Your search resulted in 2282 documents. Displaying 25 entries per page.
Interim balance after 20 months of lap-joint exposure
1999 - IRG/WP 99-20164
…of Pinus sylvestris was assessed in a lap-joint test according to DIN V ENV 12037 (1996). Lap-joints of Pinus sapwood were exposed at the test field in Hamburg (Germany) in May 1997. The treated lap-joints were assessed with regard to the performance of the resin treatments out of ground. The exposure of…
M Sailer, A O Rapp, R-D Peek, A J Nurmi, E P J Beckers
Comparative study on the leaching of wood preservatives between natural exposure and accelerating laboratory conditions
1999 - IRG/WP 99-50134
…with CCA, ACQ, and BAAC were subjected to leaching tests. Specimens of 2x2x1 cm3 in size were used for the laboratory leaching test for 10 days according to JIS K 1571. Specimens of 25x1 x1 cm3 were used for outdoor leaching test for 6 months. Total leaching amounts of boron per cm3 of specimens treated with…
K Yamamoto, S Motegi, A Inai
Performance of Chromated Copper Arsenic Treated and Untreated Papua New Guinea Timber Species in Marine Exposure after 95 weeks (664 days)
2025 - IRG/WP 25-11062
…2024. The thesis reports on results obtained from exposure of five Papua New Guinea (PNG) timber species (obtained from secondary growth or plantation grown) after 218 days (31 weeks) in a marine environment in sub-tropical Queensland, Australia. The species studied were: Hopea iriana (Hopea, heavy), Vitex…
E Galore, J Norton, T Singh
Leaching of Boron - more than 3 years of field exposure
1997 - IRG/WP 97-30143
…available. To overcome this lack of information field exposure tests were started with beam-segments treated with pure boric acid and poles treated with CCB. In addition some of the beam-segments were surface-treated with a varnish to investigate the long-term protective effect of a surface coat on leaching of…
A Peylo, H Willeitner
Exposure of preservative treated wood to terrestrial microcosms, pure cultures of fungi and in the field
1997 - IRG/WP 97-20114
…microcosms with different soils, two taken from test fields in Sweden, one soil from a conifer forest and one garden compost soil. Stakes of the same size were also exposed to pure cultures of the brown and white rot fungi, Postia placenta and Phanerochaete chrysosporium. After exposure, weight losses were…
M-L Edlund
Durability of fast- and slow-grown Douglas fir in above ground exposures in Australia
2023 - IRG/WP 23-11009
…heartwood was compared in an above-ground L-joint field test near Brisbane, Queensland, Australia. The L-joint test provides conditions that are favourable to decay. Fast-grown (regrowth) Douglas fir had ≤ 10 growth rings per 50 mm, while slow-grown Douglas fir had ≥ 20 growth rings per 50 mm. Juvenile wood…
L P Francis
Long-term Performance of Treated Timbers in a Sub-tropical Marine Exposure
2023 - IRG/WP 23-11015
…of preservative-treated and modified wood in marine exposures was assessed in Brisbane, Queensland, Australia. This report describes the final destructive assessment of the surviving Australian panels after 11 years of exposure. This site presents the potential for attack by shipworms (likely Bankia spp.),…
E L Galore, J Norton, A Zahora
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…
L Emmerich, H Militz
In-ground performance of two formulations of chlorothalonil after five years of exposure at three test sites in Australia
1996 - IRG/WP 96-30101
…in oil) and installed in-ground at three field test sites in Australia. Specimens were treated with each formulation to achieve 3.2, 6.4 and 12.8 kg/m³ of chlorothalonil a.i. and 3.2 + 0.2, 6.4 + 0.4 and 12.8 + 0.8 kg/m³ of chlorothalonil plus chlorpyrifos a.i. For comparison, specimens of each timber…
J W Creffield, T L Woods, N Chew
Changes in some important mechanical and physical properties of untreated and treated mining timber after exposure to the conditions of a colliery
1996 - IRG/WP 96-20082
…fir and oriental beech was cut in the small standard test specimens to determine changes in some important mechanical and physical properties, 13 month after exposure to the conditions of Kozlu Hard Coal Mines in the depth of 52 m. Thus, the method for determining the effects of decay on structural timber in…
A Bobat
Analysis of wooden shingles after seven years of exposure
2022 - IRG/WP 22-20690
…spruce wood were degraded entirely after seven years of exposure. On the other hand, the copper treated and thermally modified shingles were not degraded. However, the surface roughness of thermally modified wood and untreated wood considerably decreased after weathering, resulting in decreased water performance.
M Humar, B Lesar, D Kržišnik, E Keržič, B Jemec
Post-layup protection of mass timber elements in above ground protected exposures: 2-year results
2022 - IRG/WP 22-30766
…assessed with a modified AWPA Standard E21 above-ground test using three ply Douglas-fir or southern pine cross-laminated timber as well as Douglas-fir mass plywood panels. Samples of each material (305 x 102 x 102 mm) were installed in an above ground protected test at the Harrison Experimental Forest (HEF)…
M E Mankowski, T G Shelton, G T Kirker, J J Morrell
Mechanical Properties of Thermally Modified Wood after twelve Months of Field Exposure
2022 - IRG/WP 22-40945
…function of temperature and modification duration. Samples tested in laboratory conditions show better mechanical properties than the causes that were field exposed.
R Hasanagić, M Bahmani, L Fathi, M Humar
BRE Experience in monitoring decay in out-of-ground exposure trials
1995 - IRG/WP 95-20077
…field trial has always been regarded as the ultimate test of performance for assessing the effectiveness of a wood preservative. For this reason, the Building Research Establishment (BRE) has invested much effort in such trials over many years. Emphasis in early trials was on ground contact tests which were the…
J K Carey, R J Orsler
Distribution of copper/chrome/boron preservative in light red meranti (Shorea leprosula) before and after exposure test for 72 months
1995 - IRG/WP 95-20073
…boron in the various treated wood tissues before and after exposure for 72 months.
S Salamah, S Ani
Effect of MVOC exposure on mycelial growth of wood rotting fungi
2021 - IRG/WP 21-10977
…by wood rotting fungi are common to fungal species tested in the studies, while others are specific to each species. Furthermore, it has been also shown that each wood rotting fungi do not always produce the same type of MVOCs in the same quantity, but that the production patterns of MVOCs change depending on…
S Horikawa, R Konuma, M Yoshida
Depletion of wood preservatives after four years' marine exposure in Mt. Maunganui harbour, NZ
1994 - IRG/WP 94-50036
This paper reports on chemical analysis of marine test samples exposed in Mt. Maunganui harbour, New Zealand from 1977 to 1981. Depletion data for a Class II CCA, a CCA-A formulation, acid copper chromate and ammoniacal copper arsenate are presented. The results suggest differences in the rate of loss of…
K J Archer, A F Preston, C M Chittenden, D R Page
Longterm Performance of Treated Timbers in Marine Exposures
2020 - IRG/WP 20-10969
…of preservative-treated or modified woods in marine exposures was evaluated at test sites in Newport, Oregon, USA and Brisbane, Queensland, Australia. All samples have exhibited excellent performance at the Newport, Oregon site, while attack was more aggressive at the sub-tropical Brisbane site. Acetylated…
M Konkler, A R Zahora, J Norton, J J Morrell
Sequential exposure of borate treated Douglas-fir to multiple Formosan subterranean termite colonies in a 40-week field test
1993 - IRG/WP 93-10006
…(Isoptera: Rhinotermitidae), in an above-ground field test. Samples were placed in contact with each colony for 10 weeks, with oven-dry weight losses determined between exposures, for a total termi exposure period of 40 weeks. Feeding activity differed among termite colonies, with the control wood samples having…
J K Grace, R T Yamamoto
A below-ground exposure method for determining the resistance of woody and non-woody materials to attack by subterranean termites
1993 - IRG/WP 93-10012
With existing field test procedures, in which specimens are installed vertically to some of their length into the ground and spaced out from each other ("grave-yard" tests), variations in the rate of contact by termites between replicates can be common. Mechanical damage to…
M Lenz, J W Creffield
Performance of wood decking after 5 years of exposure: verification of the combined effect of wetting ability and durability
2019 - IRG/WP 19-20647
…moisture performance, and the climate and design induced exposure dose of wooden structures. This approach was validated on the decking of a model house in Ljubljana that was constructed in October 2013. Decay and moisture content of decking elements was regularly monitored. In addition, the resistance dose DRd, as…
M Humar, D Krzisnik, B Lesar, C Brischke
Performance of field cut preservatives above-ground and in ground contact exposures
2019 - IRG/WP 19-30742
…were assessed in ground contact and above-ground exposures. After 10 years in ground contact exposure, all of the untreated controls had failed or exhibited very advanced decay. In contrast, the copper naphthenate (2% Cu in mineral spirits) reference showed only low levels of decay in a few specimens. No…
R Stirling, D Wong
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 in…
D Lorenzo, M Touza, J Fernandez-Golfín, A Lozano, J Benito
A natural exposure weathering test for the evaluation of preservative performance
1992 - IRG/WP 92-2400
Natural exposure weathering tests were carried out by externally exposing treated wood samples for varying periodes of time up to 36 months. In the laboratory these samples were assayed for residual preservative effeciveness using Coniophora puteana FPRL 11E. The…
J Brown, G R Williams
The efficacy of polymer/preservative treatments in soil-bed exposure
1992 - IRG/WP 92-3729
…Treated samples were subjected to an unsterile soil burial test. The addition of polymer reduced the weight loss in borontreated samples at the lower retentions but not at the higher retention. Results with borates indicate that polymers may improve performance in above-ground applications. Polymer treatments…
R J Murphy, H M Barnes, S M Gray