Your search resulted in 125 documents. Displaying 25 entries per page.
Managing termite risks – An Australian perspective and a cautionary tale
2012 - IRG/WP 12-20482
The management of the risks of termite attack on new buildings in Australia falls to a range of agencies and is mostly achieved through controlling the process by which structures are certified as complying with the Building Code of Australia. Australian Standard AS3660 parts 1, 2 & 3 have historically been the core of this function but now the Building Codes Board's own certification scheme,...
D Ewart
Focus on the European standardization - Towards a revision of the EN 350 natural durability standard: a different approach to the inherent resistance and performance of wood and wood-based materials
2013 - IRG 13-10811
The European standard EN 350 “Natural durability of solid wood”, Parts 1 and 2, is one of the fundamental standards developed by the CEN/TC 38 “Durability of wood and wood-based products”. This standard is widely used by wood industries as the reference document which provides information on the resistance of wood species used in mainly the construction sector against decay fungi, wood-bor...
M Kutnik
Virulence of two Laboratory Test Strains and one Natural Isolate of Rhodonia (Oligoporus) placenta against Thermally Modified Pine and Beech Wood
2013 - IRG/WP 13-20524
Rhodonia (Oligoporus) placenta is known as a relative aggressive basidiomycete fungus against thermally modified timber. In durability lab tests, this often results in a lower durability class, compared to other test fungi. In the reported work, the virulence of three different strains of Rhodonia placenta for untreated and thermally modified timber was determined and compared. Therefore, two lab ...
K Plaschkies, W Scheiding, K Jacobs, N Rangno
Potential valorization of wood extractives from waste products of steam distillation of Aniba rosaeodora: antitermitic activity
2013 - IRG/WP 13-30629
Aniba rosaeodora, is a slow growing evergreens of the Lauraceae family which are indigenous over a wide range of the Greater Amazon Region (the Guianas and Venezuela, Brazilian Amazon…). The essential oil obtained from the wood has a characteristic aroma and is a long-established ingredient in the more expensive perfumes. The wood is also composed with alkaloid compounds like anibin. These compo...
N Amusant, A Digeon
Performance classification of wood in construction – drafting a user friendly European standard
2014 - IRG/WP 14-20545
The performance classification for wood products in construction is an extremely important topic in Europe and beyond – warranty providers and end users demand service life and performance information in the face of competition with other materials. The European project PerformWOOD has formalised and drawn together the on-going research to focus on generation of a material resistance factor for ...
E Suttie, C Brischke, L Meyer, J Van Acker, M Kutnik, E Heisel, F Englund, J Jermer, S Thelandersson, M Polášek, D Lorenzo
Shells of Coconut and their Durability against Termite Attack
2015 - IRG 15-10853
All tropical and subtropical areas of the Earth are inhabited by termites. In climates with moderate temperatures, they occur less frequently. Especially wood and non-wood materials that grows in tropical areas and used there in timber constructions and woodworking, wood durability and protection against termites should be researched. This paper reports findings from an experimental “AW011” la...
M Dass, A H H Wong, W Unger
Bundle tests - Simple alternatives to standard above ground field test methods
2016 - IRG/WP 16-20581
Within this study we applied different new above ground test set ups to untreated Norway spruce (Picea abies Karst.) and Scots pine sapwood (Pinus sylvestris L.) which are frequently used as reference or control species in wood durability field tests. The overall aim of this study was to find a simple alternative method to the few standardized above ground field test methods, such as the L-joint a...
C Brischke, L Meyer-Veltrup
Three-Dimensional Digital Image Correlation of Strains in Profiled Wood Decking Exposed to Wetting & Drying
2017 - IRG/WP 17-20611
We use three dimensional digital image correlation to measure the strains that develop at the surface of profiled radiata pine (Pinus radiata D. Don) deck boards subjected to a wetting and drying cycle. We hypothesise that surface profiling will change the pattern of strain distribution at the surface of deck boards by concentrating stresses at the base of profile grooves. Five groups of three deck board samples were produced from five different pieces of machine stress-graded radiata pine wood. Two wavy profiles, ribble or ripple, were tested. Flat unprofiled boards acted a control. Each board was fixed to a rigid frame and subjected to a wetting and drying cycle. Full field surface strain data was collected using 3D digital image correlation. Strains varied across the surface of both flat and profiled boards. Profiling changed surface strain patterns; strain maxima and minima developed in the profile ridges and grooves during wetting, respectively, but this pattern of strains reversed during drying. Such a pronounced reversal of strains was not observed when flat boards were exposed to wetting and drying, although there was a shift towards negative strains when flat boards were dried. We conclude that profiling changes surface strain distribution in deck boards exposed to wetting and drying, and causes high strains to develop in the grooves of profiled boards. These findings help explain why checks in profiled deck boards are mainly confined to profile grooves where they are difficult to see, and the success of profiling at reducing the negative effects of checking on the appearance of wood decking.
J Mallet, S Kalyanasundaram, P D Evansa
Biodegradation of creosote by white rot fungus Phanerochaete chrysosporium and a strains of Pseudomonas
2017 - IRG/WP 17-50329
The aim of this study was to determine degradation effectiveness of polycyclic aromatic hydrocarbons (PAH) contained in creosote by white rot fungus and bacteria. The following two species of bacteria Pseudomonas putida and Pseudomonas sp. as well as Phanerochaete chrysosporium fungus characterised by the ability to decompose aromatic compounds were selected for experiments. Bacterial strains were...
J Zabielska-Matejuk, A Stangierska, A Kropacz, E Kaczorek
Spanish termites standard UNE 56418:2016 “Protocol of action in urban areas affected by subterranean termite attacks”. Example of application of the standard in a real case in the old city of Vigo, Spain
2018 - IRG/WP 18-10912
Termites are wood destroying insects always present in the nature with an important wood decomposition function. In Europe are located in the Mediterranean area. In Spain is an important problem in urban areas. It is estimated about 80% of old historic cities in Spain are affected by subterranean termite attacks and it is the most important damage in wood structures and carpentries, in old buildin...
D Lorenzo, A Lozano, M Touza, J Benito, M T de Troya, J Galván, L Robertson
The Impact of Cryopreservation Techniques and of Water Quality on the Wood Degrading Ability of Fungal Strains: Recommendations for Maintenance and Culturing Procedures
2018 - IRG/WP 18-20636
In order to establish an optimal cryopreservation method, strains of Basidiomycete and Ascomycete fungi, which are among the most frequently used for wood durability testing, were evaluated using three cryopreservation procedures at -80°C. The main objective was to prevent decrease of the fungal virulence that may occur due to repeated routine sub-culturing procedures and to optimize the reactiva...
A Stum, M Montibus, I le Bayon, M Kutnik
Certification system for treated wood and wood preservative in the relation to regulations in Japan
2018 - RG/WP 18-20639
Certification system about wood protection products in Japan is described to understand the interaction between regulations and certifying organizations. Major regulations are Building Standard Law, Chemical Substances Control Law, Poisonous Deleterious Substances Control Act, Japanese Industrial Standards, and Japanese Agricultural Standard (JAS). Treated wood products are certified with JAS mark...
K Yamamoto, I Momohara
Can CCA be substituted as reference preservative?
2018 - IRG/WP 18-20641
While field testing of wood protective formulations remains probably the best method to find out the effective preservative concentration, the use of chrome-copper arsenate (CCA) as reference becomes debatable due to environmental and legislative reasons. This emerges from the European standardization bodies who have discussed reference alternatives that can omit the use of CCA. The present debate...
N Terziev, M Jebrane, P Larsson Brelid, N Morsing, P-O Flaete, P Torniainen, J S Kim, G Daniel
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
Wood protection technology in the marine environment has changed over the last decades and will continue to do so. New active ingredients, newer formulations, and novel wood-based materials including physically- and chemically-modified wood, together with increasing concerns over environmental impacts of wood preservatives, urgently demand a major revision of EN 275 “Wood preservatives – Deter...
S Palanti, S Cragg, R Plarre
Future development of durability assessment of wood, according to typical usage of preservative-treated wood and naturally durable wood in Japan
2020 - IRG/WP 20-20675
A market of preserved wood products in Japan has two unique histories. First is the market shift to residential ground sills from utility poles and sleepers; the other is the stop of CCA treatment caused by the new effluent standard. In 2018, around 85% of preserved wood products used for residential ground sills were treated with non-CCA such as Cu-based agents. Since the market of treated wood h...
T Osawa, W Ohmura, H Kurisaki
Development of a Standard for Preservative Treated Wood to be used in the Arctic
2019 - IRG/WP 19-20677
There is ongoing interest in the Arctic with political, environmental and recreational developments almost daily. The impact of global warming on loss of permafrost and sea ice is widely reported. In the last three years several cruise ships have traversed the North West Passage. This increased activity has resulted in the recognition of the need for an increased infrastructure. Historically, the ...
J N R Ruddick
In Vitro Growth of the Basidiomycetes Physisporinus vitreus strains in various conditions in comparison with some white rot fungi
2022 - IRG/WP 22-10987
The paper has preliminary test results to select Pysisporinus vitreus fungal strains for further experiments in a large research project on copper tolerance of P. vitreus by chemotropic test, choice test, and agar plate toxicity tests and determination of the effect of various ions on oxalic acid secretion by these white rot fungi. In the project, it is also aimed to run fungal decay tests to dete...
E E Soytürk, S N Kartal
Post-layup protection of mass timber elements in above ground protected exposures: 2-year results
2022 - IRG/WP 22-30766
Mass timber has seen increased use as a building material for low and mid-rise construction in recent decades. The durability of mass timber elements has not been fully examined and the effects of wood destroying organisms on this these materials merits attention. The effectiveness of currently labeled soil termiticides and passively applied biocides at post-construction or as remedial agents need...
M E Mankowski, T G Shelton, G T Kirker, J J Morrell
Subterranean termite control management in urban areas in Spain. Example of management in the old town of Vigo, Spain
2023 - IRG/WP 23-11006
Termites are wood destroying insects always present in the nature with an important wood decomposition function. In Europe, they are mainly located in the Mediterranean area. In Spain, termites are an important problem in urban areas. It is estimated about 80% of old historic towns in Spain are affected by subterranean termite attacks and it is the most important damage in wood structures and wood...
D Lorenzo, A Lozano, M Touza, J Benito
Field durability testing of wood above ground - Part 1: 15 years’ experience with the Bundle method
2023 - IRG/WP 23-20695
A ‘jack of all trades’ method for above-ground wood durability testing has been sought for decades, but until now no method has found its way into standardization. The method of choice shall be applicable for untreated and treated wood – ideally also for wood composites. It shall be reproducible, objective, fast, easy, and inexpensive. Finally, it shall provide high predictive power.
This s...
C Brischke, G Alfredsen, L Emmerich, M Humar, L Meyer-Veltrup
Field durability testing of wood above ground - Part 2: The full guideline of the Bundle method
2023 - IRG/WP 23-20696
To determine the biological durability of wood above ground, numerous approaches for test methods have been pursued and tried out in the field in the past. So far, no method has managed to find its way into a European standard. During the last 15 years, experience with the Bundle method has been gained. As described in Part 1 of this paper, the method is recommended as a suitable tool for determin...
C Brischke, G Alfredsen, L Emmerich, M Humar, L Meyer-Veltrup
Protocol of action in urban areas affected by subterranean termite attacks in Spain. Example of management in the old town of Areatza
2024 - IRG/WP 24-11037
Termites are wood destroying insects always present in the nature with an important wood decomposition function. In Europe are located in the Mediterranean area. In Spain termites are an important problem in urban areas. It is estimated about 80% of old historic towns in Spain are affected by subterranean termite attacks and it is the most important damage in wood structures and wood elements. The...
D Lorenzo, J Benito, J Arancon, D Luengas
EMC as a quality control parameter for thermally modified wood
2024 - IRG/WP 24-20720
While standards for quality performance of treated wood have been in place for many years, none have been developed for modified wood such as thermally modified wood (TMW). Only in one case has TMW been listed in 2018, by the Nordic Wood Preservation Council (NWPC).
A key component of a quality system is its control parameters, i.e. the metrics that are to be measured and controlled. Existing m...
P Klaas, J T Lauridsen
Performance of Douglas-fir cross laminated timber (CLT) subjected to elevated humidity in a ground proximity field test for 6 years
2024 - IRG/WP 24-41010
The ability of insecticidal soil drenches or spray-on insecticide/fungicide treatments to protect mass timber elements exposed in a high moisture environment but out of direct soil contact was assessed using a modified AWPA ground proximity test established in 2017. Three-ply Douglas-fir CLT pieces measuring 305 x 355 x 105 mm (L x H x W) were installed at the Harrison Experimental Forest (HEF) (S...
M E Mankowski, J J Morrell, T G Shelton, G T Kirker
Field test method for wood in above ground situation - The full CEN/TC 38 guideline for the Sandwich method. Part 1 - Determining the relative protective effectiveness of a wood preservative
2024 - IRG/WP 24-41013
The attached draft CEN Technical Specification (i.e. pre-EN standard) has been drafted in order to become an alternative to the Lap-Joint test method (EN 12037:23) for testing of wood in above ground situation and the draft CEN/TS Part 1 is specifically intended for determining the relative protective effectiveness of a wood preservative. The new draft CEN/TS is based on a test method developed by...
M Westin, R Ringman, A Christof, F Friese