Your search resulted in 993 documents. Displaying 25 entries per page.
Effect of damage to polyurea coatings on metal losses from ammoniacal copper zinc arsenate treated Douglas-fir pile sections
2019 - IRG/WP 19-40867
…environment. The greatest risk in this regard is copper because many organisms are highly sensitive to this metal. While post treatment practices can reduce migration risk, even these small amounts can be problematic in some applications. Coatings have long been used to prolong the useful life of various…
M J Konkler, J J Morrell
Ammoniacal Copper Zinc Arsenate Preservative Treated Wood Ties Their Performance in Testing and Track
2014 - IRG/WP 14-30636
While not a new preservative system, Ammoniacal Copper Zinc Arsenate (ACZA), had not previously been used to protect crossties. Its performance in treating difficult or refractory species of wood has been documented through its wide range of uses approved in AWPA. The establishment of…
T Carey
Metal Migration from Douglas-fir Poles Treated with Ammoniacal Copper Zinc Arsenate According to Best Management Practices
2010 - IRG/WP 10-50272
The potential for migration of metal components from ammoniacal copper zinc arsenate treated (ACZA) poles was examined using pole sections treated using Best Management Practices. Copper and zinc levels were highest in runoff collected following the first rainfall events, then declined. Copper and zinc levels…
J J Morrell, C S Love, C Freitag
The Effect of Heat on the Retention of Ammoniacal Copper Quat (ACQ-AB) onto Scots Pine (Pinus Sylvestris L.) Wood
2008 - IRG/WP 08-40390
…pine (Pinus sylvestris L.) were treated with ammonical copper quat type (ACQ-AB), which is one of the environmentally friendly wood preservatives, by using soaking method as a functions of various temperatures and time. The results indicated that the retention behaviour of ACQ onto the wood was considerably…
M Hakki Alma, A Mukremin Kara
Comparative performance of several ammoniacal copper preservative systems
1997 - IRG/WP 97-30151
The efficacy of several ammoniacal copper-based wood preservative systems was evaluated in this study. The selection of potential co-biocides was based on the results of an agar plate test. Following this, the most promising systems were evaluated in a standard field stake test.…
D D Nicholas, T Schultz
Stake test with ammoniacal copper in combination with different agents started in 1962
1997 - IRG/WP 97-30130
In 1962 a stake test was started with ammoniacal copper in combination with chromium, arsenic, pentachlorophenol, boron, salicylic acid, benzoic acid, sorbic acid, pyridine and tannin. Different concentrations of the copper component were used as well as the added agents. For each concentration…
B Häger, Ö Bergman
EPR investigations of interactions between ammoniacal Cu(II) octanoate and wood
1996 - IRG/WP 96-30110
Ammoniacal solutions of copper(II) octanoate [ C u . h l f . 2 . r h l f.(O2CC7H15)4], interactions of these solutions with wood and wood components, and leaching of copper(II) octanoate from impregnated wood samples, have been studied by electron…
F Dagarin, M Petric, F Pohleven, M Sentjurc
Ammoniacal zinc borate as solid wood preservative
2014 - IRG/WP 14-30659
Zinc borate, well-known for its fungicidal, insecticidal and flame resistant properties, is widely used in manufacture of lignocellulose particle board. This form of borate is the least water soluble form available providing advantages as well as disadvantages…
C Ibáñez, C Mantero, A Ibarra, M Rabinovich
Ammoniacal wood preservative for use in non-pressure treatment of spruce and aspen poplar. Part 1
1984 - IRG/WP 3273
…diffusion process in open tank treating vessels using an ammoniacal copper-arsenate wood preservative. The process proved technically feasible with respect to controlling the vapourization of ammonia from open tanks during treatment at high temperatures. Treatments of 48 hours or more on unseasoned and partially…
C D Ralph, J K Shields
Marine trials with ammoniacal wood preservatives
1980 - IRG/WP 423
Ammoniacal wood preservatives have been known for many years and are considered among the best water-borne systems for protecting wood in ground contact. In recent years attention has been increasingly focussed on these preservatives because of their ability…
M A Hulme, D P Ostaff
Tests with ammoniacal copper and alkyl ammonium compounds as wood preservatives
1984 - IRG/WP 3299
Formulations based on copper and alkyl ammonium compounds in ammonia solution have been tested in a fungus cellar on Pinus radiata and Fagus sylvatica. This type of products gives promising results as wood preservatives, especially on hardwood and are safe to destroy by e.g.…
C-E Sundman
Ammoniacal wood preservatives for use in non-pressure treatment of spruce and aspen poplar. Part 2
1984 - IRG/WP 3274
…aspen poplar (Populus tremuloides Michx.) timbers using an ammoniacal copper arsenate wood preservative. Under the specific conditions described, certain charges of lumber met the present Canadian Standards Association Wood Preservation Committee's requirements for wood in ground contact, having 10 mm…
C D Ralph, J K Shields
Preservative treatment of green timber by soaking in ammoniacal copper borate
1984 - IRG/WP 3292
…pine sapwood were preservative treated by soaking in ammoniacal copper borate. Optimum schedules were obtained by partially seasoning the boards for one week prior to treatment. This aided the absorption of preservative and reduced the required soaking time to approximately 2 hours. Complete boron penetration…
P Vinden, A J McQuire
Spruce lumber treatments with ammoniacal solutions of inorganic preservatives
1977 - IRG/WP 391
As a part of our work in the Wood Preservation group at the Eastern Forest Products Laboratory in Ottawa to facilitate exploitation of spruce, which is a large timber resource in Canada, we have been studying the treatability of spruce roundwood. A report on t…
R Rak
Some factors affecting the treatability of spruce roundwood with ammoniacal preservative solutions
1976 - IRG/WP 371
Permeable wood species for use in preservative-treated commodities are becoming depleted in Canada. Spruce can be a convenient replacement for them from local resources provided it can be treated to levels adequate for protection of commodities in ground conta…
J Rak
Copper migration from preservative-treated Douglas-fir decking: models vs laboratory leaching data
2024 - IRG/WP 24-50390
The ability of a model to predict copper migration from Douglas-fir treated with organic metallic substances into a freshwater slough was evaluated against data generated through simulated overhead leaching. The model predicted very high loadings of ammoniacal copper zinc arsenate, alkaline…
M J Konkler, G Presley, J J Morrell, T Singh
Boron dual-treatments for Douglas-fir utility poles: Tracking boron migration over time
2019 - IRG/WP 19-30739
…and then over-treated with either pentachlorophenol or copper naphthenate in oil. Alternatively, poles were treated with a mixture of DOT and ammoniacal copper zinc arsenate in a single treatment. The pole sections were installed in the field and monitored for changes in boron content over time. Boron levels…
J Cappellazzi, M J Konkler, J J Morrell
Untreated and copper-treated wood soaked in sodium oxalate: Effects of decay by copper-tolerant and copper-sensitive fungi
2017 - IRG/WP 17-10888
Copper is widely used as the primary component in wood protectants because it demonstrates a broad range of biocidal properties. However, a key concern with using copper in wood preservative formulations is the possibility for brown-rot basidiomycetes to…
K M Ohno, G T Kirker, A B Bishell, C A Clausen
The copper-transporting ATPase pump and its potential role in copper-tolerance
2016 - IRG/WP 16-10859
Copper-tolerant brown-rot decay fungi exploit intricate mechanisms to neutralize the efficacy of copper-containing preservative formulations. The production and accumulation of oxalate is the most widely recognized theory regarding the mechanism of…
K M Ohno, C A Clausen, F Green III, G Stanosz
Incidence of soft rot attack on preservative treated Douglas-fir poles: a preliminary survey
2014 - IRG/WP 14-10818
…of soft rot decay in Douglas-fir poles treated with ammoniacal copper zinc arsenate (ACZA) or pentachlorophenol in oil was studied. Soft rot was less prevalent in poles treated with penta, but some soft rot was found in approximately 20 % of poles examined. Soft rot was more common in poles treated with ACZA,…
P Torres Andrade, J J Morrell
A marine borer test with water-borne preservatives
1980 - IRG/WP 452
The use of preservative treated timber in sea-water where marine borers are active is of great economic importance, since untreated wood immediately will be damaged. Vacuum/pressure treated timber has been tested in several marine exposure trials on the Swedis…
B Henningsson, E Norman
Ten Year Field Tests of Borate-Treated Wood Against Subterranean Termites
2011 - IRG/WP 11-30557
…with disodium octaborate tetrahydrate and chromated copper arsenate (CCA) and local reference materials. In Canada all of the treated material was found to be performing equally well after ten years, with some pieces showing residual signs of early superficial nibbling or cosmetic damage. Attack was moderate…
P I Morris, J K Grace, K Tsunoda
Tensile stress relaxation of wood impregnated in different ACQ formulations at various temperatures
2009 - IRG/WP 09-40456
The reactions between ammoniacal copper quat (ACQ) constituents and wood components were investigated by tensile stress relaxation approach. Small wood samples were stressed and impregnated in ACQ solutions with different formulation including the ethanolamine (MEA) to copper…
Lili Yu, Jinzhen Cao
Physical and Mechanical Properties of Bamboo Oriented Strand Board Treated with Copper-based Preservatives
2009 - IRG/WP 09-40482
…of BOSB experimental panels treated with 3 different copper-based preservatives. Strands were prepared from the culms of Moso bamboo (Phyllostachys pubescens) with age of 4-5 years, and phenol formaldehyde (PF) resin was used as the binder. Ammoniacal Copper Quat (ACQ), Copper Azole (CuAz) and Copper…
Juwan Jin, Daochun Qin
Microbial Community Analysis Using Terminal Restriction Fragment Length Polymorphism (T-RFLP) Analysis: Field Study Results
2008 - IRG/WP 08-20377
…analysis. Field stakes treated with 0.25% and 0.37% ammoniacal copper quat (ACQ-C), 0.1 and 0.25% CTN, and 0.1 and 0.25% CTN combined with 2% BHT were installed with untreated controls in field sites in Mississippi. Stakes were sampled at 90 days intervals and rated for decay damage. Microbial DNA was…
G T Kirker, S V Diehl, M L Prewitt, W J Diehl