Your search resulted in 737 documents. Displaying 25 entries per page.
Practical experiments with Boracol 10 Rh used as a fungicide in the repair process after attack by the dry rot fungus (Serpula lacrymans)
1987 - IRG/WP 3458
The test is carried out in an old house in Nyhavn, Copenhagen. The roof and the walls close to were heavily attacked by dry rot fungus (Serpula lacrymans) because damage to the zinc covering the frontspice were letting in water to the wood and wall construction. An attack by the dry rot fungus is more complicated to repair compared with other wood destroying fungi because beside the damage on wood...
J Bech-Andersen
Penetration as Key Factor for Determining the Performance of Wood Preservatives
2004 - IRG/WP 04-20293
Stakes of Scots pine sapwood with a dimension of 4 x 4 x 75 cm³ were impregnated with preservatives containing 2 % of propiconazole which had passed the EN 113 test criteria without any problems. The
penetration of the colourless preservative was determined successfully by a fungal screening test described by Sutter (1978). The test revealed the insufficient penetration behaviour within the gi...
H Leithoff, I Stephan, R-D Peek
Mobility of zinc borate wood composite preservative
1997 - IRG/WP 97-30153
Zinc borate (ZB) is being used as an antifungal and insecticidal wood preservative for flake/strand-based composites. Data is reported on the laboratory and field leaching behavior of ZB when contained in apen flake composites. In general, the performance results correlate with leaching hazard. Although the boron in ZB is more resistant to depletion than in sodium borates, the ZB boron will deplet...
P E Laks, M J Manning
Preliminary testing of an improvised wood preservative mixture applied against dry wood beetles
1986 - IRG/WP 1308
An improvised wood preservative mixture was preliminarily tested in situ against some dry wood beetles which had infested structural timbers in a semi-finished building. The results obtained should encourage further research towards mobilizing/improvising locally available resources in the face of scarce standard wood preservatives, against the background of a dilemma in wood utilization in the de...
M O Akanbi, E M Bayode, A A Alabi, J Gbadebo
Special seminar on screening techniques for potential wood preservative chemicals
1978 - IRG/WP 2113
This paper continues following issues:
I. SCREENING INSECTICIDES
1) R W Berry (BRE/PRL, UK): Screen testing of insecticides for use in remedial wood preservatives.
2) D J Cross (FRI, New Zealand): Rapid screening of contact insecticides for use on forest products.
3) C R Coggins; A Forsyth; A E Glaser (Rentokil, UK): Experience in the use of indicative screening techniques for termiticides.
...
Anonymous
Treatment of rubberwood (Hevea brasiliensis)
1997 - IRG/WP 97-40081
In this study treatability of rubberwood, timber from rubber trees (Hevea brasiliensis) was investigated by using both pressure and non-pressure methods. Samples with 4 cm by 4 cm cross section were sawn from the logs which were harvested from a plantation located in Batu Pahat, Johor, Malaysia. Full-cell and cold soaking methods were employed using Copper Chrome Arsenate (CCA) for the experiments...
S Hiziroglu
Influence of preservative treatment on the glueing of the members of glued laminated frames and effectiveness with respect to newly hatched larvae of the house longhorn beetl
1971 - IRG/WP 203 E
The object of the work is to check the general properties of a glued laminated beam after treatment of the members composing it by means of commercial insecticidal and fungicidal formulations in clear solvent under the most common conditions of manufacture. The species used have been spruce, redwood and Douglas fir in planed boards of 80 cm long, 14 cm wide and 20 mm thickness at about 12% moistur...
J Guillemain-Thévenot
Influence of different treatment parameters on penetration, retention and bleeding of creosote
2003 - IRG/WP 03-40255
Creosote is an extensively used preservative for transmission poles and sleepers. The purpose of this research was to investigate the treatment parameters necessary to achieve full sapwood penetration and minimum required retention and to avoid bleeding of creosote. It was carried out as a part of the European research project WOODPOLE. Transmission poles of Scots pine (Pinus sylvestris L.) previo...
Ö Bergman
Preservative treatment of wood-based composites with a mixture formulation of IPBC-silafluofen using supercritical carbon dioxide as a carrier gas
2003 - IRG/WP 03-40251
Wood-based composites treated with a mixture formulation of a fungicide, 3-iodo-2-propynyl butylcarbamate (IPBC) and a termiticide, silafluofen using supercritical carbon dioxide (SC-CO2) as a carrier solvent were tested for their resistance to decay and termite attack in the laboratory. The treatment solution was prepared by mixing both biocides (IPBC 10 + silafluofen 1) with a co-solvent, ethano...
K Tsunoda, M Muin
Protection of rubberwood timber. Part 1: Impregnation with boron preservatives
1989 - IRG/WP 3551
Rubberwood (Hevea brasiliensis) were treated with a 3% proprietary mixture of borax/boric acid using three different treatment schedules i.e. full-cell, full-cell to refusal and full-cell with 12 cycles of vacuum/pressure. Freshly cut samples had mean preservative retentions of 187 kg/m³, 214 kg/m³ and 178 kg/m³ respectively. Pre-air dried samples for one week had retentions of 252 kg/m³, 308 ...
L T Hong, C C K Liew
Suitability of propiconazole (R 49362) as a new-generation fungicide
1989 - IRG/WP 3529
Propiconazole (R 49362), an anti-fungal triazole-compound of Janssen Pharmaceutica, has been extensively tested to determine its potential use as a wood preserving fungicide. Various tests in both private laboratories and official institutes indicate a good activity against Basidiomycetes (brown and white rot) and Ascomycetes (blue stain-in-service). The active ingredient seems very resistant to w...
A R Valcke
Optimisation of an analytical method for the determination of total fluoride in preservative-contaminated soils using water steam distillation and an ion-selective electrode
1999 - IRG/WP 99-20153
This paper describes a simple modified procedure for the quantitative fluoride determination of different origin in a soil matrix using a water steam distillation and an ion-selective electrode. Distillation methods generally require a preliminary preparation step like fusing. The modified method presented here is based on the direct distillation of fluoride so that no further sample preparation i...
E Melcher
Studies of the mechanism of chromated-copper preservative. Fixation using electron spin resonance
1992 - IRG/WP 92-3701
Two softwoods and one hardwood species were treated with chromium trioxide, copper sulphate, chromated-copper wood preservative (CCA). The treated wood samples were analyzed during fixation by electron spin resonance (ESR). ESR spectra indicated that more than one Cr(V) species was generated from Cr(VI) soon after CCA treatment. The Cr(V) signal became strong within increased several hours followe...
K Yamamoto, J N R Ruddick
The quantitative determination of N-cyclohexyl-diazeniumdioxide (HDO) containing compounds in treated wood using TD-GC-MS
2001 - IRG/WP 01-20223
Last year we presented the paper (IRG/WP/00-20201) "Determination of N-cyclohexyl-diazeniumdioxide (HDO) containing compounds in treated wood using GC-MS". Based on the intensive discussion at the meeting, the first experiences made with the calibration of the system for this application will be reported. For the quantitative determination of N-cyclohexyl-diazeniumdioxide in treated wood, milled m...
P Jüngel, J Wittenzellner, E Melcher
EPA’s Current Views on Heavy-Duty Wood Preservative Regulation
2003 - IRG/WP 03-50206
This paper describes the current EPA system for regulating pesticides and wood preservatives. In particular it focuses on the voluntary phase-out of CCA for residential uses after December 30, 2003, which was agreed between the CCA manufacturers and EPA. Even though the EPA reached an agreement with industry to phase out CCA for residential uses, EPA is continuing the most rigorous risk assessmen...
F T Sanders
Decay evaluation of the effectiveness of a LOSP envelope treatment in eucalypt and meranti heartwoods for window joinery
1996 - IRG/WP 96-30099
The effectiveness and penetration in heartwood boards of an LOSP formulation containing TBTN was examined by determining decay resistance to the white-rot fungus Perenniporia tephropora. Boards, one metre long, of Eucalyptus regnans, Eucalyptus delegatensis, Eucalyptus obliqua and Eucalyptus sieberi were treated, along with boards of 'light' and 'dark' meranti. ...
L J Cookson, A Trajstman
Efficacy of waterborne copper naphthenate as preservative for northern hardwood species
1995 - IRG/WP 95-30091
Northern red oak (Quercus rubra) and red maple (Acer rubrum) cubes pressure treated with waterborne formulation of copper naphthenate were evaluated for resistance to attack by brown fungi Gloeophyllum trabeum (Pers. ex Fr.) Murr. (Madison 617 ATCC 11539) and Poria placenta (Fr.) Cooke (Madison 698, ATCC 11538), white rot fungi Trametes versicolor (L. ex Fr.) Pilat (R-105 from Jeff Morrell), Irpex...
D P Kamdem, R Fair, M H Freeman
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
Effect of species composition of preservative-treated Douglas fir plywood on its decay resistance
1978 - IRG/WP 2114
Plywood is now commonly used for constructional purposes in environmental situations where decay by wood-destroying fungi can be a considerable risk. However there seems to be a lack of understanding of the relative durability of plywood, both untreated and when treated with wood preservatives. Part of the reason for this situation has been the difficulty of carrying out laboratory decay tests on ...
R S Smith, P Balcaen
Fouling organisms as indicators of the environmental impact of marine preservative-treated wood
1995 - IRG/WP 95-50063
This study evaluates the use of fouling organisms (epibiota) to assess the environmental impact of preservative treated wood. This paper presents initial findings from treated panels exposed for 6 months at Sagres, Algarve, Portugal. Panels were treated with CCA, two copper-containing quaternary ammonium (ACQ) formulations and creosote, with nominal retentions from 10 to 40 kg/m³ (creosote 25 pcf...
R M Albuquerque, S M Cragg
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
The influence of staining fungi on the decay resistance of wood treated with alkylammonium compounds
1984 - IRG/WP 3308
Although found to be very effective in laboratory tests, alkylammonium compounds (AAC's) have failed to perform as well in field stake tests. Examination of leachability showed that this was not the cause. The present study investigated the possibility that staining fungi, (which have been observed to rapidly infect the field stakes), degrade the AAC wood preservative. Soil-blocks were tr...
J N R Ruddick
Accelerated weathering test for the evaluation of wood preservative efficacy
2003 - IRG/WP 03-20262
Wood samples treated with ammonium copper quat (ACQ-1900 and ACQ-2200), Chromated copper arsenate (CCA), Tanalith E 3491 and Wolmanit CX-8 have been studied in accelerated weathering experiments.
The weathering experiment was performed by cycles of 2 hours UV-light irradiation followed by water spray for 18 minutes. The changes on the surface of the weathered samples were characterized by FTIR Sp...
A Temiz, M Eikenes, Ü C Yildiz, F G Evans, B Jacobsen
Development of a mini-block test method for the rapid evaluation of preservative performance against Basidiomycte fungi
1991 - IRG/WP 2379
Screening procedures for new biocides used as wood preservatives can be a time consuming process using conventional Basidiomycete assay procedures. This is due mainly to the long exposure periods required to achieve adequate levels of decay (weight loss) in the test blocks. A number of alternative methods have been developed but most utilise artificial substrates such as filter paper or agar in wh...
J Brown, S Caswell, G R Williams
Recovery of copper, chromium, and arsenic compounds from the waste preservative-treated wood
1991 - IRG/WP 3651
In Japan, about 40 percents of waste wood is incinerated and the residue is dumped into the landfill site. The waste preservative-treated wood, which is mixed in nontreated wood, is incinerated in the same way, too. However, it will cause the serious problems that the gases contained with high concentration arsenic compounds are discharged from the smokestacks of the incineration facilities and th...
A Honda, Y Kanjo, A Kimoto, K Koshii, S Kashiwazaki