Your search resulted in 211 documents. Displaying 25 entries per page.
Rapid Screening test of potential antimicrobial agents for wood coatings
2018 - RG/WP 18-20644
A two-part screening test has been developed to evaluate additives for wood coatings. First, an additive is tested in the microbial laboratory and evaluated based on its inhibitory properties against selected test organisms, directly on agar plates. A microbial growth analysis is prepared and evaluated. If the additive is considered effective, it will be tested in a standard top coating (acrylic o...
J Stenbæk, E Morsing, T Østergaard Jensen
Durability classification of preservative treated and modified wood
2019 - IRG/WP 19-20659
EN 350 (2016) allows formally to determine durability classes (DC) for wood products and wood-based materials, which was previously only possible for untreated wood in the form of natural durability. In a first study, the University of Goettingen carried out the durability classification of chemically modified (modified with 1,3-dimethylol-4,5-dihydroxyethyleneurea, DMDHEU) and preservative-treate...
S Bollmus, L Bachle, C Brischke, H Militz
Knowledge exchange and transfer from academia to industry in the field of wood protection research – Activities of the IRG-WP Communications Committee
2019 - IRG/WP 19-50354
The International Research Group on Wood Protection (IRG) was founded in 1969 as a structured group of like-minded scientists and technologists focused on generating knowledge of the science of wood deterioration, and novel solutions to provide sustainably and environmentally responsible products for the protection of wood-based materials. The primary function of the IRG is to provide opportunitie...
F Latorre, B Abbott, C Brischke, M Humar, D Jones, E Larnoy, L Nunes, A Preston, T Singh
New methods for estimating the volume of shipworm tunnels supported by image analysis
2020 - IRG/WP 20-20668
In marine environment, the main threat for wood is the bioerosion by woodborers, both peracarid crustaceans (such as gribbles Limnoria and pincher scuds Chelura) and bivalve molluscs (shipworms, Teredinidae).
The damage caused by gribbles on wood structure is surficial and easy identifiable, whereas the damage caused by shipworms is internal, therefore not evident, inducing unexpected crashes wit...
I Guarneri, M Sigovini, E Keppel, D Tagliapietra
Monitoring of wood preservatives exposed to weathering: Extraction and analysis methods of organic biocides from treated wood and collected rain runoff
2020 - IRG/WP 20-30753
Weathering is the cause of numerous damages for outdoor joineries. Protection of wood using a preservative treatment covered with a coating is a process widely used to limit these damages. However, biocides from preservative treated wood are prone to degradation and leaching, having a direct influence on the joinery service life. This document deals with extraction and analytical methods for bioci...
O Ouali, K Le Ménach, E Raphalen, L Podgorski, S Legay, H Budzinski
Studying amount, location and state of water in modified wood at moisture levels relevant for fungal degradation
2020 - IRG/WP 20-40889
Water is an essential parameter for fungal degradation of wood, but degradation primarily occurs at high moisture levels at water potential in the range of -4 to -0.1 MPa, which corresponds to 97-99.9% relative humidity. At these moisture levels, water is present in the wood structure both in and outside of cell walls. The majority of previous studies on the interaction between wood and water for ...
M Fredriksson, E Engelund Thybring, Ramunas Digaitis
Green approach in wood mineralization for improvement of fire properties
2022 - IRG/WP 22-30769
Various treatments have been developed in order to improve fire properties of wood. Because the use of some flame retardants can release toxic compounds in the event of a fire, leading to poisoning or even death of people from smoke inhalation, the use of no-toxic and more ecologically acceptable flame retardants is preferable. Mineralization of wood with the incorporation of carbonates has proven...
A Pondelak, R Repič, L Škrlep, N Knez, F Knez, A S Škapin
Improving wood durability by mineralisation and thermal modification
2022 - IRG/WP 22-40948
A significant increase in the fungal durability of wood was achieved by using a modification procedure combining two environmentally friendly methods: thermal modification and mineralisation. It offers an ecological alternative to other biocidal treatments. European beech (Fagus sylvatica) and Norway spruce (Picea abies) were selected as model wood species and exposed to four different fungi: Gloe...
R Repič, A Pondelak, D Kržišnik, M Humar, A S Škapin
Analytical retentions of active ingredients in H2F treated framing over a 12-year period
2023 - IRG/WP 23-20702
The H2F hazard class in Australia was developed to treat internal framing timber with a surface application of an insecticide, to control mainly termites. Two of the actives approved in AS 1604.1-2010 (and subsequent revisions) for this hazard class are bifenthrin and imidacloprid. The penetration zone of both actives is 0 – 2 mm from the wood surface.
Radiata pine sapwood framing timber wa...
A Siraa
Field test methods as long-term aging – report of selective wood properties
2023 - IRG/WP 23-40962
Wood samples from a long-term field test are a valuable compendium of information about the material in the context of its aging processes. In the current work, wood samples from the round-robin test within the ECOMOD project were used as a material for the natural aging process (III and IV class of utility). The research scope was to determine selected properties of this wood which can be partial...
W Perdoch, M Benc, B Mazela, A Szulc, J Cegiela
Utilising novel service life prediction methods for robust and precise Life-Cycle-Costing (LCC)
2023 - IRG/WP 23-50384
Life-Cycle-Costing (LCC) is one of the basic indicators for the assessment of sustainability and cost effectiveness in construction applications. Project WoodLCC was thus conceived to enable LCC through input from models for detailed service life planning of wooden components and buildings. The project is a continuation of the service life planning research conducted in Europe over the last three ...
P B van Niekerk, G Alfredsen, T Kalamees, R Modaresi, A Sandak, J Niklewski, C Brischke