Your search resulted in 1106 documents. Displaying 25 entries per page.
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
Effect of compression wood on leaching of chromium, copper, and arsenic from CCA-C treated red pine (Pinus resinosa Ait.)
2000 - IRG/WP 00-30232
In this study, the effect of compression wood formation on the release rate of chromium, copper, and arsenic elements from red pine (Pinus resinosa Ait) was investigated. Wood blocks from red pine containing compression and normal wood portions were treated with a 1.0% CCA-C solution and were then allowed to fix at 23 ± ??2°C (74 ± 4°F) for 0, 6, 24, 48, 96, 192, and 336 hours. After each fixa...
S N Kartal, S T Lebow
International standards - can we make them simple? Stage 2: Reflection arising from the discussion at IRG 27
1996 - IRG/WP 96-20103
For the purpose of the ISO FAST TRACK project on preventive wood protection and durability, one shall refer to the 3 following stages:
Hazards: (for wood in service), a review of biological agencies defining the scope;
Exposure: a review of local, geographical parameters influencing the virulence of biological agencies towards wood in service (i.e climate indexes);
Risks: as a combination of ha...
G Ozanne
A diffusion and reaction model for the leaching of Cr-VI from unfixed CCA-treated wood
2001 - IRG/WP 01-50169
A physical model applicable to the leaching of any substance undergoing a first-order fixation reaction with wood is presented. Using this model and a laboratory leaching experiment with small wood samples immersed in water, the radial and tangential diffusion coefficients and the reaction rate constants of Cr-VI in unfixed CCA-treated red pine (Pinus resinosa Ait.) are measured. Reaction rate con...
L Waldron, P A Cooper
Proceedings from the wood preservation symposium "The Challenge - Safety and Environment" 19-20 February 1990, Cannes, France
1990 - IRG/WP 3600
Contains the List of Participants and the following 29 Documents (IRG/WP/3562-3590):
Canadian code of good practices - Recommendations for design and operation of wood preservation facilities. (IRG/WP/3582)
Current models used by the European health authorities to evaluate the vililization of active ingredients from treated wood used inside dwellings. (IRG/WP/3565)
Creosote and cancer. (IRG/WP/...
Anonymous
Chemical Analysis of Southern Pine Pole Stubs Thirteen Months Following Treatment with Three Methylisothiocyanate Based Commercial Fumigants
2002 - IRG/WP 02-30294
Agricultural fumigants have been commercially used in the United States for over 20 years to control internal decay in utility poles and other wooden structures. Of the four fumigants which are currently used in the remedial treatment of utility poles, three are based on methylisothiocyanate (MITC) as being the principal fungitoxic component. Two of these MITC based fumigants, liquid metham sodi...
R J Ziobro, T C Anderson, D J Herdman, J Guzzetta, T Pope
Assessment of the effects of rentex remedial treatment on some wood pole inhabitant micro-organisms
1994 - IRG/WP 94-30053
The effects of a remedial ground-line treatment using Rentex, a stabilised paste containing a mixture of fluoride and dichromate salts, on the micro-organisms inhabiting a sample of some 160 creosoted, on-line, electricity distribution poles, have been investigated as part of an appraisal of the efficacy of this remedial treatment. Half of the poles were treated and the other half used as controls...
D C R Sinclair, G M Smith, A Bruce, H J Staines
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
Experiences with supervision schemes for treated timber in Denmark
1984 - IRG/WP 3315
Since 1967 a voluntary supervision scheme for vacuum-pressure treatment was established in Denmark. In 1976 the Nordic Wood Preservation Council - NWPC - established a scheme based on wood preservation classes for treated timber as a joint technical standard valid in Denmark, Finland, Norway and Sweden. This paper deals with inspection results over 17 years for CCA treatment within our organizatio...
J Sabroe
Biological and physical properties of phenolic-resin treated wood before and after natural weathering
1999 - IRG/WP 99-40132
Biological and physical properties of phenolic resin-treated particleboards, which were made from fast growing tress and agrowaste as raw materials, were evaluated before and after natural weathering in tropical climate. The particles were sprayed with a mixture of a low molecular weight phenol-formaldehyde resin (5.0, 7.5 and 10% loading) and the adhesive phenol resin (8% loading). Results with l...
S Yusuf, Y Sudiyani, H Kajita, Y Imamura, M Takahashi
Kerfing and center-boring reduce checking in CCA-treated slash pine posts
1997 - IRG/WP 97-40082
Single and double kerfing, center-boring and incising were applied to green, peeled, slash pine posts. Posts were air dried for ten weeks and assessed for the number of surface drying checks greater than 1.0 mm in width. Posts were then pressure treated with a chromated-copper-arsenate (CCA-C) preservative and exposed outdoors in a horizontal position. The number of surface weathering checks in th...
P D Evans, R Wingate-Hill, R B Cunningham
Migration of chlorothalonil and carbendazim in fruits stored in wood treated with the anti-sapstain formulation Tuff Brite C
1997 - IRG/WP 97-50097
Fruits and vegetables stored in treated wood boxes are in contact with the products used for the treatment. In order to obtain regulatory approval for incidental food contact it is necessary to determine the quantity of residues on these fruits or vegetables. When the active materials are used in agriculture it is required that residues found are below to the MRL fixed for these substances. In the...
J F Cooper, D Riboul, M De Vleeschauwer, T L Woods
The influence of drilling patterns on the distribution of toxicants from Polesaver Rods in hardwood poles
1994 - IRG/WP 94-30051
Polesaver Rods are solid rods of wood preservative that are used as a groundline maintenance treatment to control biodeterioration in hardwood transmission poles in Australia. The rods are inserted in holes that are drilled in a prescribed manner to distribute the toxicants into the critical groundline region of the poles. To determine the influence of drilling patterns on the distribution of toxi...
W D Gardner, C N McEvoy
Development of software to automate the quantification of checking occurring in preservative treated wood exposed to weathering
2001 - IRG/WP 01-20228
Surface checking often disfigures the appearance of wood treated with water-borne preservatives and treatments designed to reduce such checking have been receiving increasing attention. Progress in this area has however been slowed by the lack of a method of rapidly and accurately quantifying checking at treated wood surfaces. A software package has therefore been developed which identifies, measu...
A G Christy, P D Evans
Microdistribution of Copper in Copper-Ethanolamine (Cu-EA) Treated Southern Yellow Pine (Pinus spp.) related to density distribution
2004 - IRG/WP 04-40270
The relationship between copper absorption and density distribution in wood cell walls was investigated in this study. The density distribution on layer level was obtained from two approaches: (1) calculation by using data obtained from literature; (2) microdistribution of carbon and oxygen atoms in the wood cell. The microdistribution of carbon and oxygen in untreated southern yellow pine (Pinus ...
Jinzhen Cao, D P Kamdem, E Pasek
Mechanical properties of CCA-treated southern pine after post-treatment kiln drying
1989 - IRG/WP 3543
This report reviews current research dealing with the effects of waterborne preservative treatment and redrying on the mechanical properties of wood. In general, waterborne preservative treatments reduce average mechanical properties. This effect is exaggerated when treated wood is kiln-dried after treatment, especially at elevated temperatures. For lumber, recently completed research at the Missi...
H M Barnes, J E Winandy
Study of modulus of rupture, circumference taper, sapwood thickness and CCA treatment of Norwegian origin Pinus sylvestris poles
1994 - IRG/WP 94-20054
Nondestructive strength testing with Pilodyn (6J) of Norwegian Pinus sylvestris poles revealed effective modulus of rupture (MOR) of 54.39 N/mm² at wet conditions after CCA-C treatment and circumference measurement revealed circumference taper of 0.021 m/n. Sapwood thickness or penetration of CCA-C study revealed that 77% poles were with sapwood thickness equivalent to 39.6% of radius of poles an...
A K Lahiry, S Begum, G N M Ilias, M A B Fakir, R U Hafiz
Environmental aspects of wood preservation
1987 - IRG/WP 3406
The preservation industry employs a wide range of chemicals and processes to provide timber commodities capable of resisting biodeterioration and degradation. The public often perceives the chemicals as health hazards and treatment plants as potential threats to the environment. This paper attempts to place in proper perspective the value of wood preservation. It discusses aspects of health and sa...
H Greaves
Field study: Wood degradation pattern in buildings and utility poles in tropical climates of Nigeria
1992 - IRG/WP 92-1521
The paper is the result of five years field study of wood degradation patterns in three ecological forest zones (Guinea Savannah, Tropical rain forest and mangrove forest zones, respectively). It involved 800 residential buildings and 700 electric overhead transmission poles. The methodology used was a modified Eslyn (6) test. A high rate of Ascomycetes and Basidiomycetes attack especially on the ...
E O Onuorah
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
Evaluation of impact of CCA-treated wood on the marine environment
1995 - IRG/WP 95-50040-15
This paper reviews the literature relating to the potential of CCA-treated wood to affect the marine environment and outlines the compounds required for a model which could be used to predict the environemental impact of maritime construction using such timber. Marine pilings require high loadings of CCA to provide protection from marine borers. Though loadings of 32-48 kg/m³ provide long-term pr...
R M Albuquerque, S M Cragg
Evaluation of fluid distribution in pressure treated wood in different flow directions
2004 - IRG/WP 04-40281
Among different methods, polymerization technique was chosen to study distribution of fluid through cell types in treated wood. Red maple wood specimens with the size of 2 by 2 by 4 cm (radial, tangential and longitudinal, respectively) were prepared. Styrene monomer was used as the fluid for impregnation; because its physical properties such as surface tension, specific gravity and viscosity fall...
A Omidvar, M H Schneider
The Disposal of CCA-Treated Wood in Simulated Landfills: Potential Impacts
2003 - IRG/WP 03-50198
Landfills are typically where CCA-treated wood is currently disposed, and will likely continue to be the primary form of management in the future. It has been shown that arsenic, copper and chromium leach from CCA-treated wood in certain situations; however, the impact of the disposal of CCA-treated wood on landfill leachate is currently unknown. The objective of this research is to examine the po...
J Jambeck, T G Townsend, H M Solo-Gabriele
Management strategies for the disposal of CCA-treated wood
2000 - IRG/WP 00-50155
A two-fold management strategy is presented for the disposal of wood treated with chromated copper arsenate (CCA). The first part focuses on the use of alternative wood treatment preservatives. The second part of the management strategy addresses short-term disposal issues (less than 25 years) by developing new methods to handle the waste. A set of seven alternative wood preservatives were evaluat...
H M Solo-Gabriele, T G Townsend
Effects of chemicals used for ground-line protection of hardwood poles on termite attack
1988 - IRG/WP 1356
The majority of chemicals formulatet to protect the groundline of hardwood poles in Australia have been fungicides. Nine products were tested against Coptotermes lacteus attack to determine their value in preventing attack by subterranean termites. Results indicated that Busan, high temperature creosote, pigment emulsified creosote, copper naphthenate gel and "Blue 7" had a repellent effect on Cop...
R S Johnstone, R H Eldridge