Your search resulted in 2075 documents. Displaying 25 entries per page.
Re-Distribution of Copper in the Cell Walls of Wood Treated with Micronized Copper Quat
2009 - IRG/WP 09-30506
…wall in sufficient quantities to control soft rot decay. A method was developed to accelerate and detect re-distribution of copper into the cell wall. Copper was found to re-distribute into the cell wall, presumably from cell lumen deposits, in both ACQ- and micronized copper quat-treated samples after exposure to…
R Stirling, J Drummond
Laboratory and above ground exposure efficacy of silicon-boron treatments
2009 - IRG/WP 09-30510
…dynamic MOE correlated very well thus proving that both methods can be employed for testing. The both method showed some decrease in MOE depending on the tested silane and, in case of PhTES, the applied concentration.
N Terziev, D Panov, A Temiz, S Palanti, E Feci, G Daniel
Performance of softwood preservative treated stakes after 4 years exposure in-ground to decay fungi and termites in tropical Australia
2008 - IRG/WP 08-10643
This field study was based on the 1993 IUFRO method and designed as a graveyard (in-ground) test in the tropical region of the Northern Territory to examine the efficacy of novel preservative formulations developed as alternative protection for softwood timber against decay fungi and termites for Hazard…
B M Ahmed (Shiday), J R J French, S R Przewloka, P Vinden, J A Hann, P Blackwell
Above Ground Field Testing – Influence of test method and location on the relative performance of various preservative systems
2008 - IRG/WP 08-20393
…above ground tests such as the lap-joint or test deck methods can be very slow in producing useful information on the relative performance of wood preservative systems. It often requires many years for decay to develop in wood treated to sub-optimal concentrations of standardized preservatives, making relative…
A Zahora
The Role of Moisture Content in Above-ground Leaching
2007 - IRG/WP 07-50245
…contents obtained using simulated rainfall and immersion methods. Laboratory leaching trials with CCA-treated specimens were also conducted and the results compared to published values for leaching of CCA-treated specimens exposed above ground outdoors. Previous researchers have reported that the moisture content…
S Lebow, P Lebow
Durability of some alternatives to preservative-treated wood. Progress report 2: Results from field tests after 5 years’exposure
2007 - IRG/WP 07-30442
…sapwood as control.
Results after five years’ exposure showed that
• Preservative-treated wood, with some exceptions, in general had far better performance than any of the untreated wood species and alternatives tested.
• Amongst the alternatives, acetylated wood had a performance comparable to…
M-L Edlund, J Jermer
L-joint based testing for service life prediction of exterior plywood in out of ground contact conditions
2006 - IRG/WP 06-20342
…a test set up was developed, using EN 330 L-joint testing methodology, to facilitate differentiation of plywood for exterior applications.
The proposed test set up is an adaptation of an accelerated L-joint method introduced by Van Acker and Stevens (2003). Regular L-joints are used to expose plywood specimens as…
J De Smet, I De Windt, J Van Acker
Standard and accelerated testing of boron-additive wood protection systems
2005 - IRG/WP 05-30381
…of the jointing area.
After three years of aboveground exposure, boron preservatives are still providing an adequate protection to coated L-joint specimens. Based on the results obtained it can be concluded that boron-based compounds still provide good protection after three years of natural weathering when…
A Mohareb, J Van Acker, M Stevens
Leaching of Active Components from Preservative Treated Timber. Stage 1: Semi-Field Testing
2004 - IRG/WP 04-20302
…ground). The project focuses on developing a field trial method for investigating leaching.
Panels are subjected to outdoor exposure under natural weather conditions at a test field at the Danish Technological Institute. The leachate is collected and monitored by chemical analysis of the active ingredients. The…
N Morsing, B Lindegaard
The full guideline for the “double layer test method” - A field test method for determining the durability of wood out of ground
2004 - IRG/WP 04-20290
This guideline describes a test method for wood to be exposed to the weather out of ground contact. The main objective of the method is to evaluate the durability of wood in above ground exposure as shifted overlaid stakes, which form the so called double layer.
The method is applicable to…
A O Rapp, U Augusta
Leaching of active components from preservative-treated timber. Stages 2 & 3: Laboratory testing and comparison with semi-field testing
2004 - IRG/WP 04-20303
…preservative-treated wood obtained by the laboratory test method CEN/OECD draft guideline, February 2003 ”OECD guideline for the testing of chemicals proposal for new guideline XXX. Estimation of Emissions from Preservative-treated Wood to the Environment: Laboratory Method for wood held in the storage yard after…
N Morsing, B Lindegaard
Leaching of inorganic wood preservatives – Investigating the relationship between leachability, dissociation characteristics and long-term leaching potential
2003 - IRG/WP 03-50199
…components is greatly affected by the leaching test method applied since not all methods equally consider the physical components responsible for leaching. These include: wetting of the wood and penetration of water (affected by dimensions, amount of end grain, permeability, duration and nature of water…
L Waldron, Y T Ung, P A Cooper
Leaching of active components from preservative-treated timber - Ongoing research: Status after approx. 4 months’ out-door exposure
2003 - IRG/WP 03-20276
…The project is focussed on developing a field trial method for investigating leaching.
According to BPD hazard assessment has to be carried out for biocide products and a part of that includes possible environmental impact of preservative treated wood. Leaching of active ingredients from treated wood has to…
N Morsing
International comparison of three field methods for assessing the in-ground resistance of preservative-treated and untreated wood to termites and fungal decay – Summary of observations after five years
2003 - IRG/WP 03-20261
…five locations in Australia, Thailand and the USA. Three methods of exposure were assessed (below-ground, graveyard and ground contact) for evaluating the in-ground termite and decay resistance of Pinus radiata D. Don sapwood stakes that had been vacuum pressure impregnated with CCA (Type C) and ACQ (Type D) each…
M Lenz, J W Creffield, T A Evans, B M Kard, C Vongkaluang, Y Sornnuwat, A F Preston
A field study on the suitability of the European lap-joint test
2001 - IRG/WP 01-20239
…preservatives out of ground contact in conjunction with methods for preconditioning test specimens prior to test" (FACT) one aim was to establish the suitability of the European lap-joint test (as it is described in ENV 12037:1996) to assess wood preservatives in the field in EHC 3. Scots pine and/or spruce…
M Grinda, Ö Bergman, H-V Borck, D Dickinson, P Esser, R Gründlinger, H Leithoff, S Molnar, L Paajanen, N Pfabigan, E D Suttie, F Thomassin, T Nilsson, J Van Acker, M Van Der Zee, A Voss
Attempt for developing a new method for above ground field testing of wood durability
2000 - IRG/WP 00-20199
…questions concerning the outdoor utilisation of wood. Such methods supply additional information and confirm or reject preliminary laboratory results. The European standard (ENV 12037, "lap-joint") for assessment of the durability of preservative treated wood in above ground testing has recently been proposed. It may…
N Terziev, M-L Edlund
The ground proximity decay test method
2000 - IRG/WP 00-20205
A decay field test method, which has been recently proposed for the standardization by the AWPA, is described for evaluating the relative performance of wood samples in a severe above ground situation exposed to the weather. Data is presented on the relative performance of…
A F Preston, P J Walcheski, K J Archer, A R Zahora, L Jin
International comparison of three field methods for assessing the in-ground termite resistance of materials - highlights after two years
1999 - IRG/WP 99-20157
…including CCA and ACQ-treated timbers, using the below-ground exposure, ground contact and graveyard methods against diverse termite faunas were provided in IRG/WP/98-20132. Further annual inspections have confirmed early trends and identified notable differences between sites and methods. Termites have…
M Lenz, J W Creffield, A F Preston, B M Kard, C Vongkaluang, Y Sornnuwat
Interim balance after 20 months of lap-joint exposure
1999 - IRG/WP 99-20164
…the performance of the resin treatments out of ground. The exposure of lap-joints showed that much more information can be obtained by this testing method than from laboratory testing methods which are usually applied to determine the biological resistance. Suggestions are made with regard to the assessment and…
M Sailer, A O Rapp, R-D Peek, A J Nurmi, E P J Beckers
Decay pattern in external wooden structures
2025 - IRG/WP 25-11055
…communities lack an understanding of the issues and methods for investigating and understanding rot damage. The deficiency in knowledge and awareness complicates the selection of the optimal repair method and, in the worst-case scenario, may exacerbate the progression of the damage.
J Mattsson, M S Austigard, A-C Flyen
Durability and molecular analysis of fungal communities in wood exposed above ground
2025 - IRG/WP 25-11068
…accessed according to the standard ENV 12037. Molecular methods were employed to identify the variety of fungi in the wood.
Siberian larch showed better performance compared to the species grown in Sweden after the first 10 years of exposure. However, despite the origin, the larch wood was decayed to index 4…
N Högberg, D Panov, G Daniel, N Terziev
Natural and enhanced durability of wood exposed above ground
2025 - IRG/WP 25-11079
…of wood species under a wide range of above-ground exposure scenarios. This extensive, long-term study involves over 1,700 test specimens, providing a standardised framework for comparing wood species under consistent and controlled conditions, such as uniform dimensions and exposure to specific weather…
R Digaitis, J Stenbaek, A W Christof, N Morsing, B Lindegaard
The iTrussT project – Advancements in timber bridge design, preservation, and monitoring
2025 - IRG/WP 25-20751
…fungicides for long-term protection in areas of high exposure, all while maintaining structural integrity. Third, advanced structural health monitoring technologies like ground-penetrating radar, ultrasound, and moisture sensors will be combined into one concept which enables real-time condition assessments,…
K-C Mahnert, U Hundhausen
Evaluation of moisture exclusion ability of wood using double-layer outdoor exposure tests
2025 - IRG/WP 25-41021
…outdoor use. We conducted previously double-layer outdoor exposure tests and investigated the relationship between moisture content over time and the progress of decay using an electric resistance moisture meter. In this study, we aimed to evaluate the moisture exclusion ability of wood more simply using the same…
T Osawa, R Noda, K Yamamoto
mpact of Fence Post Footings on Wood Post Durability
2025 - IRG/WP 25-41025
…and extend the service life of the post. After 9-years of exposure in Kincardine, Ontario, Canada in a site with decay and subterranean termites, we found elevated fence post footings were associated with less biodegradation than posts dug directly into the soil. The spike and boot installations were particularly…
D Wong, R Stirling