Your search resulted in 2217 documents. Displaying 25 entries per page.
Wood decay fungi from New Zealand ‘leaky’ buildings: PCR identification and laboratory decay tests of wood preservative-treated Pinus radiata (Part 1)
2007 - IRG/WP 07-10620
…toxic thresholds were obtained for all preservatives tested. Results suggested that the minimum IPBC retention specified by Hazard Class 1.2 of NZS3640:2003 (0.025% m/m) is on the low side, and demonstrated complete loss of efficacy of boron at 0.4% m/m boric acid equivalent (BAE) after the 2 week leaching…
D Stahlhut, R L Farrell, R Wakeling, M Hedley
Lyctine susceptibility testing and dealing with rarely susceptible hardwood species
2007 - IRG/WP 07-10607
…ratings are not acceptable. Timber specimens were spot tested for starch content, and exposed to three species of lyctine beetles in an insectary. New criteria were developed to divide the problematic ‘rarely susceptible’ species, including naming a species non-susceptible if significant attack was…
L J Cookson, J Carr, N Chew, J W Creffield
Comparison of laboratory termite test methods
2007 - IRG/WP 07-20365
Seven standardized laboratory tests with termites were evaluated. The bioassays were made in accordance with EN 117, SAA32 E08, SAA32 E09, Ebw 02, the American Wood-Preservers’ Association (AWPA) Standard E1-97, the Japan Wood Preserving Association (JWPA) Standard 11 (1) and The…
H-U Kruschinski, W Unger, A F Preston
Efficacy of chitosan in combination with GRAS (Generally Recognised As Safe) compounds as a potential wood preservative
2007 - IRG/WP 07-30414
…nutrient medium suggested that some of the GRAS compounds tested including sodium benzoate, potassium sorbate and ascorbic acid had a synergistic effect when combined with chitosan against both test fungi. However the degree of activity varied depending on concentration used and species tested.
Synergy between…
C Chittenden, K Thämelt, T Singh
Protection of wood for above ground application through modification with a fatty acid modified N-methylol/paraffin formulation
2007 - IRG/WP 07-40378
…Standard EN 335-1.
A formulation containing fatty acid modified N-methylol/paraffin and an aluminium salt catalyst was used to change the material properties of wood in order to protect wood from fungal decay and deterioration through weathering. Beech wood (Fagus sylvatica) treated to weight percent gains…
Nguyen Hong Minh, H Militz, C Mai
Synthesis of boric acid ammonium oleate salt for wood preservation: Leachability and termite resistance test
2007 - IRG/WP 07-30435
A new chemical compound coupling boric acid and oleic acid through a joint of ammonium salt has been produced and its synthesis followed and validated by Fourier Transformed Infra Red (FTIR). This compound named ammonium borate oleate (BAO) combining biocidal properties of boron and water…
F Lyon, A Pizzi, Y Imamura, M F Thevenon, S N Kartal, J Gril
Developments in Borate Treatment of Canadian Species for Decay and Termite Resistance
2007 - IRG/WP 07-30443
…formosanus Shiraki in protected above-ground field tests simulating sill plate use. Since the biggest disadvantage of boron-treated wood is the chemical loss when in contact with liquid water, research has been carried out on boron fixation, but the most practical and successful method could be application of…
Jieying Wang, P Morris, S McFarling, T Byrne
Borate Protection and Termites: Variation in Protection Thresholds Explained
2006 - IRG/WP 06-20324
…by differences in termite species, timber species and test methodology. Laboratory data indicate a borate retention of 0.5% mass/mass (m/m) boric acid equivalent (BAE) would cause > 90% termite mortality and restrict mass loss in test specimens to 5%. Field data generally suggest that borate retentions…
B C Peters, C J Fitzgerald
The role of oxalic acid in tolerance to N’N-naphthaloylhydroxylamine in Tyromyces palustris
2006 - IRG/WP 06-10584
…tolerance, an additional ten isolates of T. palustris were tested in soil-block bottles for 12 weeks against southern yellow pine wood blocks vacuum treated with 0.5 % NHA. Of the isolates tested, only TYP-6137 showed complete tolerance to NHA. The other 10 isolates showed varying degrees of tolerance, but at a lower…
R A Arango, C A Clausen, F Green III
Is Field Test Data from 20 x 20mm Stakes Reliable? Effects of Decay Hazard, Decay Type and Preservative Depletion Hazard
2006 - IRG/WP 06-20327
…treated 20 x 20 x 500 mm Radiata pine and Fagus sylvatica test stakes across 13 field test sites in New Zealand and Queensland Australia were determined.
Radiata pine treated with an ammoniacal copper quaternary preservative (ACQ) (1.56% m/m a.i.) and copper chrome arsenate (CCA) (0.72% m/m a.i.) was susceptible…
R Wakeling
Above and Below-Ground Depletion of Copper, Chromium and Arsenic from Pinus radiata and Fagus sylvatica at Thirteen Test Sites in New Zealand and Australia
2006 - IRG/WP 06-30402
…arsenate preservative (CCA) from 20 x 20 x 500 mm field test stakes after 5.5 and 4.5 years for pine and beech respectively. At least 5 sacrificial stakes were used to produce site means. Site and wood species had a major effect on copper, chromium and arsenic loss from CCA treated pine and beech. At the most…
R Wakeling
Serpula lacrymans, The Dry Rot Fungus and its Tolerance towards Copper-based Wood Preservatives
2005 - IRG/WP 05-10555
…about tolerance toward copper components, a soil block test was undertaken to clarify the effect of two copper based preservatives, copper citrate and ACQ-D, on the dry rot fungus, Serpula lacrymans compared to an alternative non-copper containing wood preservative. The extensive use of copper-based wood…
A C Steenkjær Hastrup, F Green III, C A Clausen, B Jensen
Reduction of preservatives leaching from wood by the application of animal proteins
2005 - IRG/WP 05-30387
…was made on the basis of mass losses caused by the test fungus action against treated wood which was subjected to leaching with water. The investigations were performed for Scots pine wood (Pinus sylvestris L.) treated with preservatives containing solutein, albumin or casein and subjected to appropriate…
B Mazela, I Ratajczak, M Bartkowiak
Response of the Formosan Subterranean Termite (Coptotermes formosanus) to Cellulose Insulation Treated with Boric Acid in Choice and No-Choice Tests.
2004 - IRG/WP 04-10532
…a cellulose insulation material containing11.1% boric acid was tested in choice and no-choice bioassays. We examined tunneling behavior and mortality of termites exposed to treated and untreated insulation material in miniature simulated wall voids. In a choice test termites tunneled through untreated…
M E Mankowski, J K Grace
Evaluating the potential of modified wood for use in marine environments using a short-term laboratory bioassay
2004 - IRG/WP 04-10525
…marine structures. In this study a screening laboratory test using the wood-boring isopod crustacean Limnoria quadripunctata was used to assess the durability of chemically modified Pinus sylvestris, Pinus radiata and Picea sp. Most of the treatments used a combination of one of two of types of the resin…
L M S Borges, S M Cragg, M van der Zee
Economical analysis of the chemicals used on remediation copper, chromium and arsenic from out of service CCA-treated utility poles in Turkey
2004 - IRG/WP 04-50217
…remediation of CCA treated wood.
In this study, oleic acid, chromotropic acid and citric acid were used to remove Cu, Cr and Ar from CCA treated wood samples.
The objective of this study is to determine the chemical that provides the maximum Cu, Cr and Ar removal from CCA treated wood as well as the cost…
E D Gezer, D Toksoy, Ü C Yildiz
Effectiveness of the new chemical wood preservative Borosol 9? against a house longhorn beetle Hylotrupes bajulus
2004 - IRG/WP 04-30355
…preservative Borosol 9, consisting of boric acid - alkanolamine complex, is a new wood preservative with proven efficacy against wood decay fungi. However, we were interested in its efficacy against larvae of house longhorn beetle (Hylotrupes bajulus). Thus, experiment according to the EN 46 procedure…
G Babuder, M Petric, F Cadež, M Humar, F Pohleven
Leachabilty and efficacy of fatty acid derived boron esters as wood preservatives - leachability and efficacy of fatty acid derived boron esters as wood preservatives
2004 - IRG/WP 04-30351
…preservatives. Scots pine sapwood (Pinus sylvestris L.) test specimens were vacuum treated at different concentrations of BAE (Boric Acid Equivalent) of each boron ester active ingredient with and without 10% addition of commercial resin product. Stand-alone boron treatment using 1% BAE disodium octaborate…
A Mohareb, J Van Acker, M Stevens
Laboratory Evaluation of the Formosan Subterranean Termite Resistance of Borate-treated Rubberwood Chipboard
2004 - IRG/WP 04-30359
Both no-choice and two-choice 4-week AWPA laboratory tests were performed to evaluate the resistance of borate-treated rubberwood (Hevea brasiliensis) chipboard prepared from a commercial mill run, against the Formosan subterranean termite Coptotermes formosanus. Boric acid (technical granular) was incorporated…
A H H Wong, J K Grace
Field Testing of Copper Carboxylate Preservatives
2003 - IRG/WP 03-30322
This paper details our ongoing experience with field testing of copper naphthenate and other copper carboxylate preservative systems. Results from field stake tests at an AWPA Hazard Zone 4 test site are presented. In general, copper carboxylates made with ‘synthetics’ yielded results equivalent to or…
H M Barnes, M G Sanders, T L Amburgey
Efficacy of copper:propiconazole and copper:citrate systems in ground contact exposure at a site with copper tolerant fungi
2003 - IRG/WP 03-30305
…or 29 kgm-3 retentions, or the same ACC levels plus citric acid at 38% of the CuO level. These ground-contact stakes were installed at a test plot which has copper tolerant fungi, and inspected regularly for fungal and termite degradation. At the most recent inspection, the copper azole stakes had been exposed for…
D D Nicholas, T Schultz
An anti-termite formulation for soil treatment with natural products and its efficacy against Coptotermes formosanus Shiraki
2003 - IRG/WP 03-30319
…was developed. The formulation was composed of decanoic acid (n-capric acid, an fatty acid derived from coconut oil with ten carbons) as an active ingredient and other natural products. Experiments to examine the efficacy of the formulation against Coptotermes formosanus Shiraki were conducted at the termite field…
S Yoshida, T Nakagaki, A Igarashi, A Enoki
Accidental mold/termite testing of high density fiberboard (HDF) treated with borates and N’N-naphthaloylhydroxylamine (NHA)
2003 - IRG/WP 03-10462
…from beech and pine furnish (50:50) and treated with boric acid (0.1-3%), borax (0.1-3%) or N'-N-(1,8-naphthalyl) hydroxylamine (NHA) (0.1-1%) prior to gluing with urea formaldehyde (UF) resin in order to determine resistance to Eastern subterranean termites (Reticulitermes flavipes Kollar), the most…
S N Kartal, H H Burdsall Jr, F Green III
A comparison of fatty acid and molecular profiles for identification of wood colonizing basidiomycota
2003 - IRG/WP 03-20278
…employed to detect and identify wood decay fungi are Fatty Acid Methyl Ester (FAME) analysis and Restriction Fragment Length Polymorphism (RFLP) analysis. A FAME library and RFLP library for 9 species and up to 10 strains within each species have been developed. The profiles generated by these methods have been…
T C McElroy, L Prewitt, S V Diehl
Effect of protective additives on leachability and efficacy of borate treated wood
2002 - IRG/WP 02-30290
…sylvestris) and poplar (Populus trichocarpa x deltoides) test samples were vacuum treated with 1 % BAE (Boric Acid Equivalent) disodium octaborate tetrahydrate (DOT) solutions containing various additives e.g. glycerol/glyoxal, polyvinylpyrrolidone (PVPY), a commercial resin compound and a commercial water…
A Mohareb, J Van Acker, M Stevens