Your search resulted in 301 documents. Displaying 25 entries per page.
The biodegradation of creosote oil by various species of white rot fungi and bacteria isolated from the contaminated soil
2018 - IRG/WP 18-50334
The aim of the study was to determine biodegradation effectiveness of the selected polycyclic aromatic hydrocarbons (PAHs) contained in creosote oil, by two white rot fungal species (Bjerkandera adusta and Irpex lacteus) and three bacterial species (Pseudomonas putida, Pseudomonas sp. OS4 and Rahnella aquatilis). Bacteria were isolated from the soil contaminated with petroleum hydrocarbons from th...
M Sydow, J Zabielska-Matejuk, E Kaczorek, AStangierska, A Kropacz
Natural durability of four Tunisian Eucalyptus wood species and their respective compositions in extractives
2019 - IRG/WP 19-10942
In the 50’s, Tunisia government introduced more than 11 Eucalyptus wood species. Eucalyptus species were planted in Tunisia in different arboreta throughout the country for close observation and adaptation to climate and soil. These fast-growing wood species were mainly used as fire wood, for the production of mine wood and to fight against the erosion. These tree species were adapted themselve...
S Ben Ayed, M T Elaieb, S Dumarçay, B De Freitas Homen De Faria, M-F Thévenon, P Gerardin, K Candelier
COPPER NAPHTHENATE: A Product for All Seasons: Protecting the Americas’ Infrastructure for Over 100 Years and Potential for Expanded Usage in Europe
2019 - IRG/WP 19-30738
This paper is a brief review of the history and use of the wood preservative Copper Naphthenate, with a focus on use patterns within the USA and opportunities for expansion in Europe and Canada. This paper reviews how copper naphthenate has performed to preserve and protect cellulosic and wooden items essential to critical infrastructure, and why it is the ideal choice for use in the replacement o...
M H Freeman, J A Brient, M Manning
Potential Use of the Pigment from Scytalidium cuboideum and Chlorociboria aeruginosa as an UV-light Protection Additive in Oil Finishes
2019 - IRG/WP 19-40868
UV-light degradation of wood is one of the top reasons for consumer replacement of outdoor wooden structures. This type of degradation is seldom mechanical, and is instead often motivated by loss of aesthetics (graying). There are numerous commercial products available on the market that deal with this loss of color, many of which contain added pigments to ‘rejuvenate’ or ‘revitalize’ grey...
S M Vega Gutierrez, D W Stone, R He3, P T Vega Gutierrez, Z M Walsh, S C Robinson
Natural durability and performance of Eucalyptus globulus single family house in Spain after 17 years exposure
2019 - IRG/WP 19-40873
From last century, in the country side in Spain is common to find wooden houses. The reason is mainly due the improvements in glues, materials, design by computer and processing in factories. All these technological advances have facilitated the development industrialized systems cheaper. However, the variety of row materials, designs and construction systems, combined with some hard climates, cou...
D Lorenzo, M Touza, J Fernandez-Golfín, A Lozano, J Benito
Durability of Eucalyptus globulus floating structures mussels trough in marine environment against marine borers in the Atlantic coast of Spain
2020 - IRG/WP 20-10965
In Spain, since forever damages caused by marine borers are frequent in wood elements and wood structures located in sea water conditions. Galicia is a region located in the North West of Spanish, above Portugal, characterized by their typical estuaries, where since ancient times, the natural production of mussels from floating structures mussels trough. Since ever, wood species selected to build ...
D Lorenzo, M Touza, J Fernández-Golfin, A Lozano, J Benito
Chemical composition and performances of slow pyrolysis by-product from sugarcane bagasse for wood protection
2020 - IRG/WP 20-30752
Pyrolysis distillate or bio-oil, a by-product of biomasses’ slow pyrolysis in the char-making process, has been traditionally used as bio-pesticides by Asian farmers. Due to its large composition of bio-active chemicals, bio-oil obtained from various biomass has become of interest in many applications, including wood protectants. This study aims to characterize the chemical composition of bio-oi...
F D Boer, M-F Thévenon, J-M Commandre, M Fournier
Bioremediation technology for cleaning-up of the soil contaminated with creosote oil – the overall concept of BIOREM project
2020 - IRG/WP 20-50363
The aim of the communication paper is to present the conceptual framework of the BIOREM project, which started in May 2019. The final result of the entire project will be an innovative bioremediation technology that can be used in areas contaminated with creosote oil – a commonly used wood preservative being a complex mixture of various compounds such as polycyclic aromatic hydrocarbons (PAHs). ...
M Sydow, J Zabielska-Matejuk, A Stangierska
Enhancing the durability of low durability Eucalyptus plantation species: a review of strategies
2020 - IRG/WP 20-40910
Eucalyptus species native to Australia have shown excellent growth rates, good physical properties and resistance to diseases. As a result, they are widely planted globally for a variety of uses. One negative aspect of many of these faster growing species is that they have a high percentage of low durability heartwood that resists preservative treatment. In Australia, large plantations of these sp...
K C Wood, J J Morrell, W Leggate
Treatability of South African-grown Eucalyptus grandis with water-borne copper azole and disodium octaborate tetrahydrate wood preservatives
2021 - IRG/WP 21-40920
This study investigated the treatability of the sapwood and heartwood of sawn Eucalyptus grandis with copper-azole (CuAz) and disodium octaborate tetrahydrate (DOT) water-borne preservatives towards improving its durability for enhanced use in structural solid wood applications. The results obtained showed that, at a moisture content of 12 ± 1%, sawn E. grandis sapwood can be impregnated to a mea...
A A Alade, Z Naghizadeh, C B Wessels
Effect of a Water Repellent Treatment on Moisture Behavior of Three Australian Hardwoods: A Preliminary Report
2021 - IRG/WP 21-40921
Wood is inherently hygroscopic and will sorb moisture either directly from the atmosphere or via capillary action. Moisture can have marked effects on wood properties and repeated wetting and drying creates dimensional changes that lead to physical damage. Exposure to elevated moisture levels also increases the risk of fungal attack.
Wood preservatives have long been used to minimize the risk of ...
B Hassan, J J Morrell, K Wood
Evaluation of weathering and termite resistance of the Myoung-oil as a Korean traditional coating agent
2022 - IRG/WP 22-10996
This study investigated the applicability of Myoung-oil (MO) as an eco-friendly preservative of Korean wooden cultural properties and buildings. Wood test specimens painted with various concentrations of MO were exposed in the external environment. Then color change and wettability of the wood surface were evaluated and compared depending on the exposure time. As a result of exposure for 12 months...
S-M Yoon, Y Park, W-S Jeon, H-M Lee, J-G Park, K Dal Nam, W-J Hwang
A novel wood preservation technology improving durability and water-related properties
2022 - IRG/WP 22-40926
A newly developed silicone oil (Archroma Management GmbH, Switzerland) was tested for wood modification purposes. Scots pine sapwood was treated with aqueous solutions of this silicone oil and showed a penetration of the modification agent into the wood cell wall. Both, biological durability and moisture-related properties, experienced significant improvements by the modification. Besides, the mod...
L Emmerich, H Militz, M Vila
Effect of densification of Eucalyptus nitens and E. obliqua on moisture uptake, swelling, decay resistance, and fire performance
2022 - IRG/WP 22-40946
Some Australian Eucalyptus species that are abundantly available have low natural durability and poor resistance to fire. These same species are also extremely difficult to treat with preservatives or fire retardants using conventional pressure treatment methods due to a large proportion of refractory heartwood. The aim of this research was to understand whether thermo-mechanical densification had...
B Hassan, J J Morrell, F Wiesner, W Wu, B Belleville, K C Wood
Durability of thermotreated Pinus sylvestris and Eucalyptus nitens against wood decay organisms
2022 - IRG/WP 22-40949
One of the alternative treatments to avoid the application of biocides is thermal modification of wood, which increases the durability of wood against attack by wood decay organisms. The durability of Pinus sylvestris and Eucalyptus nitens thermotreated at 180 and 212 ºC, was studied. The results show that thermotreatment against wood decay fungi in P. sylvestris is slightly more effective than i...
M T Troya, S M Santos, L Robertson, N Pérez-Molina, V Baños, A Dieste
A novel method for assessing radial variation in termite resistance of timber
2023 - IRG/WP 23-11005
Australia has many timbers whose heartwood is highly resistant to fungal and termite attack; however, changing public policies have resulted in restricted access to many native forests where these species are found. Plantations of these same species are expected to replace these resources, but there are questions concerning whether timber from these trees will have the same resistance as the nati...
S Kleinschmidt, R McGavin
Establishing the minimum effective penetration of wood preservatives in the refractory heartwood of E. nitens
2023 - IRG/WP 23-30780
Conventional pressure treatment of many Australian hardwoods results in little to no penetration of heartwood and a non-uniform envelope treatment of <5 mm surrounding a mostly untreated core. This is a major issue for many of the low durability plantation hardwood timbers that are grown in Tasmania, which contain high percentages of heartwood. Long term studies on softwoods such as spruce decking...
J R Vargas, J J Morrell, L Yermán, K C Wood
Longitudinal tensile shear properties of polyurethane-bonded preservative-impregnated Eucalyptus grandis laminates subjected to varied simulated climatic conditions
2023 - IRG/WP 23-40967
Bonding process adaptations have yielded improvements in the adhesive bonding of Eucalyptus grandis wood for manufacturing hardwood laminates. However, there are still concerns over the adhesive-bond performance, particularly preservative-impregnated E. grandis laminates, under exposure to varying climatic conditions. These concerns could limit the implementation of E. grandis laminates, especiall...
A A Alade, C B Wessels
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
Effects of preservative impregnations on wettability and surface free energy properties of Eucalyptus grandis wood
2023 - IRG/WP 23-40978
Wettability and surface free energy (SFE) are crucial parameters for evaluating the adhesion thermodynamics of solid surfaces. Hence, this study investigated the effects of copper azole (CA) and disodium octaborate tetrahydrate (DOT) preservative impregnations on Eucalyptus grandis wood wettability and SFE. Wettability was determined in terms of contact angles with polar (water) and non-polar (dii...
A A Alade, C B Wessels, H Stolze, H Militz
Modification of wood by fast pyrolysis bio-oil – the NewWave project concept for bio-based wood treatment
2023 - IRG/WP 23-40990
The NewWave project aims to contribute to building a circular economy by introducing sustainable raw materials in different manufacturing lines, replacing toxic chemicals and lowering the environmental footprint of the products. The raw materials are obtained from the thermochemical fractionation of biomass. This process converts biomass residues by fast pyrolysis into Fast Pyrolysis Bio-Oil (FPBO...
A Sandak, J Sandak, F Poohphajai, R Herrera Diaz, A Gubenšek, K Butina Ogorelec, L Kiezebrink, K J Swager, H Heeres, B van de Beld
Evaluation of the effectiveness of soaking of high-temperature plywood in low-temperature oil-based wood
2023 - IRG/WP 23-40991
We conducted a preliminary investigation to determine if soaking high-temperature plywood in a low-temperature preservative solution could achieve deeper penetration of the preservative, even in plywood made with refractory wood species such as Japanese larch. Specimens cut from commercial plywood (Japanese larch) were stored at various temperatures before being soaked in the preservative solution...
T Miyauchi, S Isaji, H Shibui, N Furuta, J Miyazaki, H Matusnaga
Enhancing UV resistance and decay resistance of wood by nanoparticle dispersed linseed oil nanoemulsion
2024 - IRG/WP 24-20706
Enhancing increasing demand for eco-friendly and cost-effective wood coatings and preservatives has led to the development of water-borne formulations and use of non-toxic and natural materials such as vegetable oils and waxes. The aim of this study was to improve the UV resistance and decay resistance of wood by nanomaterial dispersed linseed oil emulsions. Highly stable nanoemulsions of linseed ...
R Bansal, R Kumar, K K Pandey
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
Studies on the treatability of selected pine species and corresponding efficacies of a new non-biocidal treatment
2024 - IRG/WP 24-20721
Wood decay caused by fungi may reduce the service life of wood in outdoor applications. Since moisture conditions in wood occur as one of the most crucial parameters for fungal decay, chemical modifications, which affect the latter, may increase the resistance of wood against such organisms. Usually, pine sapwood is easier to chemically treat than heartwood, as the former generally shows good perm...
T R da Silva Lins, L Emmerich, H Militz, P H Gonzales de Cademartoni, R J Klizke, M Pereira da Rocha