Your search resulted in 1469 documents. Displaying 25 entries per page.
Durability to wood decay fungi and subterranean termites of Quercus pyrenaica Wild
2025 - IRG/WP 25-11066
…material. For this reason, evaluating its natural durability is essential when establishing the level of protection required, depending on the designated end use. Natural durability is defined as the intrinsic resistance of wood against the attack of destructive organisms. There are standardised methods to…
S Santos, M T Troya, L Robertson, S Gutierrez, G Caballe, J L Villanueva
Durability and molecular analysis of fungal communities in wood exposed above ground
2025 - IRG/WP 25-11068
The objective of the study was to explore the durability of wood exposed above ground, comprising a wide diversity of wood species and treatments and extensive assessment data on wood durability in ongoing long-term testing. Larch species and Scots pine heartwood, two tropical species ntholo and ncurri…
N Högberg, D Panov, G Daniel, N Terziev
Durability and service life of wood in constructions. The Spanish approach of European Standard EN 460
2025 - IRG/WP 25-41028
The durability of wood is an important factor to be considered in the construction influencing in final durability and expected service life of a wood product in construction. There are many factors influencing in the durability (service life) of a wood in…
D Lorenzo, J Fernández-Golfín, M Touza, A Lozano, J Benito
Durability Enhancement of US Hardwoods for Use in Open Trailer Decks
2025 - IRG/WP 25-41048
…a few recent studies have focused on enhancing the durability of domestic hardwoods for such applications. This report presents preliminary findings from a four-year field exposure study using matched specimens of various domestic hardwood species treated with different oil-borne wood preservative systems,…
X Xie, X Wang, G Kirker, C A Senalik
Contribution of naturally durable wood use to Circular Economy - Understanding the classification system of natural durability and its variation within wood species
2025 - IRG/WP 25-50411
…as around moderately durable have shown that natural durability varies widely among clones, sites and within tree trunks in much research. The selection and utilisation of highly durable clones or individuals within these timber species could contribute to extending the service life of building and civil…
K Yamamoto, T Osawa, R Noda
Unlocking the potential of paulownia in Malaysia: Durability assessment to mold
2024 - IRG/WP 24-11043
…musical instruments, and decoration. However, data on its durability to biodegradation is scarce, especially for tropical usage. In this study, a paulownia clone known as Revotropix Paulownia was evaluated for its resistance to mold (Aspergillus brasiliensis) attack. Three paulownia trees with three positions (top,…
S Lipeh, T Khadiran, N A Siam, R Jalil, N F N M Isa
Durability of Malaysian plybamboo to mold
2024 - IRG/WP 24-41014
Durability of 3-layer plybamboo fabricated from two Malaysian bamboo species, Gigantochloa levis (beting) and Gigantochloa scortechinii (semantan) using three different adhesives - urea formaldehyde (UF), melamine urea formaldehyde (MUF) and phenol resorcinal…
S Lipeh, A Mustapha, A S Yusoh, M K A Uyup
Durability of fast- and slow-grown Douglas fir in above ground exposures in Australia
2023 - IRG/WP 23-11009
Natural durability is a key property for untreated timber used outdoors and exposed to the weather. The natural durability of fast- and slow-grown Douglas fir heartwood was compared in an above-ground L-joint field test near Brisbane, Queensland, Australia. The…
L P Francis
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,…
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…
C Brischke, G Alfredsen, L Emmerich, M Humar, L Meyer-Veltrup
Durability against fungal decay of sorbitol and citric acid (SorCA) modified wood
2022 - IRG/WP 22-40928
…to result in a significant increase of the biological durability, specifically an increased resistance against wood-destroying basidiomycetes. However, none of these studies have investigated the resistance of SorCA treated wood against decay fungi by performing a full EN 113-2 (2021) procedure yet, i.e.…
K Kurkowiak, L Emmerich, H Militz
Durability of thermally modified western hemlock lumber against wood decay fungi
2022 - IRG/WP 22-40954
…wood is gaining popularity as a treatment to increase wood durability in the United States. Further standardization and testing of thermally modified North American species is needed to optimize the production of thermally modified products from regionally available resources. This work measures the impact of thermal…
G Presley, J Cappellazzi, I Eastin
Durability of tropical species from Peru according to European Standards
2020 - IRG/WP 20-10964
Natural durability is defined as the intrinsic resistance of wood against the attack of destructive organisms. There are standardized methods to estimate a durability value. In Europe, the standard EN-350 is responsible for establishing the basic guidelines, as well…
J Valdivia, P Gómez, M T Troya, L Robertson, J A Martín, A Loayza
The role of specimen format in wood durability testing
2020 - IRG/WP 20-20672
The experimental basis for testing the biological durability of wood are often incubation experiments with wood-destroying basidiomycetes. Numerous parameters can affect the mass loss by fungal decay (MLF) in laboratory durability tests and therefore being decisive for the resulting durability…
C Brischke, L K Grünwald, S Bollmus
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
…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 has been so low in Japan, various types of durability evaluation methods were not…
T Osawa, W Ohmura, H Kurisaki
Development of procedures for sampling, testing, and classification to determine the biological durability of wood and wood products
2020 - IRG/WP 20-20676
…Goettingen (UGOE).
Determination and classification of durability of wood and wood products against wood-destroying organisms is regulated by EN 350. By the revised version of 2016, its scope has been extended to processed wood, including heat-treated, preservative-treated and otherwise modified wood as well as…
W Scheiding, K Jacobs, S Bollmus, C Brischke
Durability of acetylated Radiata pine: Laboratory tests and performance in practice
2020 - IRG/WP 20-40899
…is an established process to enhance biological durability and dimensional stability of lower valuable wood species without the use of biocides. Acetylated Radiata pine (ACCOYA® wood) has been on the market for more than 10 years now, starting in 2007.
Numerous lab tests have confirmed the high…
K Jacobs, W Scheiding, B Weiß
Chemical defense of trees and wood natural durability: from protection to valorization
2019 - IRG/WP 19-10943
Natural durability of wood is defined as “the inherent resistance of wood against various wood-destroying organisms” (European standard EN 350-1). This property is due in particular to heartwood extractives. However, the wood natural durability is included in a…
E Houel, D Stien, N Amusant
Determining the natural durability on xylarium samples: mini-block test, wood powder and chemical profiling
2019 - IRG/WP 19-10944
…output. In this study we focus on determining the natural durability of xylarium specimens from the Federal Xylarium in the Royal Museum for Central Africa. The Federal Xylarium contains over 80,000 specimens, covering more than 13,000 species, mainly from Central Africa. These specimens have a random format (disks,…
V Deklerck, L De Ligne, J Van den Bulcke, E Espinoza, H Beeckman, J Van Acker
Adhesion durability of the thinnest CLT in Japan treated by solvent recovery system
2019 - IRG/WP 19-40882
The purpose of this study is to clarify the adhesion durability of the thinnest CLT (36 mm thickness) in Japan impregnated with preservatives (azole neonicotinoid compounds (AZN)) under solvent recovery system so called “dry pressure process” for long-term durability. The adhesion durability tests were…
K Kawakami, W Ohmura
Wood chemistry completes natural durability as criteria for shorting best provenances in the improvement of teakwood quality: case of five provenances from Ivorian Séguié’s trial
2018 - IRG/WP 18-10920
…was assessed against Antrodia sp. using the AFNOR Standard EN 350-1. The content of non-structural carbohydrates was determined using an enzymatic method and that of total phenolics and individual quinone were quantified by HPLC. High inter-provenance variabilities were found. All studied provenances were at…
F B Niamke, N Amusant, A A Adima, A A Kadio, G Chaix, C Jay-Allemand
Assessment of the durability of a lesser known species (Borassus aethiopum Mart.) against termite and fungi from different ecozones in Nigeria
2018 - IRG/WP 18-10924
…not been adequately documented especially in the area of durability. This study was therefore conducted to evaluate variations in the natural durability of B. aethiopum in different ecological zones in Nigeria
Five B. aethiopum trees each from Sudan, Guinea and Derived savanna zones in Nigeria were sampled at the…
O O Yekin, A R Ojo
Study of the effect of extractives on the natural durability of Eucalyptus bosistoana wood
2018 - IRG/WP 18-10928
…of the deteriorating agents is defined as the natural durability of the wood. This is an important property when considering the shelf life of wood products exposed to extreme conditions, which together with the physical, mechanical and aesthetic character of the wood define its use. It is a complex phenomenon…
M Ibáñez, C Mantero, N Silva, F Resquín
Durability Testing of a Cattail (Typha spp.) based Insulation Material against Termite Attack
2017 - IRG/WP 17-10879
…of wood and naturally occurring substances. The use and durability of natural materials as insulating materials is of keen interest to many construction experts, and continues to be a topic of intense investigation. It is generally agreed that the use of natural substances as insulation is possible if certain…
M Dass, W Unger, T L Woods
Comparative studies on the durability of English oak (Quercus robur L.) under in-service, field and laboratory conditions
2017 - IRG/WP 17-10881
The durability of many wood species varies due to differences in extractive content, anatomical features, growth conditions, and not at least in dependence of the respective exposure conditions either under test or in real life applications. And so does the…
C Brischke, L Meyer-Veltrup, A Soetbeer, M Höpken, E Melcher, J Trautner