Your search resulted in 212 documents. Displaying 25 entries per page.
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
Macro biological degradation of wood treated with sorbitol and citric acid – first results from marine environment and termite exposure
2020 - IRG/WP 20-40901
Most European wood species are rapidly and severely degraded in termite-infested areas and the marine environment. There is a need for new solutions, especially in the marine environment, since we lack wood preservatives approved for marine applications in Europe. Several wood modification systems show high resistance against both marine borers and subterranean termites. However, the existing comm...
A Treu, L Nunes, E Larnøy
Accelerated surface mould testing for exterior wood treatment in Temperate, Tropical and Laboratory environments
2023 - IRG/WP 23-20699
Mould attack is a very common cause of discoloration on wooden surfaces and can subsequently promote development of wood decay by other organisms. Prevention of mould growth is relevant for both pigmented wood paints as well as more transparent systems with a high or low amount of binder. The use of commercial biocides has led to effective microbiological inhibition in many contexts, but the incre...
A Nazeri, J Stenbaek, T R Laursen, A H H Wong, B M Hasnul
Simulations of microclimates for wood-decaying fungi in the built environment using environmental analysis
2023 - IRG/WP 23-20703
Simulations of fungal decay risk were run on two similar building geometries exposed to typical annual climate conditions of two different geographical locations, Brunswick (Germany) and Cairns (Australia). The simulations were conducted to capture the effect of wind-driven rain and solar irradiation exposure over nodes of the common building geometry. The moisture content and temperature variatio...
P B van Niekerk, J Niklewski, S H Hosseini, B N Marais, I Frimannslund, T Kringlebotn Thiis, C Brischke
Challenges in managing very long-term field tests
2023 - IRG/WP 23-30779
Field testing of wood preservatives has been on-going in Petawawa, Ontario, Canada since at least 1937. Many of the treated roundwood posts from these early experiments are still in test, and include preservatives still used today, including creosote, copper naphthenate, pentachlorophenol and CCA. Performance data from selected experiments more than 50 years old are reported and we discuss some of...
R Stirling, D Wong
Long-term field performance of a carbon-based preservative in ground contact test conditions
2023 - IRG/WP 23-30781
Carbon-based preservatives have demonstrated reasonable long-term field performance in above ground testing. This study examines the performance of a carbon-based preservative formulation containing quaternary ammonium compounds and tebuconazole as a treatment for three softwood species exposed in ground contact at two sites in Canada. The treatment was associated with improved decay resistance an...
C Wilson, J Zhang, R Stirling
Field performance of MCA-treated wood in ground contact
2023 - IRG/WP 23-30782
Micronized Copper Azole (MCA) was evaluated for its ability to resist biodegradation at two Canadian test sites using Pacific silver fir and white spruce stakes, and lodgepole pine and red pine roundwood posts. After 12 years of exposure the treated stakes exhibited low to moderate levels of decay while the untreated controls had failed. When stakes were moved to an active termite site, the untrea...
C Wilson, J Zhang, R Stirling
Envelope wood protection against subterranean termites under H2-hazard class tropical environment by a new generation wood preservative with vegetal extracts-cypermethrin mixtures
2023 - IRG/WP 23-30795
Wood protection industries in progressive economies globally are compelled to develop cost-effective, environmentally acceptable wood treatment solutions for long term carbon storage in wood materials/products while appealing to consumer demands for low environmental impact treated wood. A new generation wood preservative, based in part on 2% vegetal extracts and 0.16% cypermethrin components, has...
D Messaoudi, A H H Wong
Environmental Benefits of Wood Preservation
2023 - IRG/WP 23-50377
Over the past decade or two, many people have become significantly more aware and concerned about the global environment and the health of our planet. Building with wood products from sustainably managed forests carries significant environmental benefits. The ability of a growing tree to absorb carbon dioxide (CO2) and sequester the carbon is beneficial in the role of combating rising CO2 levels...
A Siraa
Manipulation of the hierarchical wood structure for extended carbon storage in the built environment
2023 - IRG/WP 23-50381
The sustainable processing of trees into construction materials can act as carbon storage. Carbon storage in durable sustainable wooden construction material has cumulative effects and net gain in storage in the built environment that can be offset by net losses in forest carbon by cutting the tree. Carbon storage for an extended period plays an important role in the mitigation of CO2 emissions an...
T Singh, A Arpanaei, D Elustondo, Q Fu
Overview of Canadian CRD wood waste recycling ecosystem
2024 - IRG/WP 24-50395
One of the main constituents of solid waste in Canada is waste from the construction, renovation and demolition (CRD) sector. Therefore, there are strong social, economic and ecological needs to reduce the generation of CRD waste and to increase the volume diverted from landfills and incineration. However, as the CRD waste management is not a simple ecosystem, it does require a comprehensive appro...
G Boivin, D Schorr