Your search resulted in 1843 documents. Displaying 25 entries per page.
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
…curvignathus. Such treated wood blocks were exposed to aboveground H2 (indoor, non-wetting conditions) hazard class termite field test and compared with CCA-treated kempas heartwood and radiata pine (Pinus radiata) sapwood. Prior to the H2 hazard class termite field test exposure, treated wood blocks were…
D Messaoudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
Performance of wood-based composites in a protected aboveground test in southern Japan
2008 - IRG/WP 08-40391
…termites and microbial (decay) attack under protected aboveground conditions in a southern part of Japan (Kagoshima Prefecture) for six years. Annual visual inspection was conducted and the degree of biological attacks was rated according to the AWPA standard since installation.
As expected, both biological…
K Tsunoda
Performance of Two Imidacloprid-Treated Malaysian Hardwoods in an Accelerated Aboveground Termite Test
2005 - IRG/WP 05-30389
…a simulated Malaysian biological hazard class H2 (exposure aboveground indoors against termites and wood borers), was evaluated by a novel termite field test protocol. Replicate end-grain sealed air dried test blocks (20 x 20 x 20 mm) of two Malaysian hardwoods, Kembang Semangkok (Scaphium spp.) and Rubberwood (Hevea…
A H H Wong
Aboveground Microbial Decay Test of Biocide Treated and Untreated Wood Exposed to Danish and Humid Tropical Climates
2004 - IRG/WP 04-20306
A co-operative study was initiated to compare the aboveground field decay test of untreated and preservative-treated timbers under Nordic (Danish) and a representative humid tropical (Malaysian) environment according to CEN standard method. Matched specimens of untreated and both preservative-impregnated and…
A H H Wong, N Morsing, K H Henriksen, S Ujang
Biological resistance of wood-based composites under protected, aboveground conditions
2005 - IRG/WP 05-20312
…particleboard=PB and aspen oriented strand board=OSB) were tested for their resistance against subterranean termites and decay under protected aboveground conditions. The exposure method was previously developed for evaluating performance of sill plates (dodai) in Japanese homes. Ten replicates (10 cm square x board…
K Tsunoda
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
…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 (brush-on) with a novel wood preservative based on vegetal extracts-cypermethrin…
D Messaoudi, A H H Wong
Envelope wood protection against subterranean termites under H2-hazard class tropical environment by a new generation wood preservative with vegetal extracts-cypermethrin mixtures
2023 - IRG/WP 23-30795
…against subterranean termites when exposed to indoor aboveground contact. Applying only brush-on (envelope) treatment of tropical kempas (Koompassia malaccensis) hardwood with this ready-to-use preservative and subsequently subjecting air dried treated wood to a rigorous laboratory evaporative ageing protocol…
D Messaoudi, A H H Wong
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
…subterranean termite Coptotermes curvignathus exposed to aboveground H2 (indoor, non-wetting conditions) hazard class targeting termites compared to CCA-treated kempas and radiata pine (Pinus radiata) sapwood. Prior to the H2 hazard class termite field test exposure, treated wood blocks were conditioned to either a…
D Messaudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
Laboratory and field evaluation of Laminated Strand Lumber treated with Borogard® ZB against termites
2009 - IRG/WP 09-30498
…acinaciformis. Against both species of termite, LSL test specimens treated with an analysed retention of 2.06% m/m Zinc Borate performed as well as test specimens treated with an approved commercial reference preservative (permethrin). Furthermore, results indicated that the Borogard® ZB-treatment of LSL was…
D K Scown and J W Creffield
Comparative Laboratory Leaching Test Methods to Study Post-Treatment Storage Period Impacts on CCA Leachability and Fixation in Treated Kempas (Koompassia malaccensis) Heartwood
2007 - IRG/WP 07-20376
Three laboratory leaching test methods were compared to determine the effects of different post-treatment storage fixation periods on leachability/fixation of CCA components from treated kempas (Koompassia malaccensis) permeable heartwood. End-sealed test wood blocks of permeable were…
A H H Wong, H C Lai
Laboratory bioassay and field trial on imidacloprid and cypermethrin as glueline treatments for softwood plywood
2006 - IRG/WP 06-30405
…the retention of 20 g a.i./m3 failed to adequately protect test specimens of radiata pine plywood (19 ply x 1.6 mm-thick veneers) from attack by both Coptotermes acinaciformis and Mastotermes darwiniensis. However, it was noted that imidacloprid only marginally failed against attack by C. acinaciformis in the field.…
J W Creffield, D K Scown
Standard and accelerated testing of boron-additive wood protection systems
2005 - IRG/WP 05-30381
…systems for above ground applications by means of field testing. The two field test procedures used are based on the L-joint test described in the European standard EN 330. For the first set up the boron treated timber was coated in accordance with the standard EN 330 system. The second set up is based on an…
A Mohareb, J Van Acker, M Stevens
Envelope treatment to protect softwood timbers from damage by subterranean termites
2003 - IRG/WP 03-30313
Two aboveground field trials were conducted in Australia to determine the effectiveness of envelope treatments of deltamethrin and permethrin for the protection of softwood framing timbers against termite damage. Radiata pine Pinus radiata D.Don and slash pine…
B C Peters, J W Creffield
Correlation between a laboratory bioassay and field trial conducted to determine the termiticidal effectiveness of bifenthrin
2002 - IRG/WP 02-20248
…threshold limits obtained were the same for the two test species of termite employed, Mastotermes darwiniensis Froggatt and Coptotermes acinaciformis (Froggatt). Lower and upper threshold limits obtained for M. darwiniensis in both the laboratory and field were 10 and 20 g/m3. The threshold limits for C.…
J W Creffield, K Watson
Structural health assessment of wood - A comparison of methods for determining the spatial spread of fungal infestation in beams and rafters
2025 - IRG/WP 25-11051
…measurements and High-Energy Multiple Impact (HEMI) – tests. None of these methods indicated a possible loss of structural integrity of the wood that was not already macroscopically visible on the sanded cross-sectional surfaces of the components. To overcome the drawback of real building components which…
C Brischke, N Sommerfeld, E Flohr, A K Mayer, S Bollmus
Revealing the degradation process of Moso bamboo (Phyllostachys edulis) by different decay fungi
2025 - IRG/WP 25-11060
…brown rot fungi and two white-rot fungi, were used as the test fungi to investigate the changes in structure and chemical composition of Moso bamboo samples at different incubation times in order to better understand the degradation mechanism of the decay fungi on bamboo. Mass loss, pH, and moisture content of Moso…
J Xue, D Cui, M Zhou, J Cao
A comparison of methods – how to achieve a robust and conclusive durability classification of wood
2025 - IRG/WP 25-11063
…be to ensure transparency and comparability and to create test scenarios adapted to real exposure conditions. Whether this is achieved by the current portfolio of European standards may be questioned.
In this paper, selected adjustment screws are examined and re-assessed through analysis of published data from…
C Brischke
Evaluation of decay detection drill data – a semi-quantitative approach
2025 - IRG/WP 25-11067
Decay detection drilling and pick testing are common methods for evaluating decay in structural timber. In this study 63 poles in snow fence trusses at Finse in Norway, where climate change is expected to increase decay hazard, were evaluated by both drilling and pick testing. The aim of this…
M S Austigard, J Mattsson, G Alfredsen, L Ross, N Bjerregaard Pedersen
Detecting wood-decay fungi in walls: a non-destructive approach with an electronic nose
2025 - IRG/WP 25-11070
…polystyrene (XPS)-insulated, and glass fibre-insulated test specimens. Decay was induced using Fomitopsis palustris, while control specimens remained unexposed. Sensor responses were analysed using principal component analysis (PCA). The results demonstrated that decay-induced odour changes were distinguishable,…
M Suzuki, T Miyauchi, S Isaji, R Naganawa
Natural and enhanced durability of wood exposed above ground
2025 - IRG/WP 25-11079
…This extensive, long-term study involves over 1,700 test specimens, providing a standardised framework for comparing wood species under consistent and controlled conditions, such as uniform dimensions and exposure to specific weather conditions.
The study evaluates decay, moisture content, discoloration…
R Digaitis, J Stenbaek, A W Christof, N Morsing, B Lindegaard
From Wet to Preserved: Collecting Data of Waterlogged Wood Treated with PEG in Lanyan Museum and Study the Effect of Molecular Weight on Dimensional Stability
2025 - IRG/WP 25-11080
…from the Qiwulan area, selects relics of similar size as test materials, and uses a Laser Raman Scattering Spectrometer to evaluate the degree of decay. The pretreatment uses 2% ethylenediaminetetraacetic acid and 10% sodium hydroxide. For freeze-drying treatment, the wood is first immersed in liquid nitrogen,…
K-L Huang, P-Y Kuo
Evaluating the Efficacy of Arnica Extract-Based Termiticide from Berkem Biosolutions® in Subterranean Termite Control: A Comprehensive Laboratory and Four-Year Field Study
2025 - IRG/WP 25-20731
…The laboratory assessments utilised “the Bottle H” test unit, adhering to the Japan Wood Preservation Association (JWPA) standard JWPAS-TS-(1) 2018 with Coptotermes gestroi as the test species. The results showed that there was no termite penetration in all treated-soil test units, indicating that the product…
D Messaoudi, S Khoirul Himmi, D Tarmadi, I Guswenrivo, S Yusuf
Improvement and practical application of dry-type pressure treatment method
2025 - IRG/WP 25-20734
…response to this, the authors conducted adhesion strength tests, dimensional change measurements between before and after dry-treatment, and durability tests assuming the foundation environment of conventional construction methods to evaluate dry-treating engineered wood. As a result, it was found that the dry…
D Tezuka, C Igarashi
Enhancing the Fire Resistance of Spruce Wood through Treatment and Additive Application: Small Flame Test Method
2025 - IRG/WP 25-20737
…panels treated by spraying with Burnblock® spray, were tested using “Small flame test method” according to EN ISO 11925-2:2011. The fire retardant product from Burnblock ApS is reported by the Danish company to be bioderived and non-toxic. The results for the untreated planed spruce showed moderate…
E S Mujanic, R Hasanagic, E Kerzic, L Fathi, M Humar
Securing Flame Retardancy in Wood: Durability After Artificial and Natural Weathering Test
2025 - IRG/WP 25-20738
…exceptional resistance to leaching. Cone calorimetry tests further confirmed the superior flame retardancy of the treated wood, with strong performance even after prolonged weathering.
M Wu, L Martin, H Militz