Your search resulted in 824 documents. Displaying 25 entries per page.
Effectiveness of MOQ® OX 50 (CCB-Oxide) wood preservative – Part 2: Field tests
2008 - IRG/WP 08-30483
MOQ® OX 50 is a chromated copper borate preservative known around the world as CCB. In Brazil, this product is the only CCB-oxide type preservative with fungicide and insecticide properties registered at the Brazilian Institute for the Environment and Renewable Resources (IBAMA) that complies with the requirements of the Brazilian and European markets for preserved wood. For over five decades, s...
A Gandolfi Jr, C Salvela, D R Macedo, J M Vidal
Biological Performance of micronized copper wood preservative formulations in field and laboratory tests
2008 - IRG/WP 08-30488
Micronized Copper wood preservative formulations with different co-biocides were exposed to brown rot fungi in an 8-week AWPA E10 soil block decay test and two AWPA E7 ground-contact decay tests in Hawaii. The micronized copper formulations performed well against decay at or above the AWPA UC3 and UC4 retentions stipulated by the ICC-ES. Micronized copper preservatives performed comparably to a ...
G M Larkin, J Zhang, D L Richter, R J Ziobro, P E Laks
Laboratory and field exposures of FRT plywood: Part 1. Physical test data
2008 - IRG/WP 08-40426
Our understanding of the laboratory induced degradation with fire retardant systems is currently limited since we are unable to correlate laboratory steady-state experiments with actual in-service field degradation. Current model studies have generally been limited to isothermal rate studies with selected model FR chemicals. Other factors also play a major role in the degradation of FR-treated woo...
H M Barnes, J E Winandy, C R McIntyre
Field Stake Performance of Parallel Strand Lumber Treated with Waterborne Copper Naphthenate
2008 - IRG/WP 08-40435
Wood and wood products have been considered a premium building material for residential and industrial structures for many centuries. More recently, structural composite lumber (SCL) products have played an increasing role in satisfying the needs of the building industry. However, both wood and wood composites are naturally biodegradable materials which require enhanced durability when used in ce...
G P Merrick, M H Freeman, J A Brient
Service Life Prediction of Wood Claddings by in-situ Measurement of Wood Moisture Content: Status after 5 years of Outdoor Exposure
2009 - IRG/WP 09-20401
The Danish Technological Institute is in co-operation with industry partners running a project aiming at predicting the service life of different wood protecting systems. The project focuses on examining the moisture reducing effect of different protecting systems for timber claddings and the ability of these to maintain the appearance of the surfaces, when the wood is used in service class 3 (EN ...
E Tang Engelund, B Lindegaard, N Morsing
Accelerated H3 above-ground decay trials in Australia
2009 - IRG/WP 09-20411
An above-ground H3 fungal field trial was installed at five sites (3 in Australia, 2 in New Zealand), with the aim of finding a method that would shorten the time required for evaluating new preservatives and protection systems. One-quarter of the H3 preservative retentions were mostly installed, as first results suitable for registration occur when these reach 70% soundness. Chemical analysis of ...
L J Cookson, J Carr
A rapid microscale assay for determining growth of wood inhabiting fungi against Lactobacillus metabolites
2009 - IRG/WP 09-20412
Lactobacillus sp. are well known for their ability to produce secondary metabolites with potent inhibitory activity against a wide range of bacterial species and there is increasing evidence to support their antifungal activity. These metabolites are often screened in laboratories using microscale 96-well plate optical density assays. The objective of this study was to develop an optical density a...
D O’Callahan, T Singh, I McDonald
Review of candidate graded particle barrier testing methods in Australian Standard (AS 3660.3 – 2000): Assessment criteria for termite management systems
2009 - IRG/WP 09-20417
The Australian Standard (AS. 3660.3 – 2000) for assessment of candidate graded particle termite barriers is reviewed and suggestions for amendments are made. Areas requiring amending in light of current biological knowledge involve the inclusion of proprietary or patented systems rather than generic types; selection of test termites in the genus Coptotermes; duration of test periods; and inadequ...
J R J French, B M Ahmed (Shiday), B L Schafer
Analysis on dynamics of basidiomycetes in decayed wood by a method using non-specific amplification of DNA
2009 - IRG/WP 09-20426
A combination of non-specific amplification of DNA by Phi29 DNA polymerase and specific amplification of the internal transcribed spacer (ITS) region of ribosomal DNA (rDNA) by polymerase chain reaction (PCR) was applied to elucidate the ratio of basidiomycete species inhabiting decayed wood from an outdoor bench. After more than 8 hours incubation with Phi29 DNA polymerase, concentration of DNA ...
T Wada, K Igarashi, M Samejima
Laboratory and field evaluation of Laminated Strand Lumber treated with Borogard® ZB against termites
2009 - IRG/WP 09-30498
A laboratory bioassay and subsequent field trial was undertaken to determine the termiticidal effectiveness of a Laminated Strand Lumber (LSL) composite when treated with Borogard® ZB. The bioassay and field trial were conducted against two of Australia’s most economically important species of termite, Mastotermes darwiniensis and Coptotermes acinaciformis. Against both species of termite, LSL ...
D K Scown and J W Creffield
Effectiveness of a superficial treatment of bifenthrin to protect softwood framing from damage by subterranean and drywood termites in Indonesia
2009 - IRG/WP 09-40443
Various experimental testing procedures were undertaken in Indonesia to determine the effectiveness of a superficial (envelope) treatment of bifenthrin to protect softwood framing from damage by two species of subterranean termite (Macrotermes gilvus and Coptotermes curvignathus) and one species of drywood termite (Cryptotermes cynocephalus). Lengths of framing (Pinus radiata sapwood) were commerc...
P Sukartana, J W Creffield, A Ismanto, N E Lelana
Environmental Emission of Wood Preservatives: Interpretation of Data Relevant to BPD Risk Assessments
2009 - IRG/WP 09-50259
The risk assessments for the use of wood preservatives proposed by the OECD and used under the Biocidal Products Directive (BPD) (98/8/EC) require the derivation of leaching rates for active substances. These rates are to be used as input data in to agreed exposure scenarios. The leaching rates can be derived from laboratory testing and from field testing. The relationship between laboratory and f...
D G Cantrell
Rapid Microwave-Assisted Acid Extraction of Metals from Chromated Copper Arsenate (CCA)-Treated Southern Pine Wood
2009 - IRG/WP 09-50262
The effects of acid concentration, reaction time, and temperature in a microwave reactor on recovery of CCA-treated wood were evaluated. Extraction of copper, chromium, and arsenic metals from chromated copper arsenate (CCA)-treated southern pine wood samples with three different acids (i.e., acetic acid, oxalic acid, and phosphoric acid) was investigated using in microwave reactor. Oxalic acid wa...
Bin Yu, Chung Y Hse, T F Shupe
A fast and economic method to produce grey wooden surfaces for decking and cladding: preliminary results
2009 - IRG/WP 09-40474
Uncoated wood is commonly used in France for cladding and decking to minimise maintenance. However wood surfaces progressively turn grey due to exposure to sunlight and water. This grey colour develops after several months depending on the wood species and the exposure: in the northern hemisphere surfaces facing south and west are most exposed and turn grey more rapidly than those facing north and...
L Podgorski, V Georges, I Garmendia, B Sánchez Sarachu
Utilidad práctica de mini estacas en ensayos de campo
2008 - IRG/WP 08-20395
For testing chemicals for the wood against degradation agents of biotic, known as preservatives, both testing in the laboratory and in the fields are used. Field trials (Cemetery stakes) are often accepted as more "real" whose frequency of observation is set to more or less a year in temperate climates and six months or less in tropical situations, taking into accounts the aggressiveness of the so...
O Encinas, J V Puentes, N K Sarmiento, N Mora
Observations on colony collapse in Reticulitermes flavipes (Kollar) in laboratory and field settings in Wisconsin
2010 - IRG/WP 10-10709
Parallel strategies were designed to eliminate Reticulitermes flavipes (Kollar) from a field site in Endeavor, Wisconsin and a simulated field test setup of approximately 20,000 workers in the laboratory. Indoor and outdoor colonies of R. flavipes were baited with commercial cellulose monitoring stations and rolled cardboard stations. If the commercial cellulose baits were attacked, they were repl...
F Green III, R A Arango, G R Esenther
Seasonal shifts of fungal community structure at the interface of treated or untreated wood and soil
2010 - IRG/WP 10-10721
Many wood species are degraded rapidly in soil by the fungal community. In order to preserve wood and structures in which it is used, chemical preservatives are used. Little is known about the interaction of treated wood and the surrounding soil fungal community. For this work, presented at IRG 41, wooden specimens (Pinus sylvestris sapwood, sizes 25 mm x 50 mm x 500 mm (longitudinal)) were treate...
M Noll, I Stephan
Natural Durability of Fence Poles from Fourteen Semi-Arid Land Species after Six-Month Exposition
2010 - IRG/WP 10-10724
A sample of thirty fence poles from each of fourteen tree native species from Northeast Mexico were tested in ground contact in a wood-cemetery area located in Linares, Nuevo Leon, Mexico. The samples were submitted to six treatments (control, debarked, chemical treated, used cooking oil, thermal and creosote) and randomly distributed in five blocks. The effectiveness of using a bark gauge tool â€...
A Carrillo, F Garza, V Bustamante, S Sandoval, H Villalón
Decay Resistance of Maple (Acer Insigne) Wood Against White Rot
2010 - IRG/WP 10-10740
In this study, the decay resistance of maple (Acer insigne) in natural state and treated with ACC (Acid copper chromate) was investigated against the white rot fungus (Coriolus versicolor). ACC is a kind of water borne preservatives that was used in this study for treating specimens under vacuum and pressure (Bethell procedure) with 3 percent concentration. In conducting mentioned evaluation, koll...
V Tazakor Rezaei
Glued laminated poles - Progress report after 30 years testing
2010 - IRG/WP 10-20427
In 1979 a number of glued laminated poles treated with CCA and creosote were placed in a greenhouse at Uppsala, at the Simlångsdalen test field in southern Sweden and in a power lane in Vuollerim in northern Sweden in order to study their resistance against biological degradation.
The tests have shown that the best performance will be obtained if each lamination is treated with a water-borne pre...
Ö Bergman, J Jermer
Diagnosis of failures in wood beams from historical house in Banská Štiavnica – Relations between ultrasonic measurements and bending properties
2010 - IRG/WP 10-20437
Various degrees of rot and other damages in ceiling beams with dimensions of 6500-8800 x 160-200 x 240-310 mm (length x height x width) situated in one historical bourgeois house in the UNESCO town Banská Štiavnica, Slovakia were determined visually and by the PUNDIT-plus ultrasonic device. Subsequently, for seventeen of the most bio-damaged fir (Abies alba Mill.) beams chosen for exchange were ...
L Reinprecht, M Pánek
Service life prediction of wooden components – Part 1: Determination of dose-response functions for above ground decay
2010 - IRG/WP 10-20439
Scots pine sapwood (Pinus sylvestris L.) and Douglas fir heartwood (Pseudotsuga menziesii Franco) specimens were exposed in double layer field trials at 24 different European test sites under different exposure conditions (in total 28 test sets). The material climate in terms of wood moisture content (MC) and wood temperature was automatically recorded over a period of up to eight years and compar...
C Brischke, A O Rapp
Stress wave and visual analysis of treated and non treated fence posts after 15 years in field test
2010 - IRG/WP 10-20449
Wood preservation may play an important role in protecting tropical rain forest. Basically, it can reduce pressure on natural resources by increasing wood durability. Field tests are conducted to simulate final use of woods under different environmental conditions. Visual analysis, non destructive testing, and non destructive evaluation techniques were applied to assess wood resistance and chemica...
A Florian da Costa, R Faustino Teles, J Costa Gonçalves
Development of microbiological test methods for the wooden packaging of foodstuffs
2010 - IRG/WP 10-20453
Whereas different sampling methods already exist for analysing contaminated surfaces or packaging made of plastic or paper, there is no methodology that enables the sampling and quantification of microorganisms in packaging made of wood. The objective of this study was to compare the most commonly used microbiological methods and to develop a reliable quality control test adapted to wooden packagi...
I Le Bayon, H Callot, M Kutnik, C Denis, A-M Revol-Junelles, J-B Millière, M Giraud, M Gabillé, N Passédat
Improved analysis of field test data related to service life prediction of tropical wood species
2010 - IRG/WP 10-20458
Long field trials of wood in ground contact give valuable data on the natural durability of the material. The European Standard EN 350 gives guidance on how to perform these durability classification, but is limited to the use of averages of in-service life of a set of specimens compared to a reference set. Starting from a database of visual assessment of field stake testing, it is possible to obt...
J Van den Bulcke, A Wong, Ling Wang Choon, Yoon Soo Kim, J Van Acker