Your search resulted in 1357 documents. Displaying 25 entries per page.
Using satellite-retrieved soil moisture data to model the decay risk of in-ground timber
2022 - IRG/WP 22-20689
…wood decay model based on terrestrial microcosm (TMC) tests. The resulting hazard map plotted dose as an indicator of in-ground wood decay based on differences in annual temperature and soil moisture characteristics. Unlike aboveground hazard maps, the dose presented is specific to in-ground conditions that…
P B van Niekerk, M Schönauer, B N Marais, C Brischke
Wood Protection Using Nano Metal Oxides in Propylene Glycol
2022 - IRG/WP 22-30760
…white-rot and brown-rot fungal growth. Fungal resistance tests using nanodispersion treated wood specimens shows that nano-ZnO dispersion in propylene glycol inhibited decay more effectively than commercially available ZnO aqueous dispersion. CuO was more efficient in preventing decay than ZnO dispersion of same…
S Nair, G B Nagarajappa, K K Pandey
Impregnation of wood with antifungal compounds from low-quality tree biomass
2022 - IRG/WP 22-30763
…wood against fungal decay. The results of the fungal tests clearly show that hydrophilic extractives of less-quality wood of pines and black locust inhibit both fungal growth and reduced fungal decay of wood. It was found that the wood extracts of pines and black locust can be referred as to natural…
V Vek, I Poljanšek, A Balzano, M Humar, P Oven
Properties of Iron (II) Sulphate treated Norway Spruce
2022 - IRG/WP 22-30765
…and biocides. After treatment, decay and water performance tests were conducted. From the test results, the wettability factor kwa and the inherent resistance factor kinh were determined. Both factors were used to calculate the resistance dose (DRd) according to the Meyer-Veltrup model. The samples were also exposed…
B Lesar, M Humar, M Škamlec
Effects of Borax and Boric Acid as Fire Retardants on the Resistance of Pterygota macrocarpa Wood to Fire Tests
2022 - IRG/WP 22-30770
The combustible nature of wood as a building material, when exposed to hazards of fire underscores the reason for fire retardant treatments. Pterygota macrocarpa wood is commonly used by builders in Nigeria for roof and other structural applications. Therefore…
J M Owoyemi, O Apogbona, T O Akinwamide
Copper Naphthenate – A Data and Capability Update
2022 - IRG/WP 22-30771
…has been well documented from international field tests as well as decades of commercial service. The use of copper naphthenate has been dramatically expanded due to its proven performance, non-restricted use, minimal environmental impact, and superior end of life options. Extensive demand and interest has…
J-W Kim, J D Lloyd
Field tests of different tropical wood species in sea water
2022 - IRG/WP 22-30773
…Research Station in Sweden since 1999. Most of these tests have started during the last 5-8 years.
Wood species included have been Lophira alata (Azobé/Ekki), Minquartia guianensis (Manwood/Acaria), Chlorocardium rodiei (Greenheart), Cyclodiscus gabonensis (Okan/Denya), Shorea spp. (Bankirai), Dicorynia…
M Westin, P Larsson Brelid
Durability against fungal decay of sorbitol and citric acid (SorCA) modified wood
2022 - IRG/WP 22-40928
…values was analysed by high-energy multiple impact (HEMI) tests and correlated with the ML resulting from decay by brown and white rot fungi. Basically, the structural integrity decreased with increasing ML in specimens being incubated with brown rot fungi, which was not observed after white rot incubation. The…
K Kurkowiak, L Emmerich, H Militz
Comparative study of the properties of silicate coatings with different mineral pigments (titanium dioxide, iron (III) oxide, copper (II) oxide) on the surface of wood
2022 - IRG/WP 22-40936
…of the coatings were compared using single flame source tests. The surface of wood was well masked by the coatings and the colour of the coatings was a function of the pigments. The coating layers were rough with arithmetic average roughness values Sa between 3 μm and 5 μm and maximum peak-to-valley height…
A M Cheumani Yona, M Petrič
Evaluation of the physical properties of heat-treated native Peruvian woods for their application as coverings in buildings located in in arid, semi-warm and humid climates
2022 - IRG/WP 22-40943
…9 % when thermally treated. It can be concluded from both tests that in real use in humid conditions or prolonged rain, typical of the arid, semi-warm and humid climates of the southern Peruvian coast, Cedrelinga catenaeformis Ducke wood would have a better performance than Matisia Cordata wood, either in its…
K Ayala Castro, A Loayza Argüelles, V J Pilco Mamani
The Resistance of Some Commercially Thermally Modified American Hardwoods to Termites and Fungi
2022 - IRG/WP 22-40944
…termites) were evaluated using standard laboratory tests. In the decay test, an extra set of samples was prewetted prior to installation into the test to determine if slow wetting of the thermally modified samples contributes to apparent decay resistance. The decay test was only partly successful, but the…
B Cortes, B Bond, A Taylor, J Lloyd
Effect of densification of Eucalyptus nitens and E. obliqua on moisture uptake, swelling, decay resistance, and fire performance
2022 - IRG/WP 22-40946
…of the densified material, while cone calorimeter tests were used to indicate heat release rates. Thermo-mechanical densification has many positive attributes for improving hardness and modifying colour but did not improve decay resistance or fire performance of the samples, however further testing is…
B Hassan, J J Morrell, F Wiesner, W Wu, B Belleville, K C Wood
Influence of weathering on the mechanical properties and performance of exterior wood coatings
2022 - IRG/WP 22-40951
…the same coatings were also exposed to the same weathering tests before their tensile properties were measured. Results show that artificial and natural weathering modified the overall mechanical properties of wood coatings. The elastic modulus and the strength increased whereas the strain at break dramatically…
L Podgorski, J-D Lanvin
Phenol formaldehyde modification and termite resistance under laboratory testing
2022 - IRG/WP 22-40952
…EN117 over a period of 8 weeks using no-choice and choice tests. Controls included unmodified blocks and those modified without resin but just water, whilst treated blocks included those subjected to water soaking as well as without. No choice testing realised significantly reduced attack ratings, particularly for…
L Nunes, A Pitman, M Duarte, B Stefanowski, D Jones
Durability of thermally modified western hemlock lumber against wood decay fungi
2022 - IRG/WP 22-40954
…lumber that was left over following bending strength tests. The test compared the decay resistance of thermally modified western hemlock with untreated western hemlock, untreated southern pine, and southern pine treated with copper azole to UC3B retention levels against two brown rot fungi and one white rot…
G Presley, J Cappellazzi, I Eastin
A Comparison of Cross-Laminated Timber (CLT) Floor Panels using Finite Element Analysis and Experimental Fire Testing
2022 - IRG/WP 22-40955
…of the FE model were then compared with the experimental tests performed for a similar-sized panel. The charring rate and temperature distribution across the depth of the CLT panel were investigated for all test specimens and comparisons were made with the experimental results. The comparisons of FE results with…
M Yasir, A Macilwraith, K Ruane
Evaluation of Decay Resistance for the Larch Wood Heat-treated with Superheated Steam
2022 - IRG/WP 22-40956
…as well as various insects including termites. On the both tests, the decay resistance was significantly improved by heat-treatment. It is thought that the chemical structural change of the wood cell wall had a negative effect on the fungi or insects. However, further studies are needed to determine whether it will…
Y Park, S-M Yoon, H Kim, W-J Hwang
Evaluation of different wood by-products for sustainable building biomaterial production using fungal mycelium
2022 - IRG/WP 22-50373
…including thermal conductivity and humidity resistance tests.
C Charpentier-Alfaro, M Poggerini, S Palanti, G Della Rocca, D Pellegrini, A Crisci
Validating a short-term laboratory method to assess the resistance of timber to biodegradation by marine wood-borers
2021 - IRG/WP 21-10975
…expensive and slow to yield meaningful results. Laboratory tests, however, provide a much quicker alternative to test novel timber products against gribble attack. A standard method for assessing the feeding rate of the wood-boring crustacean the gribble (Limnoria spp.) can be used to determine if the wood affects…
L S Martin, J R Shipway, G P Malyon, S M Cragg
Estimation of residual compressive strength on cross laminated timber with biodeterioration damage
2021 - IRG/WP 21-40918
…performance and aging of CLT. In this study, compression tests of CLT damaged by brown rot fungi and termites were conducted to clarify the relationship between residual strength and mass loss rate. The relationship between strength and defect rate of effective area (parallel layer’s area) calculated from CT scan…
R Inoue, T Mori, K Kambara, W Ohmura
DuraSoft Project: a multidisciplinary approach for softwood protection
2021 - IRG/WP 21-50367
…is evaluated through a broad spectrum of ecotoxicological tests. They will be applied at different levels of biological organisation, from the molecular and cellular responses measured in bioindicator organisms to the effects on epibionthic microbial communities. The wood species and the treatments applied are…
I Guarneri, V Moschino, N Nesto, T Marceta, M Sigovini, E Borella di Torre, L Dametto, S Pasqual, M Humar, B Lesar, T Cibic, V Natali, E di Poi, F Cerino, D Formasaro, M Kralj, F Relitti, C Balestra, M Celussi, A Franzo, A Volpi Ghirardini, M Picone, G G Distefano, M Russo, D Marchetto, R Rakar, I Trobec, D Marinic, G Rep, N Thaler, T Galvan, R Lazzarini, F Gombac, D Tagliapietra
Durability of tropical species from Peru according to European Standards
2020 - IRG/WP 20-10964
…the basic guidelines, as well as the necessary tests to determine this value, which is essential to know the degree of protection needed for the tested wood to extend its service life. This standard applies to commercial wood, both native and imported, and helps to improve and obtain better construction…
J Valdivia, P Gómez, M T Troya, L Robertson, J A Martín, A Loayza
Resistance against marine borers: About the revision of EN 275 and the attempt for a new laboratory standard for Limnoria
2020 - IRG/WP 20-20669
…of this lab test will be determined by round robin tests as soon as safe face-to-face collaboration permits. The outcome will be published as a CEN TR (Technical Report) document, with a view to eventual adoption within the revised standard.
S Palanti, S Cragg, R Plarre
Chemical composition and performances of slow pyrolysis by-product from sugarcane bagasse for wood protection
2020 - IRG/WP 20-30752
…Basidiomycete fungi, when performing inhibition growth tests in Petri dishes. Further, no termites survived when exposed to a filter paper with a 10% concentration of bio-oil. All the wood samples have been shown durable against R. flavipes. However, bio-oil remains leachable from the wood, which indicates that…
F D Boer, M-F Thévenon, J-M Commandre, M Fournier
Physical barriers against marine borers based on synthetic polymers
2020 - IRG/WP 20-30754
…The study also includes the first results of the field tests carried out on some wooden elements, taken from the same structure, and treated on site with this type of physical barrier.
A Lozano, D Lorenzo, M Alonso, J J del Coz, F Álvarez