Your search resulted in 214 documents. Displaying 25 entries per page.
Accelerated decay tests on DNBP-treated Pinus patula and Eucalyptus grandis
1987 - IRG/WP 3441
Blocks (10 x 10 x 5 mm³) of Pinus patula and Eucalyptus grandis were impregnated to 0, 1.5, 3.0 and 4.5 kg/m³ 2-sec-butyl, 4, 6 dinitrophenol (DNBP). They were monitored microscopically and for weight losses over 16 weeks against monocultures of Coriolus versicolor and Coniophora puteana. Treated…
L D Abraham, A A W Baecker
Effectiveness of "Gang-Nail" plates in preventing splitting of Eucalyptus poles and Brazilian hardwood sleepers
1984 - IRG/WP 3262
…an anti-splitting device, placed on the end surfaces of Eucalyptus spp utility poles and Brazilian hardwood sleepers at the beginning of an air-drying period. The type of device used, a "Gang-Nail" plate, reduces significantly the splits at the end-surface of poles, but reduces only a little the splits occurring…
A M F Oliveira, J A C Sodré, O B Neto
Field trials of groundline remedial treatments on soft rot attacked CCA treated Eucalyptus poles
1983 - IRG/WP 3222
A total of 17 CCA treated Eucalyptus poles, which were found to contain 2-5 mm of soft rot in October, 1980, were reinspected in October, 1982. In 1980, 11 of the poles were given a supplemental groundline bandage treatment of either Osmoplastic or Patox, while 6 of the poles were…
W S McNamara, R J Ziobro, J F Triana
Preservative treatment of Eucalyptus saligna fence posts by the double-diffusion method
1982 - IRG/WP 3196
Eucalyptus saligna fence posts treated by the double-diffusion method with two chemical combinations showed average lives of 11.2 years (copper sulphate and potassium dichromate at 10.5 kg/m³ retention)and of 14.3 years (copper sulphate and sodium mono-H…
E S Lepage, A R De Freitas
Treatment of messmate (Eucalyptus obliqua L'Hérit) by double-diffusion: Preliminary report
1983 - IRG/WP 3234
…needed for the operations involved. Treatment of messmate (Eucalyptus obliqua L'Herit) rounds involving pre-heating in water prior to their immersion in the first stage solutions is described. Preliminary indications are that (i) there is a deeper penetration of arsenic when a compound of this element is…
F F K Ampong, C-W Chin
Performance of CCA treated Eucalyptus round ties
1985 - IRG/WP 3342
…5.5 years of field exposure in the south of Brazil round Eucalyptus ties treated with CCA type A Oxide (OSMOSE K-33-A) preservative with retentions from 12 to 14 kg/m³ (0.75 to 0.873 PCF) (active ingredient basis) are performing very well. No decay or insect attack was observed in the 100 ties in test in real…
V J Carlos, F R Niederauer, J P P Wehr
Soft rot decay of Eucalyptus maculata Hook. in different soils from Queensland, Australia
1980 - IRG/WP 1113
…their gross effects on the decay of treated and untreated Eucalyptus maculata examined. The soils were also amended with various levels of phosphate to study the response of the wood decay mycota to an increasing supply of this nutrient. Phosphate amendment was chosen because of the wide-scale use of superphosphate…
L E Leightley, I W Russell
A comparative study of some anti-splitting devices, using Eucalyptus saligna and hybrids of Eucalyptus saligna X Eucalyptus spp poles
1983 - IRG/WP 3251
…as banding steel, to avoid or reduce splits at the end of Eucalyptus treated poles. On other hand users and manufacturers do not have data to confirm the effectiveness of the banding steel types normally used such as galvanized "Steel-Belt" and galvanized "Wire-Belt". For this reason a comparative study was carried…
F C Geraldo, J A C Sodré
Nasutitermes exitiosus and wood-rotting fungi in Eucalyptus regnans, E. acmenioides, E. wandoo, and E. marginata: force-feeding, laboratory study
1985 - IRG/WP 1231
Under a force-feeding regime, the termitid Nasutitermes exitiosus was fed on four eucalypt timbers infested with several fungal species to investigate the influence of such fungus-infested timbers on mass of wood lost, termite biomass, fat content and water co…
D B A Ruyooka
Further studies on soft rot decay in CCA treated Eucalyptus power transmission poles in Queensland, Australia
1980 - IRG/WP 1115
…on the examination of fungi isolated from CCA treated Eucalyptus power transmission poles were presented at the 10th Annual IRG Meeting. Since then further examination and identification of fungal isolates has been completed together with screening tests for wood decay ability and tolerance to creosote and CCA…
L E Leightley
The micro-distribution of copper/chrome/arsenate in Acer pseudoplatanus and Eucalyptus maculata
1973 - IRG/WP 319
…in two problem hardwood species, Acer pseudoplatanus and Eucalyptus maculata. If the components were found to be distributed less uniformly than in softwood tissues this could possibly account for the unexpected field performance of these hardwoods in ground contact.
D J Dickinson
Soft rot in heartwood of preservative-treated pole stubs of Eucalyptus cypellocarpa L. Johnson
1983 - IRG/WP 1204
Pole stubs of Eucalyptus cypellocarpa L. Johnson, treated in the sapwood with certain waterborne preservatives and exposed for 21 to 23 years in a dry tropical region were severely soft-rotted in the heartwood, as well as the sapwood. They broke with a brash fracture when…
J E Barnacle, G C Johnson, M A Tighe
Note and literature survey on the "Eucalyptus borer" Phoracantha semipunctata F. (Col.; Cerambycidae), a pest in between forest and wood
1984 - IRG/WP 1228
In the Eucalyptus-forests of Huelva, Spain, Phoracantha semipunctata appears as a severe forest-pest fatal to trees impaired by drought. The population snowballed in two and a half years, millions of larvae reduce the value of wood to "papermill-quality'&…
S Cymorek
Potential co-valorization of pyrolysis tars from five wood species form Tunisia as wood preservatives bases: Chemical compositions, antifungal and anti-termite activities
2025 - IRG/WP 25-20739
…of five Tunisian wood species (Ceratonia siliqua, Eucalyptus camaldulensis, Eucalyptus maidenii, Pinus pinea, and Quercus canariensis) was carried out in a custom-designed carbonisation reactor developed at the INRGREF's Wood Technology Section (Tunis, Tunisia). This process aimed to produce both char and…
M T Elaieb, J Valette, E Kiény, L Pignolet, S Ghariani, K Candelier
Leaching and chemical redistribution of CCA components in refractory heartwood of E. nitens
2024 - IRG/WP 24-41011
…behaviour and preservative migration of CCA-treated Eucalyptus nitens (shining gum) under repeated wet/dry cycles.
Experimental methods involved preparing CCA-treated wood samples, subjecting them to accelerated weathering with simulated rainfall, and assessing leaching rates. Results indicate that arsenic…
J R Vargas, L Yermán, K C Wood, T Singh
A novel method for assessing radial variation in termite resistance of timber
2023 - IRG/WP 23-11005
…approach was evaluated on 30-year-old Gympie messmate (Eucalyptus cloeziana) logs that were peeled to a 3 mm thickness and dried to 10-15% moisture content. The samples were exposed to attack by the economically significant subterranean termite Coptotermes acinacinoformis. Mass losses and visual termite ratings…
S Kleinschmidt, R McGavin
Establishing the minimum effective penetration of wood preservatives in the refractory heartwood of E. nitens
2023 - IRG/WP 23-30780
…level of chromated copper arsenate (CCA) penetration into Eucalyptus nitens heartwood that prevented fungal colonization by the brown rot Fomitopsis ostreiformis. Visual and culturing results indicated that the epoxy barriers failed to prevent fungal colonization on the untreated surfaces and further studies are…
J R Vargas, J J Morrell, L Yermán, K C Wood
Impacts of elevated moisture levels and subsequent drying on screwed
2023 - IRG/WP 23-40970
…CLT. There is growing interest in using hardwoods such as Eucalyptus nitens for CLT, but few reports on moisture effects. This study examined the effects of wetting on performance of wall-to-floor connections with self-tapping screws in E. nitens CLT. Wetted/dried assemblies experienced substantial internal…
C M T Roder, C D Gerber, J J Morrell
Gleditsia triacanthos tannins for wood coatings
2023 - IRG/WP 23-40995
…and its displacement of native forests. In this work, Eucalyptus grandis and Pinus taeda wood samples were treated with waterborne acrylates, linseed oil, alkyd resins on their own and combined with extractives from Gleditsia triachantos. Heartwood and bark extractives were compared. The viscosity of the coating…
C M Ibañez, E Fernandez
Effect of a Water Repellent Treatment on Moisture Behavior of Three Australian Hardwoods: A Preliminary Report
2021 - IRG/WP 21-40921
…changes was evaluated on Tasmanian shining gum (Eucalyptus nitens), messmate (E. obliqua), and southern blue gum (E. globulus) with prolonged water immersion. In general, dipping samples in the water repellent produced no noticeable improvement on either moisture uptake or dimensional change over 512 hours…
B Hassan, J J Morrell, K Wood
Evaluation of decay and energy properties from thermally modified biomasses during fungal deterioration by NIR-spectrometry
2021 - IRG/WP 21-40922
…and chemometrics models.
Sugarcane bagasse, coffee husk, eucalyptus and pine shavings were torrefied at 290 °C in a screw reactor, during 5, 7.5, 10, 15 or 20 min. Raw and torrefied biomasses were submitted to a water leaching step and then exposed to white and brown-rot fungi, simulating various storage…
B de Freitas Homem de Faria, P Santana Barbosa, J Valente Roque, A de Cassia Oliveira Carneiro, P Rousset, K Candelier, R F Teofilo
Effectiveness of Gleditsia triacanthos heartwood extractives as wood protector
2019 - IRG/WP 19-10950
…and hexamine (1%).
Sapwood samples of Pinus taeda and Eucalyptus grandis were impregnated by vacuum – vacuum with the resulting mixture. The resistance of the treated wood was tested against two decay fungi, Coriolus versicolor and Gloeophyllum trabeum. The results show that Gleditsia triacanthos wood is…
C M Ibanez, C Mantero, P Raimonda, X Pintos, E Pereira
Treatability of native and exotic alternative timber species
2019 - IRG/WP 19-40864
…like Douglas-fir and cypresses plus hardwoods such as eucalyptus species and New Zealand indigenous beech species. Preservative treatment testing followed by durability testing of treated products eventually determines whether preservative treatment will be beneficial.
Results showed none of the alternative…
D Page, T Singh
Pest and pathogens threaten the sustainability of plantation forestry: Global research collaboration will define the future
2018 - IRG/WP 18-50341
…intensively managed stands of Pinus, Populus, Acacia and Eucalyptus species. The greater proportion of these plantations has been established in areas where the trees are non-native and have thus been separated from their natural enemies. In all documented cases, these plantations have initially been free of…
M Wingfield
An overview of The Wood Preservation Industry in South Africa
2018 - IRG/WP 18-50343
…forests. The species planted are exotic species i.e. pine, eucalyptus and wattle. The commercial forests supply raw material to a diverse forestry sector and industries including Paper and Pulp, Sawmilling, Mining Timber, Poles, Charcoal, Wood chemicals, Fibre and Textiles, etc. Timber preservation in South Africa…
Bruce Breedt