “Basic act for housing (2006)” and the “Long-life housing promotion act (2009)” were enforced to form a safe and high quality housing stock and to form a long-service-life housing respectively. Despite of the favorable background for wood protection ...
K Yamamoto, H Kato
Riverbed Construction Technology using Thinned Timbers for Carbon Dioxide Sink in Korea
2010 - IRG/WP 10-50271
The Climatic Change Convention is a big burden in limiting the energy usage like the blood of economy. The certification standard about the carbon storage of timbers after harvesting them is expected to be an important role in setting the goal for future reduction of the green house gas(CO2). The extension of a timber's life span through its preservation is one of technologies for carbon sink...
Dong-heub Lee, Won-Joung Hwang
Chapter 7 - Treatment processes of bamboo
2010 - IRG/WP 07-10635-07
For adequate penetration and retention of preservatives in woody
bamboos at green, dry, solid and sliced conditions different possible
and applied treatment processes have been described along with
their classifications. The treated bamboo can be used as building
materials; the sufficient treatability ensures its long-term best
utilization at ground contact and indoor. All the processes descr...
A K Lahiry
Determination of Equilibrium Moisture Content (EMC) of wood in the neighboring Countries of Iran
2011 - IRG/WP 10-40540
The mean value of annual temperature and relative humidity of 33 cities in Azerbaijan, Armenia, Turkmenistan, Afghanistan, Pakistan, Oman, United Arab Emirates, Bahrain, Qatar, Kuwait, Iraq and Turkey were determined using climatic data of the past 11 years.
The EMC values were calculated using the Hailwood-Horrobin sorption model and its annual fluctuation, together with Temperature and relati...
A A Enayati, H Z Hosseinabadi
Investigating extraction of bifenthrin from composite wood products
2011 - IRG/WP 11-20467
Bifenthrin is added to resin prior to lay-up of plywood and laminated veneer lumber to provide termite protection. Analysis of this chemical in resins can be challenging. The potential for using ground wood in place of sawn material to recover bifenthrin was investigated using laminated veneer lumber composed of Douglas-fir veneers analyzed by three laboratories. Although the results differed amo...
J J Morrell, L Bell, J Norton, C Shaw
Phytosanitary standards and the potential for acceptance of chemical treatments as a phytosanitary measure
2011 - IRG/WP 11-30558
Regulations governing international trade in forest products must balance the economic and social benefits of trade with the potential risks of transporting invasive species. The International Plant Protection Convention (IPPC) is an international agreement intended to manage this process. It develops international phytosanitary standards (ISPMs) that are recognised by the World Trade Organisation...
A Uzunovic, R Stirling, J J Morrell, P I Morris, C F Schauwecker
The potential of propolis and other naturally occurring products for preventing biological decay
2011 - IRG/WP 11-30575
The potential of using a range of naturally occurring plant extracts and propolis from bee hives for enhancing the durability of timber in service as well as helping with the conservation of archaeological timbers is considered in this paper. Results reported demonstrate that there is some degree of protective effect noted, suggesting a viable treatment option might be developed based on a deeper ...
D Jones, N Howard, E Suttie