Your search resulted in 3006 documents. Displaying 25 entries per page.
Accelerated surface mould testing for exterior wood treatment in Temperate, Tropical and Laboratory environments
2023 - IRG/WP 23-20699
…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…
A Nazeri, J Stenbaek, T R Laursen, A H H Wong, B M Hasnul
Development of accelerated decay test for CLT using a fungus grown on agar medium
2019 - IRG/WP 19-20664
…when evaluating its durability of CLT. To develop the accelerated decay test for CLT regarding with the cross sections, we examined the acceleration of deterioration by contacting untreated CLT samples of the dimension 150×150×150 mm with fungus (Fomitopsis palustris) grown in agar medium in plastic container…
T Miyauchi, K Kambara, W Ohmura, T Mori, H Matsunaga, N Hattori
Selection of Wood-Rotting Basidiomycetes for Inoculation of an Accelerated Soil Bed Test
2014 - IRG/WP 14-20543
There is a need for a test method that guarantees exposure of treated wood to soil and preservative-tolerant wood-rotting basidiomycetes as standard field tests do not do this reliably. The ability of a range of selected wood-rotting basidiomycetes to grow through unsterile…
P I Morris, A Uzunovic, J Ingram
The development of accelerated test systems to evaluate the durability of framing timber
2014 - IRG /WP 14-20547
Various accelerated decay resistance trials including small simulated wall units, samples exposed in enclosed tanks and ‘I’ samples in stacks have been explored and used to test the durability of treated and untreated radiata pine framing at Scion since 2001.…
T Singh, D Page, J van der Waals
Accelerated H3 above-ground decay testing
2013 - IRG/WP 13-20520
…in Australia and one in New Zealand, as well as in two Accelerated Field Simulators. The aim was to find a method that would shorten the time required for evaluating new preservatives and protection systems. One-quarter H3 retentions were installed, as first results suitable for registration occur when these…
L J Cookson, D Page, T Singh
Effect of an antioxidant on the efficacy of organic wood preservatives in an accelerated soil contact decay test
2012 - IRG/WP 12-30583
…BHT was exposed to unsterile soil and monitored for decay by dynamic MOE. It was found that the efficacy of both preservative systems was enhanced when BHT was added to the formulations. The use of Dynamic MOE to evaluate the progression of wood decay appears to be far superior to visual ratings.
D D Nicholas, J Shi, T P Schultz, L Sites
Accelerated H3 above-ground decay trials in Australia
2009 - IRG/WP 09-20411
…year. At Clayton near Melbourne, untreated Pinus radiata test specimens had highest moisture content in the ‘rot box’ design, followed by the ground proximity and ‘embedded test’, while ‘flat panels’ were driest. Most extensive decay occurred in tests where wood separators between test specimens had…
L J Cookson, J Carr
Measurement of wood decay by dynamic MOE in an accelerated soil contact test
2008 - IRG/WP 08-20390
Current laboratory and field testing of preservatives involves various techniques to determine the extent of fungal attack, including visual inspection, mass loss, and static bending and compression strength measurements. The objective of this study was to compare decay measurement by…
Gan Li, D D Nicholas, T P Schultz
To decay or not to decay: An accelerated field test of the validity of the Scheffer index
2008 - IRG/WP 08-20392
…Index was introduced in 1971 to predict the relative decay hazard of untreated wood exposed above-ground. Precipitation and temperature parameters are used in the calculation. A higher Scheffer Index value implies a greater risk of decay. An accelerated 18-month study using seven field sites with Scheffer…
G M Larkin, P E Laks
Effects of chlorothalonil (CTN) and butylated hydroxytoluene (BHT) on microbial communities involved in the deterioration of wood using T-RFLP I: Accelerated laboratory decay study
2006 - IRG/WP 06-20332
…for its synergistic effects with CTN. Results from an accelerated decay test will be presented. The accelerated decay test evaluates the performance of wood preservatives in conditions optimized to promote accelerated microbial degradation. This study is evaluating six retentions in two different soil mixtures…
G T Kirker, M L Prewitt, S V Diehl
Standard and accelerated testing of boron-additive wood protection systems
2005 - IRG/WP 05-30381
…systems for above ground applications by means of field testing. The two field test procedures used are based on the L-joint test described in the European standard EN 330. For the first set up the boron treated timber was coated in accordance with the standard EN 330 system. The second set up is based on an…
A Mohareb, J Van Acker, M Stevens
Accelerated laboratory soil contact decay test using soil amended with composted wood
2004 - IRG/WP 04-20284
The effect of amending soil with wood compost on the decay rate of wood wafers in contact with the unsterile soil, as measured by radial compression strength loss, was explored. It was found that the addition of composted wood to the soil significantly increased the wood decay rate. The reason for this…
D D Nicholas, H Borazjani, T Schultz
In-house accelerated method for testing decay resistance of treated wood
2004 - IRG/WP 04-20286
…To avoid multiple expenses, in-house fungistatic tests are essential. Our goal was to develop in-house usable, simple but reliable and reproductive procedure for testing decay resistance of the Sansin priming formulae without a need for special testing equipment.
Our preliminary trials have proved that…
N Vidovic
Estimation of service life of durable timber species by accelerated decay test and fungal cellar test
2002 - IRG/WP 02-20249
…red cedar showed no significant percent mass losses by accelerated decay test according to the JIS Z2101, but some of them are degraded during fungal cellar test for 4 years . The decay rating (0:sound to 5:totally decayed) of them after 4 years exposure was 1.0, 2.0, 0.0, 1.0, 0.0, 2.3, 5.0 respectively. This…
K Yamamoto, I Momohara
Accelerated laboratory testing of preservatives on 13 North American wood species
1999 - IRG/WP 99-30201
…was evaluated on 13 North American wood species using 7 decay fungi in a modified soil block test. Most preservatives were capable of providing protection at their recommended above ground and soil contact use levels. Many decay fungi caused substantial weight losses on blocks treated with chlorothalonil, copper…
J J Morrell, C M Freitag
The accelerated L-joint test method for determination of the out of ground natural durability
1998 - IRG/WP 98-20146
The accelerated L-joint test incorporates a moistening device and uses a close end water trap in an open joint connection with a laminated tenon member consisting of the perishable reference wood species scots pine sapwood and beech.
After one year of exposure…
J Van Acker, C Brauwers, M Stevens
Accelerated testing for out of ground contact using natural biological preconditioning: Part 2
1997 - IRG/WP 97-20108
…colonisation during outdoor exposure prior to laboratory decay testing. An EN 84-type leach trial was carried out on unexposed samples. Periodic microbial isolations, moisture content, permeability and weight loss tests were also conducted. The experiment ran for 12 months. The colonisation of the miniblocks by…
S Molnar, D J Dickinson, R J Murphy
Accelerated wood decay in a soil bed test under greenhouse conditions compared with a stake test under field condition
1991 - IRG/WP 2384
The rate of decay of oak, beech, Douglas fir, pine and spruce stakes in an outside test field were compared with the decay rate of the same species in a greenhouse soil-bed test. Strength loss after four and six months respectively was measured by determining the…
J E Polman, S G Michon, H Militz
Stability, performance and distribution of propiconazole (R 49362) in acceleratedly aged wood
1991 - IRG/WP 3647
…Pharmaceutica) in wood was examined in an 18 month storage test, an evaporative ageing study (EN 73), a volatilization stress experiment, and water-leaching studies (EN 84). The biological efficacy against two brown rot fungi: Coniophora puteana BAM Ebw. 15 and Gloeophyllum trabeum BAM Ebw. 109 was assessed according…
A R Valcke, M Stevens
Fungal resistance and accelerated weathering of Wood-Plastic composites reinforced with Maritime pine wood flour
2016 - IRG/WP 16-40750
…ratios with and without UV stabilizers and biocide were tested. One biocide and two UV stabilizers were tested and their impact on the performances of the elaborated composites was assessed by artificial weathering and fungal decay tests. Results showed that formulation with biocide exhibited low masse losses.…
M Jebrane, T Fournier, N-E El Bounia, F Charrier-El Bouhtoury
Accelerated weathering and fungal resistance of wood modified with isopropenyl acetate
2016 - IRG/WP 16-40764
…wood surfaces were exposed to UV light source in an accelerated weathering tester to evaluate UV resistance. Anti-swelling efficiency (ASE) and fungal resistance of modified wood were also evaluated. Modified wood showed good ASE. Decay resistance of modified wood was evaluated by exposing unmodified and…
G B Nagarajappa, K K Pandey
Accelerated ageing of preservatives in treated wood
1988 - IRG/WP 3476
New preservatives are tested in the laboratory and often in field tests before they are used commercially. Some preservatives, however, tested in the laboratory do not show the expected stability when used in service. The differences between laboratory tests and practical use can…
M-L Edlund, B Henningsson, B Jensen, C-E Sundman
Relative performances of DNBP and CCA wood preservatives in accelerated decay tests
1988 - IRG/WP 3496
…tyl-4,6-dinitrophenol (DNBP) was compared with that of CCA. Test blocks of Pinus patula and Eucalyptus grandis were impregnated to precisely known retentions of approximately 3, 6, and 10 kg/m³ CCA and solvent-borne DNBP respectively. They were then challenged in decay tests comprising soil burial and exposure to…
W H Schnippenkoetter, L D Abraham, A A W Baecker
Studies on accelerated ageing procedures with TBTO-treated wood
1985 - IRG/WP 2244
The efficacy of various procedures for accelerated ageing of organotin based wood preservatives in treated wood has been investigated. It was found that leaching of the treated wood samples in water according to the European Standard EN 84 was not satisfactory for organotin based preservatives and…
J Jermer, M-L Edlund, B Henningsson, W Hintze
Questionnaire: Facility for accelerated stake tests in unsterile soil
1981 - IRG/WP 2166
An acceptable name for this type of test facility has not yet been devised, but it has previously been referred to as a FUNGUS CELLAR or as a TROPICAL DECAY HOUSE. The attached pamphlet (What's New in Forest Research No.65) describes in broad terms the facility used for this purpose at…
J A Butcher