Your search resulted in 93 documents. Displaying 25 entries per page.
The susceptibility of oriented structural straw board (OSSB) to damage by subterranean wood-destroying and grass-feeding termites in Australia
2014 - IRG/WP 14-40683
The field performance of untreated oriented structural straw board (OSSB) made from wheat straw was evaluated against two economically important Australian species of wood destroying subterranean termite, Coptotermes acinaciformis and Mastotermes darwiniensis, and two Australian species of grass-feeding subterranean termite, Amitermes meridionalis and Nasutitermes triodiae. Oriented strand board (...
J Hague, D Scown, J Creffield, M Neal
Development of a rapid screening method to determine the susceptibility to mould growth of novel construction and insulation products
2015 - IRG/WP 15-20562
Wood-based materials are commonly used in building construction/insulation as a replacement for solid timber. However, these materials are susceptible to microbiological growth and different environmental conditions influence the vulnerability of wood-based materials. Moulds are a common problem found within homes and cause aesthetic damage, health problems and can increase material vulnerability ...
B K Stefanowski, S F Curling, E Mansour, G A Ormondroyd
Best handling practices for wood crossties (sleepers)
2015 - IRG/WP 15-40714
Wooden crossties (sleepers) dominate the rail industry in the USA. Most ties are hardwood treated with oil-borne preservatives using pressure treatment. Incipient decay (called ‘stack burn’) commonly develops during the pre-treatment drying process and reduces tie performance and longevity. Practices to minimize stack burn and enhance wooden tie performance are discussed as an aid to non-wood ...
N Irby, J Lloyd, A Taylor, J Watt
Effect of Nano-Silane on Permeability in MDF as a Result of Susceptibility to Moulds and Fungi
2016 - IRG/WP 16-40716
Effects were studied of vapor chamber on specific gas permeability of nanosilane-treated medium-density fiberboards (MDF). Size range of nanoparticles was 20 – 80 nm. Nano-silane (NS) was used at four consumption levels of 0, 50, 100, and 150 g/kg dry wood fibers. Density of all treatments was kept constant at 0.67 g/cm3. Specimens were kept for 18 weeks in vaporized chamber; their specific gas ...
H R Taghiyari, J Norton, A Moradiyan, M Sadegh Taher Tolou Del, H Siahposht, B Moradi-Malek, M Noferesti
A Case Study of Long-term CCA Preservative Leaching from Treated Hardwood Poles in a Humid Tropical Condition
2016 - IRG/WP 16-50324
Chromated copper arsenate (CCA)-treated Malaysian hardwoods have long been used as utility poles, posts, construction piles and motorway fencing in soil contact exposed to the threats of decay fungi and termites. Despite global concerns citing predominantly temperate conditions of long-term leaching of CCA toxic heavy metals from wood into surrounding soils and groundwater since the 1990’s, the ...
A H H Wong, W S M Chin
Susceptibility to filamentous fungi of plywood for furniture coated with waterborne acrylic lacquers
2017 - IRG/WP 17-40778
Filamentous fungi (mould), thanks to their little trophic requirements belong to organisms which grow exceptionally easy and fast in favorable hygrothermal conditions and attack both organic and inorganic materials even with only trace amounts of organic substances on the surface. The fungi often cause spoilage of foodstuffs, worsen the aesthetic of wood-based elements, and pose a threat to the en...
A Fojutowski, M Nowaczyk-Organista, P Hochmańska
Assessing the nutrient value of bio-based materials in relation to early fungal growth
2017 - IRG/WP 17-20631
Bio-based materials are gaining importance in the building industry, as the focus on sustainability and life-cycle-assessment has increased dramatically over the last decade. Wood and wood-engineered products as well as insulation materials made from flax, hemp, etc. are hence increasingly used. These materials originate from renewable resources and are often biodegradable, which can cause problem...
L De Ligne, J Van den Bulcke, J Baetens, B De Baets, J Van Acker
Superior kempas hardwood protection with two proprietary microemulsion termiticdes based on permethrin and cyermethrin against Coptotermes termite attack under H2 an H3 weathered conditions found in buildings
2018 - IRG/WP 18-10931
SARPECO® and AXIL® 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 treatment but also for vacuum pressure tr...
D Messaudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
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
An overview of recent studies involving the thermal modification of hardwood species
2019 - IRG/WP 19-40869
This paper outlines recent activities related to the thermal modification of hardwood species, and particularly to tropical hardwood species. Timber demand is ever increasing, but this is being limited by the necessity to protect virgin forest stands. As such, the majority of supply of popular species is being met from juvenile short rotation stands. The limited age from these stands often plays a...
D Jones, M Gaff, F Kacik
Evaluation of chemical densification of three hardwood species through in-situ electron beam polymerization
2020 - IRG/WP 20-40893
Hardwoods are the most suitable species for wood flooring for their appearance as well as their hardness. Yet, improving hardness can provide substantial benefit for the wood flooring market. Chemical densification of wood and in-situ polymerization through electron beam technology was chosen to increase hardness of three hardwoods (Yellow birch (YB) (Betula alleghaniensis Britt.), Sugar maple (SM...
J Triquet, P Blanchet, V Landry
Susceptibility of selected Australian commercial timbers to West Indian drywood termite Cryptotermes brevis
2023 - IRG/WP 23-11003
West Indian drywood termite (Cryptotermes brevis) is a globally distributed timber pest and is invasive in Queensland, Australia, causing widespread damage to structures and large economic impacts in control and repair costs. Despite this, the knowledge of which specific timbers are susceptible to attack is limited and requires investigation. Two six-week feeding trials were performed, exposing se...
W Haigh, R A Hayes, B Hassan
Unlocking the potential of tropical fast-growing hardwood species
2023 - IRG/WP 23-11010
Social forestry or community managed forestry practices have been promoted as an inclusive way to mitigate climate change through the framework of the UNFCCC scheme of the Reduce Emission Deforestation and forest Degradation (REDD+) programme. Fast growing wood species are one of the least tapped social forestry commodities in Southeast Asia, and they have the potential to be upscaled to meet the ...
S Fauziyyah, R Wimmer, C Brischke
A novel wood preservative with vegetal extracts-cypermethrin mixture protects H2-weathered envelope-treated tropical hardwood kempas against Coptotermes termites
2023 - IRG/WP 23-30794
In accordance with sustainability development initiatives by commercial wood protection to conceive of cost-effective, environmentally acceptable wood treatment solutions replacing traditional biocides, this paper reports an aboveground subterranean termite test of termite-susceptible heartwood blocks of the tropical (Malaysian) structural hardwood kempas (Koompassia malaccensis) envelope-treated ...
D Messaoudi, A H H Wong
Adhesion and performance of exterior wood coatings on chemically and thermally modified wood – Results from 5.5 years outdoor exposure
2023 - IRG/WP 23-40964
Non-durable softwood and hardwood species were treated with the water-soluble cyclic N-methylol compounds 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU) and methylated DMDHEU. One half of the modified specimens were coated with a waterborne acrylic coating system prior a natural weathering for 5.5 years according to EN 927-3 (2020). By frequent evaluations, the impact of chemical modifications ...
L Emmerich, H Militz
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
Comparison of residual Methylisothiocyanate (MITC) in Australian and South American hardwood and softwood treated with a solid compressed Dazomet fumigant stick
2024 - IRG/WP 24-20712
The efficacy of compressed dazomet sticks with or without a copper-based accelerant for control of internal decay of both softwood and hardwood species was examined in multiple field trials. Effective levels of methylisothiocyanate (MITC), the fungitoxic decomposition product of dazomet were found in Australian spotted gum (Corymbia spp) and Guyanese Wallaba (Eperua falcata) as well as in southern...
R Tungal, M Powell, J J Morrell, T Singh
Service life of poplar, a low durability hardwood
2024 - IRG/WP 24-41007
Hybrid poplar is the most common plantation hardwood of the temperate climate zone and is complementary to natural stands of aspen with mainly plantations in Europe and China. Poplar wood has been considered as a valid alternative for many of the construction applications of softwoods especially when considering engineered wood products.
The natural durability of hybrid poplar is low and for a ra...
J Van Acker, X Jiang, L De Ligne, J van den Bulcke