Your search resulted in 2180 documents. Displaying 25 entries per page.
Application of nano metal fluorides against termites
2019 - IRG/WP 19-30733
Recent research has shown that fluorides such as NaF have potential as a wood preservative against termite attack (Pan and Wang, 2015). However, NaF has high leaching susceptibility because of its solubility (40 g/l ) which can reduce its efficacy over long term. Metal fluoride nanoparticles such as MgF2 and CaF2 present a viable alternative to water soluble fluoride-based wood preservatives as th...
S M Usmani, K Klutzny, Y de Laval, R Plarre, D McMahon, I Stephan, T Hübert, E Kemnitz
Relative efficacy of various oxine copper formulations against brown-rot fungi
2019 - IRG/WP 19-30741
This paper investigates the relative resistance of three different oxine copper formulations (oil-borne, water-borne, water-borne with pH-adjustment) as a preservative treatment for wood against brown-rot fungi. Impregnated southern pine sapwood cubes were exposed to R. placenta and G. trabeum cultures in a soil-block test. After eight weeks, the weight losses of the cubes were examined in relatio...
M Petruch, J Lloyd, A Taylor
Alternative fumigants to Methyl Bromide for wood products: Review of the development and preliminary tests of Ethane Dinitrile (EDN) in Canada
2019 - IRG/WP 19-30743
This paper reviews recent developments and updates in the search for alternative fumigants to ozone-depleting methyl bromide, for wood products fumigation. The absence of alternative treatments may result in significant market disruption if further restrictions on methyl bromide are imposed. This paper reviews key challenges and key attributes of an ideal fumigant and also the status of standardis...
A Uzunovic
The development of a suitable fire retardant for Radiata pine and other species
2019 - IRG/WP 19-30744
The use of fire retardant chemicals, with the overarching aim of creating a safer environment is not a new one, however it is generally under-developed and is often afflicted with an image of environmental and health issues and misperceived high costs. There is an ever-increasing need and desire for effective fire retardancy in timbers to inhibit or suppress the combustion process. This is paramou...
B R Derham, M R Fortune
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
Effect ofNano-Copper Oxide on Decay Resistance of Pistachio Twig-Plastic Composite
2019 - IRG/WP 19-30750
The goal of our study was to investigate the decay resistance of pistachio twig-plastic composite treated with nano-copper oxide against the white rot fungus Trametes versicoloer and the brown rot fungus Coniophora puteana. For this purpose, wood–polypropylene composites (WPCs) containing different loadings of nano-copper oxide, namely 0, 1, 2 and 3 percent (W/W), were made from pistachio (Pista...
M R M Farahani,S Pourabdollah
Suggestive remarks for designing of experimental samples and trial devices to treat wood by pre-vacuumed immersion method
2019 - IRG/WP 19-40862
This study was conducted to test the impregnability of wood material according to the pre-vacuumed immersion process and to reveal the usability of cylindrical (plug) samples in impregnation experiments in addition to the cuboid or cubic samples. In this context, cuboids were prepared 30 mm in length, 20 mm in width and 20 mm in thickness, whereas plugs were prepared radially and longitudinally wi...
I Usta
Treatability of native and exotic alternative timber species
2019 - IRG/WP 19-40864
The service life of moderately durable species can be extended significantly if the challenge of effective treatment of refractory wood species can be overcome. Along with preservative effectiveness, the performance of preservative in treated wood depends on factors such as retention and penetration in treated wood, the wood anatomy, the uniformity of penetration and micro-distribution within the ...
D Page, T Singh
Color change of timber exposed outdoors - Influence of season exposure test starts
2019 - IRG/WP 19-40865
For the client the material and color of the exterior wall are important, because they affect the impression of the building [1]. However, discoloration of the exterior wall begins as soon as the building is completed, by various factors such as rainfall. We tried to quantitatively evaluate the changes of the exterior wood, and to organize the influences of climate conditions, in order to use the ...
K Usami, H Ishiyama
Charring of Norway spruce wood surface – an alternative surface modification technique?
2019 - IRG/WP 19-40870
Charring is an old wood surface treatment technique, mainly performed on wooden façade elements with the aesthetical aims, but also with the purpose of protection. This flame treatment method can be grouped into heat treatment processes. Below the top charred layer of damaged wood there is a layer which is during flame treatment exposed to high temperatures in anoxic or semi-anoxic conditions. Th...
M Petric, M Pavlic, J Zigon
The impact of additional interior layers to the moisture dry-out and mould growth risk of CLT walls
2019 - IRG/WP 19-40876
The objective of this study was intended to determine the maximum allowable initial moisture content for CLT walls having both exterior and interior thermal insulation. A laboratory test was conducted, for which four test walls with two different insulation solutions and two different initial moisture contents were built. Based on the test results a simulation model was configured and simulations ...
V Kukk, J Kers, T Kalamees
Promoting Commercially Available Epoxy Resins for Non-biocidal Wood Preservation
2019 - IRG/WP 19-40877
Commercially available epoxy and polyamine resins were evaluated with the aim of developing new non-biocidal wood preservation treatments. A simple method allowing the impregnation of wood by vacuum double impregnation followed by a curing process was developed for two reference species, beech Fagus sylvatica and Scots pine Pinus sylvestris. The tested products were evaluated for their ability to ...
P Poveda, M Mubarok, S Dumarcay, M Montibus, I Le Bayon, M Kutnik, P Gerardin, F Simon
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
Alternative products enhancing dimensional stability comparing to conventional treated products in Japan
2019 - IRG/WP 19-40885
The Act on the Promotion of the Utilization of Wood in Public Buildings (2010) in Japan has made a new stream of the utilization field of timber from housing constructions to larger scale non-housing constructions. After the act, the performance of dimensional stability in preservative treated products becomes more important factor than before. Therefore, various technologies have been developed, ...
K Yamamoto, D Tezuka, Y Sugai, S Maeda, I Momohara
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
Study on Nailed Joint with Iron Contamination. Part2: Elucidation of the Occurrence Condition of Iron Contamination
2019 - IRG/WP 19-50350
In recent years, efforts towards wooden buildings are progressing in Japan. And many woods are used in various places. However, various problems have also occurred in wooden buildings. One of the problems is iron contamination which appears when wood and metal chemically react. At present, tree species that are prone to iron contamination and components that cause iron contamination are clarified....
D Nakano, R Nakano, H Ishiyama
Knowledge exchange and transfer from academia to industry in the field of wood protection research – Activities of the IRG-WP Communications Committee
2019 - IRG/WP 19-50354
The International Research Group on Wood Protection (IRG) was founded in 1969 as a structured group of like-minded scientists and technologists focused on generating knowledge of the science of wood deterioration, and novel solutions to provide sustainably and environmentally responsible products for the protection of wood-based materials. The primary function of the IRG is to provide opportunitie...
F Latorre, B Abbott, C Brischke, M Humar, D Jones, E Larnoy, L Nunes, A Preston, T Singh
The effect of treatment method on CCA efficacy in Corsican pine
1992 - IRG/WP 92-3723
As part of a study into the influence of application method on preservative efficacy Corsican pine (Pinus nigra) samples (50 x 50 x 400 mm³) were treated with a CCA formulation using Bethel, Steam/Bethel or Lowry processes. Full penetration of the preservative at a gross level was confirmed using a copper disclosing reagent. The preservative was allowed to fix and then samples were converted into...
P R Newman, R J Murphy
Preventive effectiveness of petrol derivatives against blue-stain fungi
1992 - IRG/WP 92-3716
A possible application of fractions obtained on petrol pyrolysis is their use as a wood preservative against wood-decay and sap-stain fungi. From two of these fractions were prepared three different products (ST, STL and SST). The aim of this work has been the possibility of utilizing these products in the treatment of wood used for external joinery, determining their effectiveness against blue-st...
A M Navarrete, M T De Troya, E Sanchez, A Guijarro
A reliable spot test for TCMTB in wood
1992 - IRG/WP 92-2391
Test specimens of slash pine (Pinus elliottii) and spotted gum (Eucalyptus maculata) were treated with aqueous emulsions of Busan 30WB and Busan 31, containing the fungicide TCMTB (2-(Thiocyanomethylthio)benzothiazole), or with solutions of TCMTB in toluene. These and matching untreated specimens were subjected to a wide range of procedures in an attempt to reveal TCMTB penetration patterns. Most ...
D E Ferlazzo, M J Kennedy
Field study: Wood degradation pattern in buildings and utility poles in tropical climates of Nigeria
1992 - IRG/WP 92-1521
The paper is the result of five years field study of wood degradation patterns in three ecological forest zones (Guinea Savannah, Tropical rain forest and mangrove forest zones, respectively). It involved 800 residential buildings and 700 electric overhead transmission poles. The methodology used was a modified Eslyn (6) test. A high rate of Ascomycetes and Basidiomycetes attack especially on the ...
E O Onuorah
Evaluation of the Virulence of the Termite Species Occurring in the French Tropical Overseas Territories
2018 - IRG/WP 18-10913
The French tropical overseas territories are strongly affected by termites’ activity, which is especially devastating because the species encountered there are among the most virulent in the world. That is why in these regions it is particularly important that producers and users of wood-based products are provided with materials and preservative products whose durability and efficacy has been t...
M Kutnik, I Paulmier, J Vuillemin
Liquefied wood polyols: Ecofriendly bio-based preservative for sustainable protection of wood from Termite attack
2018 - IRG/WP 18-10916
The major problems encountered in both indoor and outdoor utilization of wood are biological decay due to termite. The modification of wood with liquefied wood polyols has been found to be effective against termite attack. The liquefaction of wood aims to utilize woody wastes which are being generated during primary and secondary processing of wood in wood based industry. One of promising approach...
A Kumar, A John, T S Mehra, A K Pandey, S Singh Chauhan
Termite resistance of wood-plastic composites made with acetylated wood flour, coupling agent or zinc borate
2018 - IRG/WP 18-10917
There is little published scientific literature on the laboratory or field testing of wood-plastic composites (WPC) against termite attack. Therefore, the objective of this research was to investigate termite resistance (both laboratory and field) of 5 different extruded WPC blends of 50% western pine wood flour (WF) and high-density polyethylene (HDPE), and untreated pine solid wood. The study in...
R E Ibach, Y S Hadi, C M Clemons, S Yusuf