Your search resulted in 1909 documents. Displaying 25 entries per page.
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
…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 sp.) were impregnated via vacuum pressure with individual heartwood species…
M E Mankowski, G T Kirker, B Hassan
Above-Ground Termite Resistance of Naturally Durable Species in Ontario and Mississippi
2022 - IRG/WP 22-30767
A collaborative above-ground protected termite field test was initiated by FPInnovations and the USDA Forest Service at sites in Ontario and Mississippi. The aims of the experiment were to compare the rate of attack in protected, above-ground exposures by the subterranean…
R Stirling, M Mankowski
Resistance of borate-treated lumber to subterranean termites under protected, above-ground conditions
2000 - IRG/WP 00-30239
…(sill plate) of the Japanese houses was conducted at the termite field test site of Wood Research Institute in Kagoshima, Japan where two economically important subterranean termite species [Coptotermes formosanus Shiraki and Reticulitermes speratus (Kolbe)] are established. DOT(disodium octaborate…
K Tsunoda, A Adachi, T Yoshimura, A Byrne, P I Morris, J K Grace
Termite resistance of borate-treated lumber in a three-year above-ground field test in Hawaii
2000 - IRG/WP 00-30236
A protected above-ground field test simulating the sill plate (dodai) used in conventional Japanese housing construction was established in both Hawaii and Japan to examine the efficacy of disodium octaborate tetrahydrate (DOT, 2% and 3% shell and through) wood…
J K Grace, R J Oshiro, A Byrne, P I Morris, K Tsunoda
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
…the contribution 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…
T Osawa, R Noda, K Yamamoto
Evaluation of vacuum borate treated spruce or pine CLT in an above ground protected test in southern Mississippi
2024 - IRG/WP 24-41001
…content and negligible biological attack. The presence of termites was noted on feeder stakes in the test subplots, but termite attack on samples had not occurred at this point. As this is the first year of a long-term test, further evaluations will continue.
M E Mankowski, A Taylor, G T Kirker
Above Ground Proximity Decay Field Trial of Modified ACQ-A, Wolman® CA-B and Wolman® CA-C in Taiwan
2023 - IRG/WP 23-30793
…of the wood preservative in preventing decay fungi and termite infestation can be ranked as modified ACQ-A < Wolman® CA-C < Wolman® CA-B. All untreated control samples had failed after 5 years of field trial, none of the wood preservative treated samples failed during the field trial.
J-Y Gan
Post-layup protection of mass timber elements in above ground protected exposures: 2-year results
2022 - IRG/WP 22-30766
…in structures, particularly in areas with elevated risk of termite attack. The ability of soil insecticidal drenches or spray-on insecticide/fungicide treatments for protecting mass timber in service was assessed with a modified AWPA Standard E21 above-ground test using three ply Douglas-fir or southern pine…
M E Mankowski, T G Shelton, G T Kirker, J J Morrell
A field method for determining the above-ground resistance of wood and wood products to attack by subterranean termite
1994 - IRG/WP 94-20035
A method for determining the above-ground resistance of wood and wood products to subterranean termites in the field is described. Termites are aggregated in 20-litre steel drums, each containing a highly susceptible timber substrate. At the centre of each drum, specimens of the test…
J W Creffield
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
…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…
D Messaoudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
Above-ground testing methods – review of Rotorua, New Zealand test site results after ten years
2018 - RG/WP 18-20642
…established in old CCA treated support framing. When resistance to decay was compared between preservatives, CCA was similar to spotted gum and better than any of the preservatives.
D Page, T Singh
Long-term performance of DMDHEU-treated wood exposed in ground, above ground and in the marine environment
2018 - IRG/WP 18-40825
…applicable to improve specific material properties. A high resistance against wood-destroying fungi was proved in various laboratory trials with basidiomycete monocultures and in soil substrate, by means of mass losses (ML) corresponding to durability class (DC) 1-2 (‘durable to very durable’).
This paper…
L Emmerich, H Militz, C Brischke
Above-ground performance of a buffered amine oxide treatment system against Mastotermes darwiniensis
2016 - IRG/WP 16-10855
Above-ground H2 field tests against Mastotermes darwiniensis were conducted in far north Queensland to assess the efficacy of buffered amine oxide treatments in the softwoods Pinus sylvestris and P. radiata, and the hardwoods Eucalyptus regnans and E.…
L J Cookson, R W Clawson Jr
Above ground field testing: results of experiments in Brazil after one year
2015 - IRG/WP 15-30660
…products softwood in a species with no natural resistance (Pinus sp.). The assessment consisted of the simulation of aggressive environment for wooden structures used outdoors, such as door frames and window frames, decks and facades accompanied by a protective varnish coating in half of the specimens.…
M F Natale, J M Vidal
Effect of polyurea coatings on performance of Douglas-fir in tropical above ground exposures
2014 - IRG/WP 14-40665
…potential for using polyurea barriers to limit fungal and termite attack was investigated on Douglas-fir lumber and timbers. Termites were capable of penetrating the barrier to attack non-treated wood as well as wood dip-treated with disodium octaborate. The coatings were also exposed above ground for 48 months…
S Uysal, J J Morrell
Decay resistance of thermally modified Scots pine after 6 years’ exposure above ground
2013 - IRG/WP 13-40624
In the present study the performance of boards treated by ThermoWood process were studied above ground and the results given are based on a “modified” horizontal double- layer test. The base layer of boards was in direct contact with ground and the conditi…
H Viitanen, S Metsä-Kortelainen, A Nurmi, S Jämsä
Termite resistance of treated wood in an above-ground field test
1985 - IRG/WP 2241
…for evaluating the susceptibility of wood products to termites in protected situations above ground. In this method fungal attack on the wood products is minimal, though decay has been observed in conjunction with termite attack in some specimens. Preliminary results from exposure of replicate wood samples…
A F Preston, P A McKaig, P J Walcheski
Termite resistance of treated wood in an above-ground field test
1986 - IRG/WP 1300
…effectiveness of wood preservatives against subterranean termites. Results for the one and two year inspections of treated southern pine sapwood exposed in Hawaii to Coptotermes formosanus are presented. Chromated copper arsenate is providing excellent protection as is the pyrethroid deltamethrin. Borate and…
A F Preston, P A McKaig, P J Walcheski
Above Ground Field Evaluation and GC-MS Analysis of Naturally Durable Wood Species
2012 - IRG/WP 12-10764
…wood (NDW) species are being rated at yearly intervals for resistance to decay, cupping, and checking. Field ratings after 12 months exposure are presented. To date, Paulownia tomentosa (PAW) and southern yellow pine (SYP) are least durable and cedars are the most durable in above ground exposure. Wood samples are…
G T Kirker, A B Blodgett, S T Lebow, C A Clausen
Durability of timber products –Part 1: Inventory and evaluation of above ground data
2012 - IRG/WP12-20498
The material-inherent resistance of wood is one of the most important qualities influencing the durability of timber. Hence, it has also a major effect on the service life to be expected from a timber construction. In addition, design details and the respective climatic conditions…
C Brischke, L Meyer, G Alfredsen, M Humar, L Francis, P O Flæte, P Larsson Brelid
Quantitative design guideline for wood outdoors above ground applications
2011 - IRG/WP 11-20465
…solution. The exposure is then compared with the material resistance defined in five classes and the design output is either OK or NOT OK. The present version of the guideline covers applications for decking and cladding. The data included in the guideline have partly been estimated with the help of a dose-response…
S Thelandersson, T Isaksson, E Suttie, E Frühwald, T Toratti, G Grüll, H Viitanen, J Jermer
Predicting the decay resistance of timber above-ground: 2. When can reliable field data be obtained?
2007 - IRG/WP 07-20368
…paper, biodeterioration data generated during a multi-site above-ground natural durability testing program were analysed to determine the length of time required for field tests to yield useful results. Data representing the durability of replicate L-joint samples of Thuja plicata and Pseudotsuga menziesii exposed at…
L P Francis, A J Swain, J J Morrell
Predicting the decay resistance of timber above-ground: 1. Climate effects
2006 - IRG/WP 06-20330
…sensitive timber service-life information in Australia, an above-ground durability research program was established in 1987. One focus of research is the relationship between climate variables and the durability of timber used above-ground in weather-exposed applications, and an update of analyses are presented in…
L P Francis, J Norton
Performance of borate-treated lumber after 8 years in an above-ground termite field test in Hawaii
2006 - IRG/WP 06-30390
…report eight years of field study results from a protected above-ground field test in Hawaii simulating the sill plate (dodai) used in conventional Japanese housing construction. Field tests were established in both Hawaii and Japan to examine the efficacy of disodium octaborate tetrahydrate (DOT, 2% and 3% BAE shell…
J K Grace, A Byrne, P I Morris, K Tsunoda
Performance of borate-treated lumber in a protected, above-ground field test in Japan
2006 - IRG/WP 06-30395
…plate (dodai) of the Japanese houses was conducted at the termite field test site of the Research Institute for Sustainable Humanosphere of Kyoto University in Kagoshima Pref., Japan where two economically important subterranean termite species [Coptotermes formosanus Shiraki and Reticulitermes speratus (Kolbe)] are…
K Tsunoda, A Byrne, P I Morris, J K Grace