Your search resulted in 1357 documents. Displaying 25 entries per page.
On the use of miniaturized wood specimens in fungal decay experiments – mini-blocks versus EN 113 test specimens
2024 - IRG/WP 24-11044
…experiments has been a longstanding practice because these tests offer quicker results than field tests. Various methods, including miniaturized specimen formats and different incubation periods, have been explored to expedite decay processes and assess wood preservation efficacy. The 'mini-block' format, suggested…
C Brischke, G Alfredsen
Investigating moisture dynamics and fungal decay risk: integrating X-ray CT visualization and simulation benchmarks through a Fungal Control Unit
2024 - IRG/WP 24-11045
…While existing methodologies, such as lab and field tests, provide valuable insights into wood decay, they often fall short in replicating real-life conditions, particularly within the intricacies of the building envelope. To address this limitation, a set-up is needed in which we can test a building envelope…
J Van den Bulcke, J Van Acker, M Delbeke, A Blommaert, N Van Den Bossche, M Steeman, L De Ligne
Efficacy performance of Pea Extract as bait toxicant for termite control in Reunion Island
2024 - IRG/WP 24-11050
…for its efficacy during rapid laboratory screening tests on cellulose paper towards C. gestroi. Cellulose consumption, termite behavior and termite mortality were recorded. This work suggested the good potential of Pea Extract as biobased bait toxicant for the control of subterranean termite populations…
J Vuillemin, D Messaoudi, A Robert, P da Silva
Exposure tests on railroad ties treated with DOT
2024 - IRG/WP 24-20705
Keruing railroad ties were treated with disodium octaborate tetrahydrate (DOT) to retentions of 0.7 to 1.7% boric acid equivalent (BAE) and selected borate treated ties were subsequently over treated with creosote/diesel fuel mixture. The treated ties were exp…
L Arthur, J-W Kim
Suberinic acid from birch bark and its suitability in wood protection
2024 - IRG/WP 24-20708
…on the growth of two fungi species. Initial radial growth tests showed a slightly slower growth rate for brown rot, whereas white rot exhibited faster growth than the untreated reference. In contrast, a commercial wood preservative significantly reduced the radial growth of both fungi species. Evidence of cell wall…
A Treu, M Altgen, J Rizikovs
Barriers of polyglycol/borate treated wood prevent termite attack to untreated wood above them in 10-year field tests
2024 - IRG/WP 24-20709
…in 3 different field test sites. Results of 10-yr. field tests for these building components and the untreated wood exposed above them are presented. It is not surprising that the treated wood was protected from termite attack. However, despite large populations of termites being present in the soil beneath the…
K W Ragon, J D Lloyd, T L Amburgey
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
…species used to obtain extracts were also included in the tests. All samples were exposed to decay and termites for eight years at a test site in southern Mississippi using ground contact (AWPA E7) and ground proximity (AWPA E26) tests. Results showed that combining heartwood extract and linseed oil resulted in…
M E Mankowski, G T Kirker, B Hassan
Elevated pressure hybrid wood modification: Synergistic effects on durability performance
2024 - IRG/WP 24-20725
…closed system at 130, 150 and 180 oC. After EN 84 leaching tests, the 9 different combinations were tested for use class 4 applications using EN 15083-2 fungal lab test. Surprisingly, even the minimum intensity combination of 20% FFA at 130 oC resulted in maximum Durability Class 1 performance. Separately, the…
P Klaas, D Jones
Durability of acetylated beech (Fagus sylvativa L.) laminated veneer lumber (LVL)
2024 - IRG/WP 24-30807
…test set-ups in sterile and non-sterile laboratory tests, and primary results of the material in exterior soil contact and in marine environment. Up to now, acetylated beech LVL showed no signs of decay in any of the conducted tests, and was classified as very durable (DC 1).
M Slabohm, H Militz
Bio-durability and weathering performances of cardanol-treated wood
2024 - IRG/WP 24-30809
…cardanol, and the mass gain without and with leaching tests was measured. Then the cardanol-treated wood samples were subjected to AWPA E10 soil block test and artificial weathering test. It was found that the mass gain of solid cardanol-treated pine (83.8 ± 2.6% and 81.5 ± 2.6% for samples without and with…
L Liang, McDonald, A G, L Cai
A novel treatment for increasing UV stabuility of wood based on citric acid and urea
2024 - IRG/WP 24-30811
…with treatment temperature. Accelerated weathering tests revealed significant colour changes over time, with specimens coated with a mixture of melamine formaldehyde (MF) and fluorescent nanoparticles exhibiting the least alteration, indicating improved UV stability. Ongoing research aims to further evaluate…
S Jué, A Scharf, C-F Lin, R Moutou Pitti, D Sandberg, D Jones
International joint field trial on the moisture performance of wood – Set up and first results
2024 - IRG/WP 24-40996
…from six continents teamed up to conduct field exposure tests and record wood moisture content over time. These results were then compared with more controlled moisture uptake and release tests in laboratory. Several of the latter tests showed a strong ability to predict moisture performance of exposed wood…
C Brischke, et al. (33 co-authors)
Evaluation of the water exclusion ability and inherent bioactivity of heartwood against decay in Japanese and European wood species via above-ground exposure and water absorption tests
2024 - IRG/WP 24-40998
…of each factor to wood durability, above-ground exposure tests were conducted on Japanese and European wood species. A double-layer test was carried out using heartwood specimens of four wood species, i.e., Japanese cedar, Japanese cypress, Scots pine, and Norway spruce in Akita Prefecture (40°N, 140°E) starting…
T Osawa, R Noda, K Yamamoto
Field performance of preserved shakes and shingles
2024 - IRG/WP 24-41000
…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 preservative in this application. More recent data also show that…
R Stirling, S Kus
Evaluation of mass timber materials for military and commercial trailer decking
2024 - IRG/WP 24-41009
…shows minimal effect due to treatment. Field durability tests are also being conducted of treated and untreated materials in tropical sites in Suriname and 8-month data is presented herein. Presence of gaps in the CLT layup have proven problematic as it presents a pocket for collection of soil and moisture that…
G Kirker, A Senalik, X Wang, K Ohno, R Arango, M Mankowski, X Xie, J Eskola, N Kamprath, S Karwaczynski, M Weaver
Field facility for conducting wood durability tests at LSU Agricultural Center
2024 - IRG/WP 24-41012
…both within- and between-colony replications, in-ground tests to evaluate preservatives (stake tests) or termite baits, test structures, above-ground preservative comparative tests and/or building component durability tests, and basic termite biology / behavior / movement studies. Along with site weather, and…
Q Wu, J Curole
Analysis and performance of spruce alternative species and discarded wood for windows production
2024 - IRG/WP 24-50386
…discarded silver fir (Abies alba) in laboratory and field tests. The laboratory 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…
B Lesar, J Levanič, M Humar, A Treu
The durability and mechanical properties of 40 years old Black locust poles
2024 - IRG/WP 24-11042
…Visual inspection, hyperspectral imaging, and laboratory tests were conducted to assess decay, density, mechanical properties, extractive content, and water performance. Despite weathering, the old black locust poles exhibit superior mechanical properties compared to recent wood. The density of the old poles was…
M Humar, J Malik, J Levanic, D Krzisnik, E Kerzic, B Lesar
Synergized pyrethrins insecticide as a spot treatment option for West Indian drywood termites
2023 - IRG/WP 23-11004
…treated with SupaPy in short and continuous exposure tests. Vapor toxicity was determined in lab tests, and penetration of SupaPy through termite fecal pellets was assessed using silicon airline tubing. Results showed that exposure of termites to SupaPy through wood-treated surfaces resulted in rapid mortality.…
B Hassan, C J Fitzgerald
Natural durability of 9 tropical species suitable for round wood timber building: fungi and termites laboratory screening tests
2023 - IRG/WP 23-11013
…of abundant species was done and characterization tests were performed to assess their usability as building material. The aim of this work was to determine the natural durability of wood from 9 selected Guyanese species. Oxandra askeckii, Goupia glabra, Lecythis persistens, Hymenopus heteromorphus, Pouteria…
M Leroy, K Candelier, J Damay, J Bossu, R Lehnebach, M-F Thevenon, J Beauchene, B Clair
Assessing changes in hardness of furfurylated wood on a nano-scale to mimic levels experienced by the marine wood-boring crustacean, Limnoria
2023 - IRG/WP 23-11016
…can be used to supplement longer, standardised marine tests, such as those outlined in the European standard EN275, and provide early indication of product performance.
It is difficult to determine the mode of action of resistance to Limnoria attack and the extent to which different factors affect durability. A…
L Martin, J Zekonyte, S Lande, M Westin, S Cragg
Japanese traditional wooden building construction project in Bangkok - Part 2 Verification of termite control method
2023 - IRG/WP 23-11022
…have been proven effective in Japan.
Stake and container tests were conducted and the following results were obtained:
1. There is no damage on specimens covered with stainless steel mesh, CuAz-treated specimens both stake test and container test.
2. Natural pyrethrin-treated specimens without stainless steel…
H Ishiyama, S Murakami
Efficacy of a wide-spectrum plant bio-based anti-termite product - Laboratory trials
2023 - IRG/WP 23-11024
…have been evaluated through: (1) laboratory screening tests on cellulose paper against Reticulitermes flavipes, (2) laboratory tests according to the guidelines of EN117 against Coptotermes gestroi and Prorhinotermes canalifrons, and, (3) soil treatment tests against C. gestroi. This work reports the efficacy…
M-F Thévenon, F Chopinet, J Vuillemin, A Robert, S Lafay, D Messaoudi
Mini-stakes – an alternative test method for EN 252?
2023 - IRG/WP 23-20691
…with a specific product is evaluated based on variety of tests, including penetration evaluation, leaching studies as well as decay tests. EN 252 standard test is a core method for wood durability evaluation in a ground contact, both for commercial product approval and scientific research. In different climates,…
R Digaitis, P Larsson Brelid, N Terziev, M Klamer, A W Christof, J Stenaek, N Morsing
Optimisation of accelerated weathering procedure as an alternative to natural weathering
2023 - IRG/WP 23-20693
Comprehensive tests need to be performed to obtain the most accurate data possible on the durability of wood. The most reliable performance tests are field tests. However, since this is very time-consuming, we frequently rely on laboratory tests. To increase the…
E Keržič, M Humar, V Vek