Your search resulted in 722 documents. Displaying 25 entries per page.
Laboratory termite testing of copper boron tebuconazole
2000 - IRG/WP 00-20192
The American Wood Preservers' Association laboratory choice and no choice termite test (AWPA E1-97) was performed on a formulation of copper azole, which is comprised of copper, boric acid, and tebuconazole. The formulation tested has a ratio of copper:boric acid:tebuconazole of 25:25:1. So as to examine the impact of leaching, the southern yellow pine wafers were treated with and without...
R F Fox, E A Pasek, J Patel
Removal of copper, chromium and arsenic from CCA treated wood using boron compounds
2005 - IRG/WP 05-50230
This study evaluates the copper (Cu), chromium (Cr) and arsenic (As) removal from CCA treated wood using boron compounds such as boric acid, borax (sodium tetraborate), and Timbor (DOT, disodium octaborate tetrahydrate) at varying (3 and 5%) concentrations. Remediation processes were taken at 1, 5 and 10 day intervals. Metals in remediated chips or sawdust were then analyzed using ICP and XRF. Res...
B Tarakanadha, T Hata, S N Kartal, W J Hwang, Y Imamura
Performance of preservative-treated wood not in ground contact
1975 - IRG/WP 254
Experimental sash units of Pinus strobus L. and Pinus resinosa Ait. wood were removed from a test fence at Ottawa, Canada after outdoor exposure of over 20 years. The units were superficially treated, prior to painting, with preservatives containing either copper naphthenate, pentachlorophenol or a combination of zinc naphthenate and pentachlorophenol. Results indicated that all treatments were ef...
J K Shields, J Krzyzewski
Performance of copper naphthenate-treated hardwoods
2001 - IRG/WP 01-30269
Copper naphthenate (CuNap) is a historically proven, commercially produced and industry utilized preservative for many wooden commodities including poles, fence posts, lumber, timber and wood shakes/shingles. Historically, most wood preservatives are tested using the sapwood of softwood species like pine (Pinus spp.) and or Douglas-fir (Pseudosuga menziesii) and even though the railroads of the wo...
H M Barnes, T L Amburgey, H M Freeman, J A Brient
Timber preservatives and corrosion
1983 - IRG/WP 3228
A survey of preservative treated timber commodities has illustrated problems that may be caused by corrosion. After treatment, timber should be compatible with commonly used fasteners. Whilst many corrosion methods have been used in the past, no standardized method is used by workers in timber preservation. The Queensland Department of Forestry is developing laboratory test methods for assessing c...
R I Davis
Microwave digestion of preserved wood for the determination of Cu, Cr, As, B and P in quality control
1991 - IRG/WP 2364
A microwave digestion method for the determination of copper, chromium, arsenic, boron and phosphorus in preserved woods is described. Samples were digested with nitric acid in pressure-relief type teflon PFA vessels by microwave heating in a commercial laboratory microwave oven. Fast, efficient and complete digestion was achieved within 29 min for 12 samples. The digestion time compared favourabl...
N Bernth, L B Sheard
International collaborative laboratory comparison of two wood preservatives against subterranean termites: Second update
1995 - IRG/WP 95-10117
As was agreed by members at the termite workshop at the 24th annual meeting of IRG in Orlando, USA, in May 1993 to initiate an international subterranean termite laboratory bioassay to compare the various preferred termite protocols used by IRG termitologists was initiated. The author was nominated to co-ordinate this comparative laboratory evaluation of two wood preservatives (CCA and Cu-naphthen...
J R J French
Accelerated termicidal performance data for new water-based copper linoleate formulations
1996 - IRG/WP 96-30104
An organic solvent based copper linoleate (Culin) has proved itself as an effective wood preservative in long term field trials in South Africa over a period of 30 years. Whilst the organic solvent based product offers good wood preservative performance, primary industrial interest has been in an emulsified version of the product. The objective of this study was to evaluate the influence of two di...
D Conradie, P Turner
Preservative treatment of rubber wood (Hevea brasiliensis) to increase its service life
2005 - IRG/WP 05-40320
Rubber wood (Hevea brasiliensis) possess excellent properties for interior designing, wood working and furniture making. But it is very much susceptible to sap stain and mould fungi which decreases the service life. For profitable uses , it is necessary to increase the service life of rubber wood. To protect the rubber wood from wood degrading agents, the sawn timber were treated with Borax – b...
K Akhter
BG- an easiest preservative paste and its effective diffusibility in timbers for indoors and outdoors uses
2001 - IRG/WP 01-30253
After application of a newly formulated paste "BG-1" on all surfaces of air-dried lumbers, the boron have been found diffused completely in permeable and impermeable hardwoods at the rate of 12 mm radial thickness per week. The new paste may be a solution to protect lumbers being used or to be used under cover where timber is susceptible to termite and borer attack. The new cost effective paste wa...
A K Lahiry
Remedial ground-line treatment of CCA poles in service. A progress report after 28 months' testing
1988 - IRG/WP 3481
Remedial treatments of CCA-treated poles in service with incipient soft rot were carried out with boron rods, boron/glycol solution, boric acid paste, copper/creosote paste and a commercial product (DFCK paste) respectively. The micro-flora before remedial treatment and 6 months after as well as the spread of chemicals in the poles were reported in Document No: IRG/WP/3388. In this progress report...
B Henningsson, H Friis-Hansen, A Käärik, M-L Edlund
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
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
Reappraisal of some fungicides by the amended JWPA method
1992 - IRG/WP 92-3689
Organoiodine compounds which have been commercialized these years in Japan poorly performed as fungicides in the amended JWPA decay test (Standard 1, 1989) when applied to superficial treatment of timber. Because some parts of active ingredients seemed to disappear from the treated timber surface mainly due to the severe leaching cycles. This was prominently true for beech (Fagus crenata Blume) sa...
K Tsunoda
Working plan: Second international collaborative field trial
1995 - IRG/WP 95-20056
This paper describes the scope, objectives, and approaches to be used in the second international collaborative field trial approved by the Scientific Programme Committee for partial funding in 1994. The trial is designed to develop a broad data base on causal mechanisms, interactions, and factor affecting the performance of treated wood in ground contact. The trial encompasses 12 different field ...
H M Barnes, T L Amburgey
On the use of probit analysis for assessing the toxicity of wood preservatives
1974 - IRG/WP 244
To elucidate the general character of the action of the toxic material on the fungus, it is sufficient to carry out preservative tests using the previously described procedure, but in doing so, it is necessary somewhat to change the number of specimens and their arrangement in jars. Five concentrations of toxic material are tested simultaneously. For the testing of one preservative ten jars should...
D A Belenkov
Evaluation of the protective means of some wood preservatives by means of accelerated tests
1973 - IRG/WP 232
In site conditions of the eastern site in the forest-steppe part of the Krasnovarsk region, the relative effectiveness of a series of wood preservatives was obtained by means of field tests. To obtain a more accurate evaluation of the protective qualities of these accelerated tests were carried out in laboratory conditions. In 9 boxes filled with non-sterile soil taken from the site, 72 samples of...
I A Petrenko
Investigation of copper fixation in timber by sodium nitrit
1992 - IRG/WP 92-3707
Solutions containing mixtures of water soluble copper salts and sodium nitrite have been shown to be capable of producing leach resistant copper treatments when impregnated into timber. A rapid leaching trial showed that copper fixation levels of 85-90% were possible which compared well with the fixation level obtained with conventional hexavelant chromium containing systems in the same test regim...
C Waldie, J A Cornfield
Protection of cellulose string with biocide/water repellent mixtures
1997 - IRG/WP 97-30148
Protecting cellulosic materials in soil contact poses a formidable challenge. Many soil inhabiting bacteria and fungi that cannot degrade wood can nevertheless rapidly depolymerize cellulose once its protective lignin matrix is removed. As a result, cellulose based materials are rarely used in direct contact with soil. One exception, however, is the use of cellulose string to support climbing vine...
A B Chang, J J Morrell
A bioassay of remedially treated pole material
1987 - IRG/WP 3453
Stubs prepared from treated and untreated utility poles were installed in a test plot and pressure spade treated at the groundline with one of four preservative greases. At one and three year intervals, core samples were removed from the stubs and the improvement in the preservative efficacy due to the greases was assessed. The bioassay investigation showed that only bis(tributyltin) oxide (TBTO) ...
J N R Ruddick, L Parker
Bioefficacy of Cunapsol® treated western cedar and southern yellow pine
1996 - IRG/WP 96-30120
Western red cedar and southern yellow pine sapwood were dip treated with a new formulation of waterborne copper naphthenate (Cunapsol®) which complies with VOC regulations. Cunapsol dip treated samples were oven dried at 50°C for 48 hours and then water leached for two weeks. Decay resistance and leachability of preservatives from dip treated specimens were evaluated according to AWPA (American ...
D P Kamdem, M H Freeman, T L Woods
Fungal degradation of wood treated with metal-based preservatives. Part 1: Fungal tolerance
1996 - IRG/WP 96-10163
In recent years, concerns have arisen about the leaching of heavy metals from wood treated with chromated copper arsenate (CCA), particularly because of the large amount of CCA treated wood that will be discarded in the coming years. The long term objectives of this work are to determine the fate of copper, chromium and arsenic with the aging and potential decay of CCA-treated wood, and to develop...
B Illman, T L Highley
Addition of boron compounds and octanoic acid for improvement of biocidal properties and copper fixation at copper-ethanolamine based wood preservatives
2006 - IRG/WP 06-30408
Copper-ethanolamine based wood preservatives became important active substance (formulation) for wood protection, novelty. As copper itself can not ensure sufficient protection against wood destroying organisms and fixation in wood we combine it with other biocides like ethanolamine, boron and octanoic acid. This investigates were performance on spruce wood impregnated with different combination o...
F Pohleven, M Humar
CCB Preservative treatment of split muli (Melocanna baccifera ) bamboo by soaking process
2006 - IRG/WP 06-40336
This study was carried out in order to investigate the retention of chemicals inside the split muli ( Melocanna baccifera ) bamboo after preservative treatment by soaking process. Treatment with 10% aqueous solution of CCB (copper-chrome-boron) was applied in split bamboo of two sizes (1/4 part and 1/8 part) at three different moisture contents and five time periods (24, 48, 72, 96, 120 hours). It...
K Akhter, M H Chowdhury
Non-pressure preservation technique of five less durable timber species – Kadam (Anthocephalus cadamba), Shimul (Bombax ceiba), Pithalu (Trewia nudiflora), Am (Mangifera indica) and Boroi (Ziziphus jujube) of Bangladesh
2006 - IRG/WP 06-40322
Wood is a versatile renewable resource, which has been extensively used as a reliable construction material as well in furniture ever since the beginning of civilization.
The Major disadvantage of wood is its susceptibility to biodeterioration by fungi, insects and bacteria. In tropical countries like Bangladesh, fungi is the most significant of these biodeterioration agents. Kadam (Anthocephalus...
G N M Ilias, A H Kabir, F Begum, M F Alam