Your search resulted in 818 documents. Displaying 25 entries per page.
Evaluation of mass timber materials for military and commercial trailer decking
2024 - IRG/WP 24-41009
In this study, CLT trailer decking was manufactured to current military trailer decking specifications, verified using PRG320 performance criteria, and treated with either waterborne or oil borne wood preservatives. Preliminary results show adequate uptake of preservative solution and subsequent testing shows minimal effect due to treatment. Field durability tests are also being conducted of treat...
G Kirker, A Senalik, X Wang, K Ohno, R Arango, M Mankowski, X Xie, J Eskola, N Kamprath, S Karwaczynski, M Weaver
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 facility for conducting wood durability tests at LSU Agricultural Center
2024 - IRG/WP 24-41012
Efforts by Louisiana State University Agricultural Center (LSU AgCenter) to conduct wood durability research on C. formosanus and other wood-related topics, have led to establishing three field research sites to test wood products against Formosan subterranean termites (New Orleans, La), and native subterranean termites (Franklinton, LA), and to test utility poles for outdoor exposure, decay resis...
Q Wu, J Curole
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
Evaluating the potential for re-using timber from deconstructed sea defence groynes from the Bournemouth groyne field
2024 - IRG/WP 24-50397
In the shadow of a looming climate crisis, the modern age construction industry is evolving. The for implementing sustainable practices has never been greater and the potential role of the circular economy is front and centre. It can play a pivotal role in transforming the industry by promoting sustainable practices which emphasise the need to reduce consumption of natural resources. Re-using timb...
J R Williams
Evaluation of decay detection drill data – a semi-quantitative approach
2025 - IRG/WP 25-11067
Decay detection drilling and pick testing are common methods for evaluating decay in structural timber. In this study 63 poles in snow fence trusses at Finse in Norway, where climate change is expected to increase decay hazard, were evaluated by both drilling and pick testing. The aim of this study was to 1: assess a novel method to translate qualitative evaluation of drilling data into quantitati...
M S Austigard, J Mattsson, G Alfredsen, L Ross, N Bjerregaard Pedersen
Real-time evaluation of connected in-ground termite stations in laboratory colonies of Coptotermes gestroi and Prorhinotermes sp.
2025 - IRG/WP 25-11082
Subterranean termites represent a major challenge in infestation management and monitoring. This study evaluates the effectiveness of connected in-ground stations for termite control, incorporating an advanced electronic device developed and patented by Groupe Berkem (Novaterm®). These stations are linked to a gateway unit that collects the detected signals and transmits them remotely via a 4G ne...
M Butin, F Chopinet, S Savriama, D Messaoudi
Evaluating the Efficacy of Arnica Extract-Based Termiticide from Berkem Biosolutions® in Subterranean Termite Control: A Comprehensive Laboratory and Four-Year Field Study
2025 - IRG/WP 25-20731
Subterranean termites pose significant threats to wooden structures. This study evaluated the efficacy of a bio-based termiticide product containing Arnica extract from Berkem Biosolutions® in controlling subterranean termites in both laboratory and field conditions. The laboratory assessments utilised “the Bottle H” test unit, adhering to the Japan Wood Preservation Association (JWPA) standa...
D Messaoudi, S Khoirul Himmi, D Tarmadi, I Guswenrivo, S Yusuf
Evaluation of 'Deep Penetration Treatment' for wood preservation
2025 - IRG/WP 25-20746
‘Deep Penetration Treatment’ (DPT) is a recently developed wood preservation technique in Japan designed to meet the preservation standards required for residential foundations. This method involves spraying a specially formulated solvent-borne wood preservative onto properly incised dried lumber. Despite being a non-pressure treatment, DPT achieves penetration levels comparable to conventiona...
M Ikeda, T Shigeyama, Y Sugai
Evaluation of oak bark extracts as bio-based preservative agents in wood protection
2025 - IRG/WP 25-30833
Bark represents a major by-product of the forestry sector and is often referred to low value uses such as combustion for energy, soil mulching or animal bedding. Nevertheless, bark contains a wide array of bioactive constituents, offering considerable potential for transformation into value-added wood protection agents. Developing sustainable wood treatments based on these natural compounds aligns...
R Herrera, A Selmanovic, F Poohphajai, C Peña, A Sandak
Performance Verification of Water-Based Outdoor Wood Protection Coatings Based on Weather Resistance Evaluation
2025 - IRG/WP 25-41015
Recent trends in wood protective coatings: Concerns over volatile organic compound (VOC) emissions and the need to reduce maintenance costs have increased demand for environmentally friendly and highly durable coatings. While conventional solvent-based paints are superior in durability, they have been associated with problems such as environmental impact and odour during application. As an alterna...
N Ikemoto
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
AI Models for Accelerating Wood Protection Testing: Development of Predictive Tools Based on Long-Term Field Test Data
2025 - IRG/WP 25-41023
In this study, we present the development of DecAI, an artificial intelligence (AI) model designed to optimise and accelerate performance evaluations of wood protection products in the European EN 330:2014 "Field test: L-joint method." The Danish Technological Institute (DTI) compiled a dataset of over 100,000 data points from approx.10,000 L-joint samples collected over +15 years at field sites i...
J Stenbaek, B Noufel, L Glade, P Bisgaard
Durability evaluation of outdoor-exposed CLT treated with various wood presevatives using CT scans
2025 - IRG/WP 25-41035
Methods for wood preservation treatment of large materials such as Cross Laminated Timber (CLT) are limited. It is unclear which wood preservation treatment methods can effectively protect CLT from rot risk. In this study, accelerated rot tests (fungus cellar test) of CLT treated with the solvent-borne wood preservative by non-pressure treatment, named ‘deep penetration treatment’, were conduc...
Y Sakurai, T Shigeyama, Y Sugai
Non-destructive methods for field assessment of wood biodeterioration in hardwood trailer decks exposed to tropical environments
2025 - IRG/WP 25-41039
Apitong (Dipterocarpus spp.), an increasingly rare tropical hardwood from the rainforest in Southeast Asia, has long been used as decking materials for open-bed trailers and trucks across North America. As the natural population of Apitong trees steadily declines, there is an urgent need to find sustainable, domestically sourced alternatives for trailer decking. A recent project evaluated the perf...
X Wang, X Xie, G Kirker, C A Senalik
Durability Enhancement of US Hardwoods for Use in Open Trailer Decks
2025 - IRG/WP 25-41048
Apitong, a tropical hardwood derived from endangered species within Dipterocarpus genus, has long been used as a decking material for open flat-bed and lowboy trailers in the U.S. However, as more Dipterocarpus species are classified as endangered and critically endangered by International Union for Conservation of Nature (IUCN) due to the declining population of Apitong trees, there is a growing ...
X Xie, X Wang, G Kirker, C A Senalik
Proposal for New Evaluation Criteria for Exterior Products to Achieve a Circular Economy
2025 - IRG/WP 25-50408
In recent years, the development of laws related to the promotion of wood use in buildings in Japan has led to a significant increase in wood demand, resulting in the widespread use of various wood materials in construction. In this context, the use of preservative-treated wood, selected based on the principle of using the right material in the right place, has been emphasized. However, a systemat...
K Murakami, T Fujii, Y Iijima, T Hikiji
Evaluation of Fungicide Transfer to Fruit Stored in Bins Constructed from Anti-Sapstain Treated Radiata Pine
2025 - IRG/WP 25-50417
This study investigates the potential transfer of fungicides to apples stored in bins made from wood treated with the anti-sapstain fungicides Antiblu® CC, containing carbendazim and chlorothalonil, and Antiblu® 375, containing oxine copper as an active ingredient. The analysis examines residues of chlorothalonil, carbendazim, and copper in apples exposed in mini-bins made from anti-sapstain tre...
D Humphrey, A Russell