Your search resulted in 692 documents. Displaying 25 entries per page.
Discrimination of five commercial wood preservatives by handheld near-infrared spectrometers and Multivariate Data Analysis
2022 - IRG/WP 22-20686
Nowadays, the recycling potential of wood waste is still limited, because of a lack of reliable lack of a reliable and fast device allowing the discrimination of preservative-treated wood that contains organic or/and inorganic contaminants. The purpose of this study was to set up a methodology, based on a SCiO low-cost handheld NIR spectrometer, and multivariate data analysis (MDA). Spectra was ob...
M Rubini, P Dulucq, B Charrier
Analysis of wooden shingles after seven years of exposure
2022 - IRG/WP 22-20690
Wood is a traditional roofing material in the Alpine regions. In the 17th century, wooden roofing was typically used on more important buildings. Still, today it is predominately used on huts and houses in the hilly regions of northern and north-western Slovenia. Because wooden roofing is expensive, we investigated the possibility of extending the service life of the roofing through impregnation a...
M Humar, B Lesar, D Kržišnik, E Keržič, B Jemec
Comparative study on the efficacy of biobased wood preservative over conventional wood preservatives against fungi and termites
2022 - IRG/WP 22-30761
The current focus of wood preservation research is on developing wood preservatives from natural and environmentally compatible compounds for industrial application. Liquefaction of wood is one of the promising approaches to utilize woody waste where the wood powder is converted into a chemically active liquid with the help of a liquefying agent like phenol, cresol, plant-based solvent as CNSL and...
A Kumar, A John, B N Hazarika
An Update on the Status of Industrial Heavy-Duty Preservatives in Europe
2022 - IRG/WP 22-30762
Creosote has been used for over 150 years for preservation of heavy duty industrial timbers such as railway sleepers, utility poles, and agricultural posts. The regulatory regimes in place today across Europe (eg EU & GB Biocidal Products Regulation (BPR)) require a detailed assessment of the environmental and human health properties of wood preservatives at both the active substance and product l...
S Uphill, H Griffiths, M Giannuzzi, A Hughes
Long-term Performance of Treated Timbers in a Sub-tropical Marine Exposure
2023 - IRG/WP 23-11015
The long-term performance of preservative-treated and modified wood in marine exposures was assessed in Brisbane, Queensland, Australia. This report describes the final destructive assessment of the surviving Australian panels after 11 years of exposure. This site presents the potential for attack by shipworms (likely Bankia spp.), pholads (Martesia striata), Limnoria and Sphaeroma terebrans. Mos...
E L Galore, J Norton, A Zahora
Geopolymer as a fixation method for tannin-based wood preservatives
2023 - IRG/WP 23-30774
This study aims to test if a second step impregnation with a geopolymer solution can fix Colatan GT10, a commercial extract rich in tannins, to wood, reducing their leaching and improving their performance as wood preservatives. Scots pine sapwood specimens of 40×10×5 mm3 were impregnated with Colatan GT10 tannin mix, geopolymer, and as combined treatment Colatan GT10 with subsequent geopolymer ...
Y M López-Gómez, A Barbero-López, A Haapala
Performance of treated Malaysian semantang bamboo (Gigantochloa scortechinii) - field and laboratory durability evaluation
2023 - IRG/WP 23-30788
Field performance of sematan bamboo, Gigantochloa scortechinii was evaluated under the Malaysian tropical climate, along with laboratory evaluation to white-rot fungi and mold. Starch was removed from the bamboo by submerging the bamboo in the river for 6-8 weeks, kiln-dried and cut to 300 mm (L) round bamboo and 25 mm (W) x 50 mm (L) stripe for the field and laboratory test respectively. Bamboo w...
S Lipeh, T Khadiran, Z Jalaludin, M K Anwar U
Identifying compatible waterborne timber preservatives and fire retardants for use in a VPI system: a practical approach
2023 - IRG/WP 23-30796
To enhance the use and suitability of timber in all applications in both exterior and interior settings, timber typically needs to be treated with a preservative and/or a fire retardant chemical. Combining fire retardants with preservatives into a single treatment process has been a long-term aim of researchers in the timber preservative industry because of the significant logistic and economic ad...
R Robinson, S Meldrum
Through-boring to improve the performance of low durability Eucalyptus species for utility poles: 10-year field test results of pole stubs exposed in Southeast Queensland
2023 - IRG/WP 23-40972
An impending shortage of naturally durable hardwood electricity pole timbers in Australia has encouraged investigation of alternatives containing less durable, untreatable heartwood. Through-boring or drilling holes perpendicular to the long axis before treatment, has been used successfully on refractory softwood poles in North America and might have application in Australia. The use of through-bo...
J Norton, L P Francis, J J Morrell
Investigating wood anatomical factors influencing the treatability of refractory southern pine- an imaging approach
2023 - IRG/WP 23-40975
Southern pine sapwood is non-durable, and preservative treatment is necessary to protect it against biological degradation. According to AS 1604.1 2021, timber products must have their sapwood fully treated with preservatives for various applications and hazard classes. However, there is a growing industry concern over the refractory sections of sapwood, which are untreated pockets of wood that do...
M Shirmohammadi, M R Karbaschi, B Hassan, W Leggate
X-ray micro-computed tomography of copper distribution in CA, ACQ and MCA treated wood and changes in microstructure of ACQ-treated southern pine following natural weathering
2024 - IRG/WP 24-20707
We hypothesized that X-ray micro-CT would be able to visualize: (a) the distribution of copper in CA-treated southern pine; and (b) microstructural changes in ACQ-treated southern pine exposed to natural weathering. Small blocks were removed from southern pine samples treated with CA and also southern pine treated with ACQ and MCA. Small blocks were also removed from ACQ-treated boards (flat and p...
D Feng, M Turner, P D Evans
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
The current study assessed the efficacy of heartwood extracts from Tectona grandis, Dalbergia sissoo, Cedrus deodara, and Pinus roxburghii, combined with linseed oil, as protectants for two non-durable wood species against termites and decay fungi. Stakes measuring 45.7 × 1.9 × 1.9 cm and blocks measuring 12.5 × 3.75 × 2.5 cm of the sapwood of southern pine (Pinus sp.) and cottonwood (Populus ...
M E Mankowski, G T Kirker, B Hassan
Comparison of copper leaching from alkaline copper quat and copper compound nanosol-based wood preservative treated wood
2024 - IRG/WP 24-20726
To improve the leaching resistance of copper ion-based wood preservatives, copper compound nanosol-based wood preservatives were developed and its copper leaching characteristics were evaluated. Three types of preservatives (DC1, DC2, DC3) were prepared with different crystallinity and dispersant types of copper compound nanosol, and the copper concentration was adjusted to be the same as that of ...
Y-S Choi, S-M Yoon, J O Kim, J-G Kang, J-G Park
Field performance of preserved shakes and shingles
2024 - IRG/WP 24-41000
Wood shakes and shingles are used in applications where they are at risk of decay, either in sidewall (UC3.1) or roofing (UC3.2) applications. Material durability may come from using the 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...
R Stirling, S Kus
Levels of chromated copper arsenate in aged radiata pine vineyard posts
2024 - IRG/WP 24-50389
At the Centre for Timber Durability and Design Life, Australia a cooperative project is underway with Forest and Wood Products Australia, supported by a consortium of timber producers, chemical suppliers and timber users to identify alternative pathways for treated timber and EWP’s. Under this initiative, we are focusing on establishing the current and forecasting future volumes of treated timbe...
T Singh, T Yi, P Mitchell, J Norton
Copper migration from preservative-treated Douglas-fir decking: models vs laboratory leaching data
2024 - IRG/WP 24-50390
The ability of a model to predict copper migration from Douglas-fir treated with organic metallic substances into a freshwater slough was evaluated against data generated through simulated overhead leaching. The model predicted very high loadings of ammoniacal copper zinc arsenate, alkaline copper quaternary or copper azole that had the potential to impact water quality while data from the exper...
M J Konkler, G Presley, J J Morrell, T Singh
Quantitative assessment of wood preservative emissions to waterways
2024 - IRG/WP 24-50393
The Organisation for Economic Co-operation and Development (OECD) Emission Scenario Document (ESD) for Wood Preservatives provides methods to quantify the release of active substances from treated wood for various scenarios including sheet pilings in a flowing waterway (OECD 2013). The ESD is used for environmental risk assessment of wood preservatives according to the Biocidal Products Regulation...
K J Rader, R Carbonaro, C Mackie