Your search resulted in 438 documents. Displaying 25 entries per page.
Synergized pyrethrins insecticide as a spot treatment option for West Indian drywood termites
2023 - IRG/WP 23-11004
Pyrethrin is a natural biopesticide with relatively low mammalian toxicity. Two identical products in Australia contain pyrethrin in liquid CO2-propelled aerosol, Pestigas from BOC international and SupaPy Supagas. In the current study, the toxicity of SupaPy was tested against West Indian drywood termite Cryptotermes brevis as an option for spot treatment of this pest. Termites were exposed to wo...
B Hassan, C J Fitzgerald
Assessing changes in hardness of furfurylated wood on a nano-scale to mimic levels experienced by the marine wood-boring crustacean, Limnoria
2023 - IRG/WP 23-11016
Wood-boring crustaceans and bivalves can cause severe damage to wooden structures in the marine environment, warranting the need for novel protection systems, such as chemical modifications. Furfurylation increases mechanical properties and resistance of timber species that would usually be susceptible to biodegradation by these borers, such as pine. In rapid laboratory and field testing, furfuryl...
L Martin, J Zekonyte, S Lande, M Westin, S Cragg
Performance of a noise barrier with different wood materials – results from a service trial after 25 years of exposure
2023 - IRG/WP 23-30776
In connection with the construction of the railway connection between Stockholm Arlanda airport and Stockholm city, an 11 km long noise barrier made of untreated European larch was built along the railway line. This provided an opportunity to implement a full-scale study comparing different untreated wood species and preservative treatments. Thus, in March 1996 ten test sections including untreate...
J Jermer, M Westin
Adhesion and performance of exterior wood coatings on chemically and thermally modified wood – Results from 5.5 years outdoor exposure
2023 - IRG/WP 23-40964
Non-durable softwood and hardwood species were treated with the water-soluble cyclic N-methylol compounds 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU) and methylated DMDHEU. One half of the modified specimens were coated with a waterborne acrylic coating system prior a natural weathering for 5.5 years according to EN 927-3 (2020). By frequent evaluations, the impact of chemical modifications ...
L Emmerich, H Militz
Short-term absorption of water and coatings on thermally modified blue-stained spruce wood
2023 - IRG/WP 23-40984
The importance of wood has been increasing in the last decades. Among conifers, predominantly spruce (Picea abies) wood is often used in building constructions in Europe. Namely for construction and facades of buildings, decking and fences. Due to the increased public concerns about biocides, alternative techniques for protection, such as thermal modification and protection by construction, are ga...
R Hasanagic, M Bahmani, M Humar, L Fathi, L Cai
Do naturally sequestered biocidal metals contribute to the marine borer resistance of turpentine?
2024 - IRG/WP 24-11036
Turpentine wood is renowned for its resistance to attack by molluscan marine borers. This resistance is thought to be due to its high silica content, and possibly the presence of other, as yet unknown, compounds. Silica in turpentine wood is present as particles in rays, but in many plant species silica also occurs in cell walls. We hypothesized that Si is present in cell walls of turpentine, but ...
P D Evans, H Matsunaga, D Feng, M Turner, C Kewish
Exposure tests on railroad ties treated with DOT
2024 - IRG/WP 24-20705
Keruing railroad ties were treated with disodium octaborate tetrahydrate (DOT) to retentions of 0.7 to 1.7% boric acid equivalent (BAE) and selected borate treated ties were subsequently over treated with creosote/diesel fuel mixture. The treated ties were exposed in a simulated railway track test bed in Malaysia. The leaching of borate was measured over 5 years. BAE in the ties after 5 years of e...
L Arthur, J-W Kim
Evaluation of the water exclusion ability and inherent bioactivity of heartwood against decay in Japanese and European wood species via above-ground exposure and water absorption tests
2024 - IRG/WP 24-40998
The natural durability of wood has been thought to mainly depend on bioactive extractives and the water exclusion ability. To clarify the contribution of each factor to wood durability, above-ground exposure tests were conducted on Japanese and European wood species. A double-layer test was carried out using heartwood specimens of four wood species, i.e., Japanese cedar, Japanese cypress, Scots pi...
T Osawa, R Noda, K Yamamoto
Microbial symbionts in the shipworm gut: a new finding resolving a century old mystery explaining how shipworms digest lignin
2025 - IRG/WP 25-11061
Shipworms, historically known for their destruction of wooden ships and coastal structures, also play a key role in carbon and nutrient cycling in aquatic ecosystems. Despite extensive research, the exact mechanisms underlying their ability to digest wood, and particularly how they digest lignin, have remained elusive. A better understanding of the way that they attack and digest wood will potenti...
B Goodell, J Chambers, D V Ward, C Murphy, E Black, L B K Mancilio, G Perez-Gonzalez, J R Shipway
Natural and enhanced durability of wood exposed above ground
2025 - IRG/WP 25-11079
Understanding and predicting the durability of wood is essential for ensuring its effective use, long-term reliability, and sustainability in various applications. To address this need, the "Wood Above Ground" project was initiated in 1999 at the Danish Technological Institute (DTI) to investigate the natural durability of wood species under a wide range of above-ground exposure scenarios. This ex...
R Digaitis, J Stenbaek, A W Christof, N Morsing, B Lindegaard
CIOL Wood - Scientific Innovations in Wood Modification for Enhanced Performance and Usage
2025 - IRG/WP 25-20743
CIOL® is a wood modification technology designed as an environmentally friendly alternative to traditional wood preservatives. Utilising a biobased formulation based on sorbitol and citric acid, CIOL® enhances wood's chemical structure, improving its durability, stability, and resistance to decay. This paper provides an overview of the advancements made in CIOL® technology, including its improv...
E Larnøy, A Treu, M Diraison, M Smith, A Audouin, P T Lewandowski, J Biørnstad
Moisture uptake in CLT during the construction phase: real construction conditions versus specimens exposed to environment
2025 - IRG/WP 25-41019
The rapid growth in the use of Cross-Laminated Timber (CLT) in construction highlights the need to address durability concerns, particularly in regions with less experience in Mass Timber Construction and favourable climatic conditions for the biological degradation of wood, such as Mediterranean countries. A lack of awareness and deficient construction management can negatively impact the public ...
D Lima, S Duarte, J M Branco, L Nunes (†)
Evaluation of moisture exclusion ability of wood using double-layer outdoor exposure tests
2025 - IRG/WP 25-41021
The material resistance of wood to decay must be due to the combined effects of heartwood extractives and the moisture content state. Evaluating the moisture exclusion ability of wood is important for assessing its durability in outdoor use. We conducted previously double-layer outdoor exposure tests and investigated the relationship between moisture content over time and the progress of decay usi...
T Osawa, R Noda, K Yamamoto