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44 records – page 1 of 5.

Chemical control of fungal stain in stored lodgepole pine logs

https://library.fpinnovations.ca/en/permalink/fpipub4212
Author
Clark, Jean E.
Date
March 1990
Edition
40953
Material Type
Research report
Field
Sustainable Construction
Author
Clark, Jean E.
Date
March 1990
Edition
40953
Material Type
Research report
Physical Description
24 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Stain fungal
Stain
Series Number
Forestry Canada No. 31
contract no.1712K005
W-772
Location
Vancouver, British Columbia
Language
English
Abstract
Summary included
Stains - Fungal - Control
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La coloration fongique dans les billes de resineaux Canadiens

https://library.fpinnovations.ca/en/permalink/fpipub5915
Author
Clark, Jean E.
Morin, M.
Date
March 1992
Edition
41586
Material Type
Research report
Field
Sustainable Construction
Author
Clark, Jean E.
Morin, M.
Date
March 1992
Edition
41586
Material Type
Research report
Physical Description
33 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Stain
Softwoods
Series Number
Forestry Canada No. 35
E-1438
Location
Ottawa, Ontario
Language
French
Abstract
Les taches biologiques sont susceptibles de se developper rapidement dans les billes sensibles aux contraintes de la nature qui sont entreposees a des termperatures elevees, ce qui entraine une baisse de valeur de la bille et du produit. Comme les scieries reclament un approvisionnement constant en matiere premiere et un acces saisonnier au parterre de coupe, il devient indispensable pour elles d'entreposer leurs billes. Dans pareil cas, les champignons de bleuissement peuvent infecter l'aubier de diverses facons : par le biais de l'extremite des billes, de defauts a l'ecorce qui est mise a nu et endommagee lors de la manutention, de dommages causes par les insectes et de fendillements. Par ailleurs, en periode de temps chauds, les champignons peuvent se developper rapidement dans l'aubier et provoquer une tache disgracieuse. Les objectifs de l'etude etaient les suivants : a) determiner l'importance du bleuissement dans les billes canadiennes et la perte de valeur marchande du produit, et b) etudier des methodes eventuelles d'attenuation des taches. Un certain nombre de scieries canadiennes ont repondu a un questionnaire afin de determiner l'amleur du probleme. La revue de l'ensemble des ouvrages publies sur cette question a permis d'etudier les origines de l'infection des billes et les mesures de lutte efficaces mises en oeuvre pour combattre ou enrayer le bleuissement; on a egalement demande aux experts internationaux de nous fournir de l'information sur la situation actuelle dans le monde. Les resultats de l'enquete effectuee dans l'est et dans l'ouest du Canada revelent que le bleuissement des billes, en particulier celles de pin, s'est traduit par une perte de valeur pour 46 des 73 usines, perte qui a pris la forme d'une baisse de qualite du produit, d'occasions commerciales ratees en vue d'ajouter de la valeur au produit et de privation d'avantage de marche la ou le bois net et sans defaut, quioque non exige, est souvent privilegie. Dans la litterature scientifique, le controle des stocks est vu comme une demarche essentielle. Les mesures d'entreposage les plus efficaces tiennent compte des exigences des champignons en matiere de conditions de temperature et d'humidite et d'un apport suffisant d'oxygene. Le stockage en bassin et l'arrosage des billes, qui permettent de maintenir une teneur en humidite elevee et de faibles quantites d'oxygene dans le bois, sont efficaces en vue d'empecher la degradation par les champignons et l'attaque par les insectes. Les recoltes saisonnieres et le traitement des essences vulnerables en saison froide sont egalement jugees des methodes tres efficaces. La lutte a l'aide de produits chimiques anti-tache et le traitemetn des extremites des billes connaissent une efficacite reduite et sont tres rarement utilisees. Meme si elles sont adequatement entreposees, les billes se deterioreront malgre tout avec le temps. Les usines qui envisagent l'entreposage par immersion ou la methode d'arrosage des billes devraient s'informer des reglements relatifs a la pollution et apporter une attention particuliere aux habitats de poisson. Grace a une gestion des stocks et a des mesures preventives d'entreposage dans le cas des billes de qualite elevee, les usines auraient l'occasion d'accroitre leur rendement de production.
Softwoods - Fungal Stains
Bluestain
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Comparison of oil and refrigeration storage methods on the wood- decaying capacity and viability of selected fungi

https://library.fpinnovations.ca/en/permalink/fpipub40974
Author
Setliff, E.C.
Clark, Jean E.
Date
March 1985
Material Type
Research report
Field
Sustainable Construction
Author
Setliff, E.C.
Clark, Jean E.
Date
March 1985
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Storage
Series Number
CFS Contract 02-65-12-162
W-194
Location
Vancouver, British Columbia
Language
English
Abstract
Fungi - Storage
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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
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Culture collection of wood fungi

https://library.fpinnovations.ca/en/permalink/fpipub42445
Author
Yang, D.-Q.
Clark, Jean E.
Date
May 2010
Material Type
Research report
Field
Sustainable Construction
Author
Yang, D.-Q.
Clark, Jean E.
Contributor
Canada. Canadian Forest Service
Date
May 2010
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood fungi
Wood
Glue
Series Number
CFS Simple Progress Report No. 26
Location
Québec, Québec
Language
English
Abstract
Wood fungi
Culture collection
Documents
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Culture collection of wood fungi

https://library.fpinnovations.ca/en/permalink/fpipub42385
Author
Yang, D.-Q.
Clark, Jean E.
Date
March 2007
Material Type
Research report
Field
Sustainable Construction
Author
Yang, D.-Q.
Clark, Jean E.
Contributor
Canada. Canadian Forest Service
Date
March 2007
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood fungi
Wood
Glue
Series Number
Canadian Forest Service No. 26
Location
Québec, Québec
Language
English
Abstract
Wood fungi
Culture collection
Documents
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Culture collection of wood fungi

https://library.fpinnovations.ca/en/permalink/fpipub42392
Author
Yang, D.-Q.
Clark, Jean E.
Date
March 2006
Material Type
Research report
Field
Sustainable Construction
Author
Yang, D.-Q.
Clark, Jean E.
Contributor
Canada. Canadian Forest Service
Date
March 2006
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood fungi
Wood
Glue
Series Number
Canadian Forest Service No. 26
Location
Québec, Québec
Language
English
Abstract
Wood fungi
Culture collection
Documents
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Culture collection of wood fungi

https://library.fpinnovations.ca/en/permalink/fpipub42402
Author
Yang, D.-Q.
Clark, Jean E.
Date
March 2008
Material Type
Research report
Field
Sustainable Construction
Author
Yang, D.-Q.
Clark, Jean E.
Contributor
Canada. Canadian Forest Service
Date
March 2008
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood fungi
Wood
Glue
Series Number
Canadian Forest Service No. 26
Location
Sainte-Foy, Québec
Language
English
Abstract
Wood fungi
Culture collection
Documents
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Culture collection of wood fungi

https://library.fpinnovations.ca/en/permalink/fpipub42412
Author
Yang, D.-Q.
Clark, Jean E.
Date
March 2009
Material Type
Research report
Field
Sustainable Construction
Author
Yang, D.-Q.
Clark, Jean E.
Date
March 2009
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Glue
Series Number
Canadian Forest Service No. 26
Location
Québec, Québec
Language
English
Abstract
Fungi - Collections
Documents
Less detail

44 records – page 1 of 5.