Your search resulted in 813 documents. Displaying 25 entries per page.
Bio-Based but Toxic? The Neglected Ecotoxicity of Leachates from Wood Preservatives—A mini-review
2025 - IRG/WP 25-50403
Bio-based Wood preservatives, derived from renewable biomass, are emerging as promising alternatives to traditional synthetic wood preservatives. Research groups all around the world are studying the development of bio-based – environmentally friendly – wo…
A Barbero-Lopez, A Haapala
Probing nanoscale protection mechanisms with x-rays and neutrons
2025 - IRG/WP 25-11083
…to these exposures. This is of particular interest since treatments that are meant to impart resistance can alter these length scales and/or modify their hygroscopic behavior. Yet, our knowledge of how protection treatments, such as chemical modification, alter the wood nanostructure is limited. X-ray and neutron…
N Z Plaza, K M Ohno, J E Jakes, J B O’Sullivan, L Yang
Laboratory evaluation of PA1b, an insecticidal protein extracted from pea seeds (Pisum sativum), as bait active ingredient against the subterranean termite Coptotermes gestroi (Blattodea: Rhinotermitidae) in tropical zones
2024 - IRG/WP 24-11038
…worst pests in tropic areas, economically. Two types of curative methods are used since decades to eliminate colonies that attack constructions: injection of biocidal treatment solutions on wood, walls and soil, and population control using baits. In application of the current regulations, the first technique can…
J Vuillemin, D Messaoudi, P da Silva
X-ray fluorescence microscopy of copper ion distribution in decay of copper-treated wood by Fibroporia radiculosa
2024 - IRG/WP 24-11047
…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 outdoor exposure. For most fungal species, copper can be toxic at elevated concentrations, such as those…
K M Ohno, J Jakes, A B Bishell, L Li, Q Jin, E Maxey
Effects of phosphoric acid and diammonium phosphate treatments on the physical and fire-retardant properties of five selected Nigerian wood species
2024 - IRG/WP 24-20713
…Effects of phosphoric acid and diammonium phosphate treatments on the physical and fire-retardant properties of wood species commonly used in buildings were evaluated. The timber species utilized in this study were sourced from the sawmill sector located in Akure, Nigeria, encompassing Brachystegia laurentii,…
J Owoyemi, T O Akinwamide, O M Ibrahim, E A Iyiola
Surface treatment of cross-laminated timber to improve water repellency and UV resistance
2024 - IRG/WP 24-20716
…methods for assessing the effectiveness of CLT surface treatments. These methods will serve as benchmarks for future research.
M Chen, S Uphill, J Hilsenbeck, A Hughes
Potential of heartwood extracts as wood preservatives combined with linseed oil in 8-year above-ground and in-ground field trials
2024 - IRG/WP 24-20719
…combination treatment failed and, in either test, these treatments were not as effective as commercially used wood preservatives, such as copper naphthenate (CuN) or disodium octaborate tetrahydrate (DOT). Additionally, solid heartwood P. roxburghii stakes and blocks decayed completely and failed due to termite…
M E Mankowski, G T Kirker, B Hassan
Studies on the treatability of selected pine species and corresponding efficacies of a new non-biocidal treatment
2024 - IRG/WP 24-20721
…pine species as a material of interest for impregnation treatments and to study their response when impregnated with a silicone oil composition, which could result and be measured by differences in the resistance towards decay by brown rot fungi. Five concentrations of silicone oil (non-biocidal product) were…
T R da Silva Lins, L Emmerich, H Militz, P H Gonzales de Cademartoni, R J Klizke, M Pereira da Rocha
Phytosanitary heat treatment of wood in a laboratory drying oven and, in a pilot-scale kiln using the house longhorn beetle (Hylotrupes bajulus) larvae as a model
2024 - IRG/WP 24-20722
…manufacturers by proposing ways of improving the heat treatments applied to their products. Experiments were performed in the laboratory and in a pilot-scale kiln on house longhorn beetle (Hylotrupes bajulus) larvae.
In the laboratory, we observed an effect of larva category on the effectiveness of heat…
B Rubio, C L’Hostis, M Montibus, I Paulmier, C Brunet, L Charron, J-P Gaussorgues, C Guiberteau, V Vlahakis, F-R de Cibon, I Le Bayon
Exploring bio-based chemicals in the residual stream from the thermal wood modification process
2024 - IRG/WP 24-30799
…processes for use as valuable additives in bio-based wood treatments. Consequently, co-products from the residual streams might facilitate a more effective waste management strategy.
R Herrera, W Willems, W Pajerski, A Selmanović, A Sandak
Preliminary investigation of the durability and performance of 1,3-dimethylol-4,5-dihydroxyethylene urea (DMDHEU) treated aspen strandboard
2024 - IRG/WP 24-30804
…to fungal decay was increased with increasing DMDHEU treatments, but only against white rot fungi. This work shows that DMDHEU treatment of aspen strands can improve some panel properties, but further experimentation must be done to form panels more effectively with modified strands.
S Johnson, F Kamke, G Presley
Field performance of preserved shakes and shingles
2024 - IRG/WP 24-41000
…heartwood of naturally durable species, using preservative treatments, or both. Through a series of long-term field tests, this paper explores the performance of naturally durable and preserved shakes and shingles exposed in coastal British Columbia, Canada. The data confirm that CCA is a highly effective…
R Stirling, S Kus
Evaluation of vacuum borate treated spruce or pine CLT in an above ground protected test in southern Mississippi
2024 - IRG/WP 24-41001
…samples of either wood species employed in the test. All treatments employed 10 samples for a total of 60 samples in test. Samples were placed in an above ground AWPA E21-18 covered field test in Saucier, Mississippi in 2023. One-year ratings and moisture contents indicated an increase in sample moisture content…
M E Mankowski, A Taylor, G T Kirker
Performance of Douglas-fir cross laminated timber (CLT) subjected to elevated humidity in a ground proximity field test for 6 years
2024 - IRG/WP 24-41010
…soil drenches or spray-on insecticide/fungicide treatments to protect mass timber elements exposed in a high moisture environment but out of direct soil contact was assessed using a modified AWPA ground proximity test established in 2017. Three-ply Douglas-fir CLT pieces measuring 305 x 355 x 105 mm (L x H…
M E Mankowski, J J Morrell, T G Shelton, G T Kirker
Analysis and performance of spruce alternative species and discarded wood for windows production
2024 - IRG/WP 24-50386
…tests included artificial ageing, various coating treatments, exposure to decay and soft rot fungi and the factor approach for estimating the resistance dose (DRd). In the field tests, large scantlings of the tested wood species were exposed to outdoor conditions at three different locations, with real-time…
B Lesar, J Levanič, M Humar, A Treu
Management of invasive West Indian drywood termite in Queensland: Transition from mandatory to voluntary treatment
2023 - IRG/WP 23-11002
…Queensland and its treatment and some of the alternative treatments now available or potentially available to consumers in Queensland to treat C. brevis on a voluntary basis. This forms part of a Queensland Government two-year transition strategy to provide the community, industry, and local government with the…
C Fitzgerald, B Hassan
Reducing successful settlement by shipworm larvae on wood that has been modified using furfurylation
2023 - IRG/WP 23-11017
…biocides have been used to protect timber, however, treatments like CCA (chromated copper arsenate) and creosote are now restricted by legislation in Europe. In response, alternative methods to reduce marine borer attack have been explored, including chemical wood modifications, like furfurylation. This…
L Martin, I Guarneri, S Lande, M Westin, S Cragg
Geopolymer as a fixation method for tannin-based wood preservatives
2023 - IRG/WP 23-30774
…the mass loss caused by C. puteana was reduced in all the treatments but the lowest geopolymer concentration. Leached wood specimens treated with only tannins and only geopolymers had a similar mass loss to controls, but those treated first with combinatory treatment had lower mass loss than controls. These results…
Y M López-Gómez, A Barbero-López, A Haapala
A six-year ground proximity trial of TRU-CORE treatments at Innisfail, Queensland
2023 - IRG/WP 23-30775
…with CCA and commodity Alkaline Copper Quat (commodity-CQ) treatments, all in Pinus radiata. The retentions achieved reflected commercial practice, where higher mean retentions are sought to ensure that the less treatable timbers within a bundle still meet minimum requirements. Two sets of TRU-CORE CQ test specimens…
L Cookson
Performance of a noise barrier with different wood materials – results from a service trial after 25 years of exposure
2023 - IRG/WP 23-30776
…different untreated wood species and preservative treatments. Thus, in March 1996 ten test sections including untreated Scots pine, Norway spruce, European larch, and Scots pine with different preservative treatments were installed. The test sections have been inspected a number of times, the most recent in…
J Jermer, M Westin
Improvement of durability of Scots pine against termites by impregnation with citric acid and glycerol followed by in situ polyesterification
2023 - IRG/WP 23-30777
…to develop completely free biocide preservative treatments using chemical modification.
M Mubarok, J Damay, E Masson, E Fredon, Y S Hadi, I W Darmawan, P Gerardin
Establishing the minimum effective penetration of wood preservatives in the refractory heartwood of E. nitens
2023 - IRG/WP 23-30780
…such as spruce decking suggest that shallow barrier treatments can provide decades of protection; however, it is unclear whether shallow heartwood treatments would perform as well on lower durability hardwoods. Field tests would take decades to produce meaningful results, although accelerated laboratory decay…
J R Vargas, J J Morrell, L Yermán, K C Wood
Recent studies into improved fire retardancy of wood undertaken at Luleå University of Technology
2023 - IRG/WP 23-30784
…to use wood in construction is pushing the need for fire treatments capable of meeting a products service life. However, the use of wood requires the use of fire-retardant treatments, which used to be based on halogens, boron and aluminium salts, though these materials have come under scrutiny in recent years,…
D Jones, C-F Lin, I Kim, E Garskaite, O Karlsson, D Sandberg
How the biochemical activities of polyphenols may be effective for the protection of wood deterioration by termites?
2023 - IRG/WP 23-30789
…to improve durability and sustainability. Conventional treatments against such pests still involve metals salts and synthetic chemical agents. Because of the negative impact from most of these pesticides on the environment, and their toxicity for human health, their application has been severely limited or banned…
J-P Joseleau, D Messaoudi, K Ruel
Potential of plant polyphenol extracts in pesticide formulations against Xylophagous insects
2023 - IRG/WP 23-30790
…chemical product applications are used primarily as wood treatments to protect timber from colonization by subterranean termites. However, due to environmental and health sanitary pressure, it is imperative to find environmentally friendly alternative to synthetic chemical formulations. The insecticide efficacy of…
K Ruel, D Messaoudi, J-P Joseleau