Your search resulted in 792 documents. Displaying 25 entries per page.
Chromated copper arsenate preservative treatment of hardwoods. Part 2: leaching performance of seven North American hardwoods
1997 - IRG/WP 97-30132
Seven North American hardwood species were treated with 2% CCA-C solution and fixed at temperatures of 21°C and 50°C and conditions of high relative humidity (95%) as described in Part 1 of this presentation. Red pine (Pinus resinosa) was included as a softwood for comparison. Adequately fixed wood blocks (99.9% chromium fixation) were exposed to leaching tests according to AWPA E11-87 test. Par...
T Stevanovic-Janezic, P A Cooper, Y T Ung
A laboratory bioassay method for testing preservatives against the marine borers Limnoria tripunctata, L. quadripunctata (Crustacea) and Lyrodus pedicellatus (Mollusca)
1990 - IRG/WP 4159
A laboratory culture and bioassay method is described for the marine borers Limnoria tripunctata, Limnoria quadripunctata, and Lyrodus pedicellatus. The methods were tested in a bioassay using established marine preservatives. The attack produced on blocks treated with CCA or creosote in some ways paralleled the attack found in the sea. Limnoria tripunctata attacked treated and untreated pine bloc...
L J Cookson
Isolation and identification of non-decay fungi affecting the performance of alkylammonium compounds
1993 - IRG/WP 93-10020
The isolation of DDAC tolerant fungi was carried out on lumber treated with a range of antisapstain chemicals containing DDAC as one of their active ingredients. The tolerant fungi were selected by using malt media spiked with DDAC (100 and 2500 ppm). Isolations were tentatively identified into a range of fungi commonly found associated with wood deterioration (i.e. Penicillium sp. and Trichoderma...
A K Doyle, J N R Ruddick
The performance of chlorothalonil after 4.5 years in the accelerated field simulator
1994 - IRG/WP 94-30041
The decay resistance of chlorothalonil in oil was examined in an accelerated field simulator (AFS). Pinus radiata D. Don and Eucalyptus regnans F. Muell. sapwood stakes were treated, placed in soil in the AFS, and monitored over 4.5 years. CCA type C treated stakes were included for comparison. Water and toluene treated control stakes were heavily decayed after 1-2.5 years. Oil treated controls, t...
L J Cookson
Marine performance of preservative treated Southern pine panels. - Part 1: Exposure in Newport, Oregon
2000 - IRG/WP 00-10368
The ability of selected wood preservative to protect southern pine sapwood against marine borer attack was evaluated over a 6 year period in Yaquina Bay, Oregon. The site exposed the wood to potential attack by both Teredo navalis and Limnoria spp. Both creosote and CCA provided excellent protection at moderate retentions, while ACQ produced slight differences in performance depending on the coppe...
R G Rhatigan, J J Morrell, A R Zahora
Report on the efficacy and performance of the insecticide candidate termiticide in H2 field trials
2004 - IRG/WP 04-10516
This paper explains the field results of phenol pyrazole treated timber against in an above ground mound colonies of Coptotermes acinaciformis (Froggatt). C. acinaciformis (‘termites’) are the major pest of human structures throughout tropical and sub tropical regions, causing billions of dollars in damage to timber-in-service worldwide. The result of this field test have shown that candidate ...
B M Ahmed, P Vinden, J Hann, J R J French
New methods for nondestructive inspection of timber in buildings
1995 - IRG/WP 95-20070
In these years older buildings are renewed in most European countries on a large scale, and new techniques are needed for both inspection and eradication of fungal attacks. Heat treatment as a means of eradicating the dry rot fungus has been used in Denmark during the last decade. This technique minimises the structural damage to the building, whilst at the same time reducing costs by up to 50%. T...
B Madsen, O V Frederiksen
Evaluation of bending strength by non-destructive methods of Ezomatzu with white pocket rot
1991 - IRG/WP 2371
The possibility of application of three non-destructive methods was examined for evaluation of bending strength of ezomatsu (Picea jezoensis CARR.) with white pocket rot. As non-destructive methods, the measurements of ultrasonic wave propagation time, impact-induced stress wave propagation time and penetration depth of pin of "PILODYN Wood Tester" were applied to compare with visual evaluation of...
T Tanaka
Stability, performance and distribution of propiconazole (R 49362) in acceleratedly aged wood
1991 - IRG/WP 3647
The permanency of propiconazole (R 49362 - WOCOSENÔ technical - Janssen 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 to the E...
A R Valcke, M Stevens
Comparison of the in-ground performance of pigment emulsified creosote (PEC) and high temperature creosote (HTC)
2000 - IRG/WP 00-30217
A long-term field trial was conducted in Australia to compare the in-ground performance of two oil-borne preservative formulations, conventional high temperature creosote (HTC) and a modified creosote formulation, pigment emulsified creosote (PEC). Three retentions (50, 100 and 200 kg/m³) were targeted for each formulation. An additional retention of PEC formulation (308 kg/m³), which contained ...
J W Creffield, H Greaves, N Chew, N K Nguyen
Performance of copper-chrome formulations in ground contact in five test sites in New Zealand
1996 - IRG/WP 96-30113
Copper-chrome-arsenate (CCA), copper-chrome-boron (CCB), copper-chrome-fluoride (CCF) and copper-chrome-phosphate (CCP) have been tested at four retentions each in ground contact (25 x 50 x 500 mm³ radiata pine sapwood stakes) for 16 years in five test sites in New Zealand. Results to date show that test site characteristics have a marked effect on relative performance. In a warm and wet site (an...
M E Hedley, R N Wakeling, J Foster, B E Patterson
The potential application of rapid gas-chromatographic assay of microbial respiration to the monitoring of wood decay in field trial situations
1983 - IRG/WP 2196
Gas chromatographic detection of microbial activity (C02 production) within stakes in a field trial situation would appear to provide a sensitive, non-destructive and relatively rapid method for the quantitative assessment of preservative treatments. Most consistent results were obtained when stakes were removed from the soil, washed, saturated with water and incubated in sealed PVC tubes at 25°C...
M A Line
In ground performance of wood treated with a substituted isothiazolone
1990 - IRG/WP 3612
Isothiazolones (I.T.A.'s) are a class of biocides that have potential for use as wood preservatives. The substituted ITA, RH-287, (4,5,dichloro-2-n-octyl-isothiazolone-3-one) is being evaluated as a broad spectrum wood preservative. The evaluation program includes in ground stake tests which were established at two test sites in Mississippi, USA The tests used southern yellow pine treated...
L E Leightley, D D Nicholas
Preliminary results from the field experiment to determine the performance of preservative treated hardwoods with particular reference to soft rot. The four reference timber
1980 - IRG/WP 3164
The results given in the Tables 1-4 each refer to one of the four reference species treated with four solution concentrations of CCA as recorded from each test site. The species are: Alstonia scholaris, Betula pendula, Fagus sylvatica, Pinus sylvestris. The treatments were: Untreated, 0.66% CCA, 1.53% CCA, 3.01% CCA, 5.60% CCA. Each figure is an average of the ratings recorded for each replicate o...
J F Levy, D J Dickinson
Performance of Oriented Strandboard, Medium Density Fiberboard, Plywood, and Particleboard Treated with Tebuconazole in Supercritical Carbon Dioxide
2005 - IRG/WP 05-30364
The performance of oriented strandboard (OSB), medium density fiberboard (MDF), particleboard and plywood treated with tebuconazole using supercritical carbon dioxide was investigated over a 48 month exposure under harsh above ground conditions in Hilo, Hawaii. Samples treated to low retentions (<0.20 kg/m3) tended to experience decay at rates that were only slightly lower than those found wit...
J J Morrell, M N Acda, A R Zahora
Performance of Borate-Treated Wood Against Reticulitermes flavipes in Above-Ground Protected Conditions
2003 - IRG/WP 03-30309
Termites cause economically significant damage in Canada only in a few localized areas. However, one of those is in Canada’s largest city, Toronto, Ontario. In 1996, a test was set up of borate-treated lumber above ground, protected from rain but exposed to subterranean termites (Reticulitermes flavipes) in Kincardine Ontario. The material included western hemlock and amabilis fir lumber trea...
P I Morris, J K Grace, K Tsunoda, A Byrne
Copper based water-borne preservatives: Copper adsorption in relation to performance against soft rot
1987 - IRG/WP 3452
As part of a fundamental study concerned with the performance of copper based water-borne preservatives the adsorption of copper from aqueous solutions by 4 hardwood and 1 softwood species has been studied. Experiments were conducted to determine the influence of solution pH, solution concentration and solution temperature. The results obtained were consistent with an acid form ion-exchange mechan...
P M S Rennie, S M Gray, D J Dickinson
Performance of groundline bandage remedial treatments in western US species transmission poles
1993 - IRG/WP 93-30019
Groundline bandages are an important element in remedial treatment strategies for utility poles in the United States. Several bandages containing new or reformulated components have recently been developed but have not been adequately tested. This paper reports on the degree of diffusion of copper naphthenate, boron, and sodium fluoride from groundline bandages into pressuretreated Douglas-fir, po...
P G Forsyth, J J Morrell
Comments on leaching in view of accelerated testing
1977 - IRG/WP 294
We developed an accelerated test for leaching at elevated temperatures (75-85°C). This test was used for the examination of 11 preservative formulations containing Cu, Zn and As. The data obtained from these experiments were compared with data on some formulations tested by ASTM standard leaching test. The method consists in making a large surface to volume ratio of wood from a treated block by c...
J Rak
Effect of post-treatment drying schedule on the modulus of elasticity of CCA-treated southern pine dimension stock using nondestructive methods
1987 - IRG/WP 3413
This paper describes the results from the nondestructive testing for modulus of elasticity (MOE) of southern pine (Pinus sp.) 2 x 6's treated with chromated copper arsenate and redried using three commercial kiln schedules. The data indicate that redrying CCA-treated southern pine dimension stock treated to above-ground retentions (4 kg/m³) has no deleterious effect on the MOE, regardles...
H M Barnes, S Moore
Effect of treatment process on performance of copper-chrome-arsenate. Part 1: Fungus cellar tests
1995 - IRG/WP 95-40045
Pinus radiata sapwood stakes 20 x 20 x 400 mm³ were treated with CCA Type C using a range of concentrations and three treatment processes; Bethell, Lowry and Rueping. Preservative retention was determined by chemical analysis of treated material. Following fixation, fungus cellar stakelets, 5 x 10 x 180 mm³ were cut from treated material and after leaching were exposed in unsterile soil beds in ...
M E Hedley, J Anderson, J B Foster, B E Patterson
Evaluating the performance of wood preservatives against fungi
1974 - IRG/WP 247
A compilation is made of results published by various workers for agar/block laboratory tests of the effectiveness of wood preservatives against 11 species of wood destroying Basidiomycetes and one species of soft rot fungus. Preservatives include creosote, boron, metal/arsenic mixtures, metallic naphthenates, chlorinated naphthalene, chlorinated phenols and tri-n-butyl tin oxide. The results are ...
R Cockcroft
Effect of test site location on in-ground preservative performance after 6 years
2001 - IRG/WP 01-20231
Pinus radiata test stakes were treated with 4.1 kg/m3 of CCA and Fagus sylvatica with 6.1 kg/m3 of CCA. Both wood species were also treated with a copper plus triazole preservative (3 kg/m3 of copper) and chlorothalonil plus chlorpyriphos in oil (4.8 kg/m3 chlorothalonil). Furthermore, P. radiata was treated with ammoniacal copper plus a quaternary ammonium compound (2.6 kg/m3 copper) and a 60/40 ...
R N Wakeling
Determination of corrosive effect of liquid wood preservatives to metals – First experiences with a National Standard which is in revision
2006 - IRG/WP 06-20321
The development of standards is an essential tool to characterise different kind of materials and products. An important aspect during the development of a new product is to check the corrosion behaviour with other materials. Corrosion can cause several problems like pitting corrosion. Consequently the knowledge concerning the corrosive effect of liquid wood preservatives is important due to the s...
E Melcher
Method of embedding and staining of wood after biological testing to support the identification of decay type
1998 - IRG/WP 98-20131
A method for preparing wood for microscopic analysis after decay testing is described, with special regard to a novel fast simultaneous staining, which helps to identify different types of decay. The novel staining process is explained as well as the embedding of heavily decayed samples in polyethylene glycol (PEG) and picking up of sections by transparent adhesive tape. Special feature of the int...
A O Rapp