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91 records – page 1 of 10.

Application of biotechnology to wood protection

https://library.fpinnovations.ca/en/permalink/fpipub5090
Author
Yang, D.-Q.
Date
March 2000
Edition
41940
Material Type
Research report
Field
Sustainable Construction
Author
Yang, D.-Q.
Date
March 2000
Edition
41940
Material Type
Research report
Physical Description
3 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood
Series Number
General Revenue Progress Report
E-3408
Location
Sainte-Foy, Québec
Language
English
Abstract
Biological Control
Wood protection - Biotechnology
Bioprotectants
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Assessment of fire hazards in a wood-products manufacturing plant

https://library.fpinnovations.ca/en/permalink/fpipub5952
Author
Richardson, L.R.
Mehaffey, J.R. (Jim)
Aston, R.
Tardif, Y.G.
Batista, M.
Date
July 2000
Edition
41938
Material Type
Research report
Field
Sustainable Construction
Author
Richardson, L.R.
Mehaffey, J.R. (Jim)
Aston, R.
Tardif, Y.G.
Batista, M.
Date
July 2000
Edition
41938
Material Type
Research report
Physical Description
19 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Wood
Research
Series Number
Canadian Forest Service No. 6
E-3404
Location
Sainte-Foy, Québec
Language
English
Abstract
Fire Research
Fire hazards
Wood Products
Manufacturing plant
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Assessment of two green gluing processes for finger jointing

https://library.fpinnovations.ca/en/permalink/fpipub5074
Author
Verreault, C.
Date
April 2000
Edition
41921
Material Type
Research report
Field
Sustainable Construction
Author
Verreault, C.
Date
April 2000
Edition
41921
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Transfer
Pinus
Spruce
Joints
Gluing
Canada
Black spruce
Balsam
Series Number
Canadian Forest Service No. 2407
E-3386
Location
Sainte-Foy, Québec
Language
English
Abstract
Green finger jointing is increasingly becoming a proven possibity with three main technological processes, the New Zealand Greenweld process, the US soybean-based adhesive process and the US soybean-based adhesive process by assessing drying degrade and mechanical performance of green-glued finger-jointed material after drying. The urethane-based adhesive process was studied in a previous project. Overall, we did not observe performance differences between the Greenweld and the soybean-based adhesive processes. This was to be expected since they are both phenol resorcinol formaldehyde types of adhesives. Thus, the process choice should be made based on other considerations than mechanical performance, such as economical or procedure preferences. In comparison with the polyurethane adhesive studied before, it appears obvious that more stress concentration is present at the joint after drying because of the failure modes observed. However, with long term use, this product (the urethane-based adhesive) still needs to be studied because it is less known than the two other phenol-resorcinol-formaldehyde based processes. The results also demonstrate that green finger-jointing material, such as black spruce and balsam fir, could at least be used to produce stud grade lumber.
Forintek Canada Corp. - Report
Finger Joints
Green gluing
Black spruce
Balsam fire
Technology transfer
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Behaviour and reliability of wood-frame systems under axial loads exposed to fire

https://library.fpinnovations.ca/en/permalink/fpipub5084
Author
Van Zeeland, I.
Date
March 2000
Edition
41933
Material Type
Research report
Field
Sustainable Construction
Author
Van Zeeland, I.
Contributor
Canada. Canadian Forest Service
Date
March 2000
Edition
41933
Material Type
Research report
Physical Description
16 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Wood frame
Wood
Timber
Systems
Resistance
Research
Building construction
Series Number
Canadian Forest Service No. 09
E-3399
Location
Sainte-Foy, Québec
Language
English
Abstract
Building construction - Fire research
Structural Timber - Fire Resistance
Wood-frame systems - Fire resistance
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Biological protection of sawlogs against bluestain : CFS value added research program progress report to March 31, 2000

https://library.fpinnovations.ca/en/permalink/fpipub4441
Author
Uzunovic, Adnan
Date
April 2000
Edition
41224
Material Type
Research report
Field
Sustainable Construction
Author
Uzunovic, Adnan
Contributor
Canada. Canadian Forest Service.
Date
April 2000
Edition
41224
Material Type
Research report
Physical Description
3 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Stain fungal
Stain
Pinus contorta
Pinus
Series Number
W-1689
Location
Vancouver, British Columbia
Language
English
Abstract
The objective of this project is to determine the technical and economic feasibility of using C97 (Cartapip 97), or an equivalent albino fungi, to control sapstain in lodgepole pine logs.
Stains - Fungal - Control
Pinus contorta Dougl. var latifolia - Stains - Fungal
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Bois résineux à valeur ajoutée : perspectives de marché des portes et fenêtres

https://library.fpinnovations.ca/en/permalink/fpipub5282
Author
Laué Guay Inc.
Date
May 2000
Edition
42152
Material Type
Research report
Field
Sustainable Construction
Author
Laué Guay Inc.
Date
May 2000
Edition
42152
Material Type
Research report
Physical Description
43 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Windows
Softwoods
Markets
Location
Sainte-Foy, Québec
Language
French
Abstract
Softwoods - Markets - North America
Doors
Windows
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Borate loss due to condensation or flooding from borate-treated sill plates : final report

https://library.fpinnovations.ca/en/permalink/fpipub4428
Author
Minchin, D.
Byrne, Anthony (Tony)
Date
April 2000
Edition
41209
Material Type
Research report
Field
Sustainable Construction
Author
Minchin, D.
Byrne, Anthony (Tony)
Contributor
US Borax
Natural Resources Canada
Date
April 2000
Edition
41209
Material Type
Research report
Physical Description
16 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives penetration
Preservatives boron
Preservatives
Japan
Penetration
Series Number
W-1668
Location
Vancouver, British Columbia
Language
English
Abstract
Due to its leachability, Japanese authorities deem disodium octaborate tetrahydrate (DOT) unsuitable for use as a preservative treatment for sill plates. Although the sill plates are not in direct ground contact, and are usually protected from the elements by siding, some authorities suggest that the preservative will diffuse into the damp concrete sill, or that condensation or occasional flooding will compromise the treatment. Due to a lack of data on the extent of boron loss under these circumstances, a test was designed to investigate borate losses from DOT-treated sill plates. This project set up sill plates on wet sills under conditions of high humidity/light condensation, with and without a sill gasket, and with and without water spray (simulating extreme condensation) or occasional flooding. End-matched samples of DOT-treated 105mm squares were prepared and analyzed for the penetration and retention of preservative. Each sample was placed on a concrete sill contained in polyethylene containers and kept at high humidity (100% relative humidity) with light condensation occurring. A controlled water spray was applied to two sets of test samples. In another set the samples were individually flooded in a separate container for 24 hours once each month. Weighing the samples and analyzing the water for borate content enabled monitoring of moisture uptake and loss of borate over a six-month period. Following completion of the six-month test, the moisture content, preservative penetration, and preservative retention of the test samples were again determined. The test with high humidity and light condensation alone gave conditions which resulted in sill plates comparable to the wettest sill plates observed in Japanese houses. The data showed that negligible borate leaching occurred from DOT-treated sill plates stored under these conditions. The effect of placing a gasket between the sill plate and the sill could therefore not be determined because of the negligible loss. This work confirmed that significant borate loss only occurred when DOT treated sill plates were washed with large quantities of liquid water, either by spraying or flooding. Spraying resulted in sill plate moisture contents which were double those found in service in older houses in Japan. Modern house construction has dramatically reduced crawlspace moisture contents. Consequently, wetting to this extent would not occur during normal modern house construction and service. The presence of a sill gasket did not stop loss of borate following spraying indicating that the water was dripping off and not passing into the concrete. 2000-2615
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Case study : CCA treated posts after 4.5 years service

https://library.fpinnovations.ca/en/permalink/fpipub4484
Author
McFarling, S.M.
Morris, Paul I.
Date
March 2000
Edition
41269
Material Type
Research report
Field
Sustainable Construction
Author
McFarling, S.M.
Morris, Paul I.
Date
March 2000
Edition
41269
Material Type
Research report
Physical Description
7 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives chromated copper arsenate CCA
Preservatives
Preservation
Posts
Posts preservation
Series Number
W-1888
Location
Vancouver, British Columbia
Language
English
Abstract
In southwestern B.C., CCA-treated wood is being increasingly used for balcony support posts. However, these are not required to meet CSA standards. After only 4.5 years in service there were signs of decay in 105 mm square CCA-treated posts removed from one Vancouver condominium complex. Three of these posts with particularly low preservative retention and penetration were severely decayed. Four more were slightly damaged by decay. Overall, the posts would not have met the penetration and retention requirements in CSA standards and were put into a critical application in a high hazard environment in contact with untreated wood. The size and the preservative retention suggest that this was material treated for the Japanese market that failed to meet the penetration or grading requirements of the JAS standard and was therefore sold locally. There is a wealth of evidence to show that material meeting CSA standards can meet or exceed service life expectations. However, confidence in the performance of treated wood can easily be damaged by the poor performance of substandard material. Unfortunately, there is currently no requirement for treated wood used in buildings to have third-party assurance of standards conformance.
Preservatives - Chromated copper arsenate (CCA)
Posts - Preservation
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Critical times, moisture contents and temperatures for detectable strength loss in plywood and oriented strand board : pilot study|IN: Limiting conditions for decay : compilation of reports.

https://library.fpinnovations.ca/en/permalink/fpipub41215
Author
Clark, Jean E.
Morris, Paul I.
Lum, Conroy
Date
April 2000
Material Type
Research report
Field
Sustainable Construction
Author
Clark, Jean E.
Morris, Paul I.
Lum, Conroy
Contributor
Canada. Canadian Forest Service.
Date
April 2000
Material Type
Research report
Physical Description
11 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Mechanical properties
Strandboards
Physical properties
Plywood
Oriented strandboard
Orientation
Series Number
IN Canadian Forest Service No. 16;1963
W-1674
Location
Vancouver, British Columbia
Language
English
Abstract
The project objective is to identify the wood-rotting fungi causing decay in Canadian buildings, and to provide data for a numerical model which will provide an indication of the time required for initiation of strength loss in wood-based panels when exposed to a range of moisture contents and temperatures. The MEWS consortium led by the National Research Council's Institute for Research in Construction is developing a computer model to predict the moisture and temperature conditions within a construction assembly in service. By including a damage function calculation for the various building components, the model can predict the consequences of these conditions in terms of strength loss. Forintek's role is to develop an experimental protocol that will be universally acceptable in the field of wood science, and generate a data set from which one could derive a damage equation for wood decay as a function of time, temperature and moisture conditions. Discussions have established that strength loss in sheathing is the first priority. A series of proposed test methods were examined. In consultation with members of the consortium task force, a method was selected which was felt would provide suitable strength loss data within the constraints of the funding available. Sheathing samples will be subjected to various combinations of temperature and humidity and repeatedly inoculating with a wood-rotting fungus to represent natural infection. The samples will be monitored using non-destructive testing and then destructively tested when the first test suggests a strength change. The result is a two-stage test at a range of temperatures and humidity levels, giving a measurement of time to strength loss. An initial pilot study is concerned with development, refining and verification of the method. "Method B" of ASTM 3043 is being evaluated to determine if it will be appropriate. The test is monitoring the bending stiffness and strength of oriented strand board samples, using a 2-point flexure test. The pilot study is underway, with samples exposed to 20°C and a relative humidity of approximately 96%. Problems involving moisture control in the environmental chambers have been resolved, as have questions around the sample size, the number of test specimens required in the pilot study, the time required for conditioning prior to inoculation and the actual bending and strength test procedures. The inoculation protocol is being evaluated. At this time none of the test pieces have shown significant losses in bending stiffness. A number of test conditions remain to be defined, however, and these will be established at the conclusion of the pilot study.
Plywood - Strength
Oriented strandboard - Strength
Strength - Influence of moisture content
Strength - Influence of temperature
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Critical times, moisture contents and temperatures for detectable strength loss in plywood and oriented strand board : planning and proposed work|IN: Limiting conditions for decay : compilation of reports.

https://library.fpinnovations.ca/en/permalink/fpipub41214
Author
Clark, Jean E.
Morris, Paul I.
O'Connor, J.
Lum, Conroy
Date
April 2000
Material Type
Research report
Field
Sustainable Construction
Author
Clark, Jean E.
Morris, Paul I.
O'Connor, J.
Lum, Conroy
Contributor
Canada. Canadian Forest Service.
Date
April 2000
Material Type
Research report
Physical Description
10 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Mechanical properties
Strandboards
Physical properties
Plywood
Oriented strandboard
Orientation
Series Number
IN Canadian Forest Service No. 16;1963
W-1673
Location
Vancouver, British Columbia
Language
English
Abstract
The project objective is to identify the wood-rotting fungi causing decay in Canadian buildings, and to provide data for a numerical model which will provide an indication of the time required for initiation of strength loss in wood-based panels when exposed to a range of moisture contents and temperatures. The MEWS consortium led by the National Research Council's Institute for Research in Construction is developing a computer model to predict the moisture and temperature conditions within a construction assembly in service. By including a damage function calculation for the various building components, the model can predict the consequences of these conditions in terms of strength loss. We do not have strength data on North American wood species exposed to decay fungi under limiting conditions (20-30%). There is also no standard protocol for assessing strength loss due to decay in non-ideal conditions. Forintek's role is to develop an experimental protocol that will be universally acceptable in the field of wood science, and generate a data set from which one could derive a damage equation for wood decay as a function of time, temperature and moisture conditions. Discussions have established that strength loss in sheathing is the first priority. A series of proposed test methods were examined. In consultation with members of the consortium task force, a method was selected which was felt would provide suitable strength loss data within the constraints of the funding available.
Plywood - Strength
Oriented strandboard - Strength
Strength - Influence of moisture content
Strength - Influence of temperature
Documents
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91 records – page 1 of 10.