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Applications du LIDAR pour améliorer l'inventaire forestier

https://library.fpinnovations.ca/en/permalink/fpipub53151
Author
Ung, Chhun-Huor
Date
Février 2012
Material Type
Presentation
Field
Partnerships

  1 video

Author
Ung, Chhun-Huor
Contributor
NRCAN
Date
Février 2012
Material Type
Presentation
Physical Description
Video ; 0:57:46
Sector
Forest Operations
Field
Partnerships
Research Area
Forestry
Subject
PIF
Series Number
PIF ; 2011-12
Language
French
Abstract
A presentation by Chhun-Huor Ungfor PIF (Partenariat Innovation Forêt)
Video Tracks
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Le programme Changements forestiers en support à l'adaptation aux changements climatiques

https://library.fpinnovations.ca/en/permalink/fpipub53155
Author
Bernier, Pierre
Date
Décembre 2012
Material Type
Presentation
Field
Partnerships

  1 video

Author
Bernier, Pierre
Contributor
NRCAN
Date
Décembre 2012
Material Type
Presentation
Physical Description
Video ; 1:08:24
Sector
Forest Operations
Field
Partnerships
Research Area
Forestry
Subject
PIF
Series Number
PIF ; 2012-13
Language
French
Abstract
A presentation by Pierre Bernier for PIF (Partenariat Innovation Forêt)
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Gestion forestière en Wallonie (Belgique) et valorisation énergétique de la biomasse

https://library.fpinnovations.ca/en/permalink/fpipub53159
Author
Marchal, Didier
Date
Octobre 2012
Material Type
Presentation
Field
Partnerships

  1 video

Author
Marchal, Didier
Contributor
NRCAN
Date
Octobre 2012
Material Type
Presentation
Physical Description
Video ; 1:29:38
Sector
Forest Operations
Field
Partnerships
Research Area
Forestry
Subject
PIF
Series Number
PIF ; 2012
Language
French
Abstract
A presentation by Didier Marchal for PIF (Partenariat Innovation Forêt)
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The integration of science, dialogue and stewardship for forest biotechnology?

https://library.fpinnovations.ca/en/permalink/fpipub53175
Author
McCord, Susan
Date
November 2012
Material Type
Presentation
Field
Partnerships

  1 video

Author
McCord, Susan
Contributor
NRCAN;Institute of Forest Biotechnology North Carolina
Date
November 2012
Material Type
Presentation
Physical Description
Video ; 1:20:26
Sector
Forest Operations
Field
Partnerships
Research Area
Forestry
Subject
PIF
Series Number
PIF ; 2012
Language
English
Abstract
A presentation by Susan McCord for PIF (Partenariat Innovation Forêt)
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Perspective sur la bioénergie forestiere dans le monde et au canada. Leçons du rapport du GIEC sur les énergies renouvables

https://library.fpinnovations.ca/en/permalink/fpipub53178
Author
Paré, David
Date
Février 2012
Material Type
Presentation
Field
Partnerships

  1 video

Author
Paré, David
Contributor
NRCAN
Date
Février 2012
Material Type
Presentation
Physical Description
Video ; 1:17:18
Sector
Forest Operations
Field
Partnerships
Research Area
Forestry
Subject
PIF
Series Number
PIF ; 2012
Language
French
Abstract
A presentation by David Paré for PIF (Partenariat Innovation Forêt)
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FPInterface. Planification forestière, optimisation de l'allocation des bois et sélection des bois mis à l'enchère

https://library.fpinnovations.ca/en/permalink/fpipub53296
Author
Blouin, Mathieu
Date
2012
Edition
PIF
Material Type
Presentation
Field
Partnerships

  1 video

Author
Blouin, Mathieu
Date
2012
Edition
PIF
Material Type
Presentation
Physical Description
Video ; 1:10:10
Sector
Forest Operations
Field
Partnerships
Research Area
Forestry
Series
PIF ; 2012
Language
French
Abstract
A presentation by Mathieu Blouin for PIF (Partenariat Innovation Forêt)
Video Tracks
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Forêts et humains: une communauté des destins

https://library.fpinnovations.ca/en/permalink/fpipub53066
Author
Villeneuve, Claude
Date
Mars 2012
Material Type
Presentation
Field
Partnerships

  1 video

Author
Villeneuve, Claude
Contributor
Université du Québec à Chicoutimi (UQAC)
Natural Resources Canada
Date
Mars 2012
Material Type
Presentation
Physical Description
Video ; 1:32:42 min.
Sector
Forest Operations
Field
Partnerships
Subject
PIF
Series
Les Colloques du SCF-CFL
Series Number
PIF; 2020
Language
French
Abstract
A presentation by Claude Villeneuve from the Université du Québec à Chicoutimi for PIF (Partenariat Innovation Forêt), March 8 2012
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Handbook on portable bandsaw-type sawmills

https://library.fpinnovations.ca/en/permalink/fpipub49490
Author
Folkema, Michael P.
Date
March 2012
Material Type
Research report
Field
Fibre Supply
Author
Folkema, Michael P.
Date
March 2012
Material Type
Research report
Physical Description
65 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Transportation Infrastructure
Subject
Band saws
Manufacturing
Saw mills
Lumber production
Productivity
Costs
Series Number
FO Handbook ; HB 10
Language
English
Abstract
This handbook is intended as a guide for entrepreneurs who wish to generate income for themselves by sawing lumber and other products using portable bandsaw-type sawmills, either on a part-time or full-time basis. The handbook is based on a series of case studies of successful sawmill operators located throughout eastern Canada. This approach permittted FERIC staff to study a variety of equipment and operating techniques and to make recommendations on how to improve sawing efficiency and reduce costs. The study also determined that since 1982, when the first portable bandsaw mills were introduced, there have been many design improvements made by the manufacturers which have resulted in higher productivity, greater mechanical reliability and lower operating costs.
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Builders' needs in the 20 U.S. homebuilding markets of the Case Shiller Index

https://library.fpinnovations.ca/en/permalink/fpipub2776
Author
Robichaud, F.
Date
March 2012
Edition
39394
Material Type
Research report
Field
Sustainable Construction
Author
Robichaud, F.
Date
March 2012
Edition
39394
Material Type
Research report
Physical Description
25 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Market Analysis
Subject
United States (USA)
Materials
Building construction
Series Number
Future Focus No. TT1.1.09
E-4734
Location
Québec, Québec
Language
English
Abstract
This project relied upon a survey of 562 homebuilders in the 20 U.S. metro areas of the Case Shiller Index;
Objectives were to uncover homebuilders’ needs in insulation materials, wall sheathing, studs, floor joists, roof systems, and prefabricated walls. Other objectives were to monitor the substitution of wood products at the metro level;
In insulation products, most important builders’ needs are improving R value and improving water tightness of the envelope;
In wall sheathing, the most important need is to improve the water tightness of the envelope;
For studs, the most important needs are to increase straightness and to decrease both lumber sorting and rejection on site;
For floor joists, the most important needs are to improve the product to reduce floor squeaks and to improve the product to ease the installation of ducts, plumbing and wires;
In roof systems, the most important need is to improve products to make attic space available;
In prefabricated walls, the most important needs are to reduce the time delay between order and delivery, and to ease the process of making plans changes when using prefab walls;
24% of respondents feel that the use of concrete as a primary structural floor material will increase greatly or somewhat. 56% think that the product to be used is poured concrete over steel deck, 44% think it will be precast/prestress panels;
20% of respondents feel that the use of concrete as a primary structural wall material will increase greatly or somewhat. Poured (formwork) is the most often foreseen technology (50%) followed by blocks (masonry) at 27% and precast or prestressed panels at 23%;
Statistically, the expected future use of concrete has not changed overall between 2008 and 2011;
In wall systems, untreated wood products have gained much market share between 2008 (69%) and 2011 (88%). This was especially done at the expense of pressure treated wood products and concrete blocks;
In floor systems, untreated wood products have gained significant market share between 2008 (65%) and 2011 (80%). This gain was done at the expense of pressure treated products especially;
The use of OSB as a floor sheathing material has almost remained unchanged between 2008 (46% market share) and 2011 (47%). The market share for plywood in floor sheathing has shrunk from 29 to 26% over that period, while treated products (OSB or Plywood) have increased their share from 17% to 21%;
In wall sheathing, OSB has lost a few points in market share, from 57% to 55% between 2008 and 2011. Plywood, too, had a lost, from 18% to 16%. Products who have experienced small percentages of increase, albeit coming from a lower base in the market, are preservative/mold treated OSB, Radiant Barrier OSB, and Foam sheathing; and,
In decking materials, the rapid rise of market share for composite decking appeared to come to a halt. Between 2008 and 2011, the market share for this product category has been stable at some 29%. Meanwhile, the market share for both treated and untreated wood products has increased.
Building construction - Materials used - United States
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Amélioration de la performance des outils de coupe via la nanodéposition par plasma

https://library.fpinnovations.ca/en/permalink/fpipub2790
Author
Laganière, B.
Date
March 2012
Edition
39414
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Laganière, B.
Contributor
Canada. Canadian Forest Service
Date
March 2012
Edition
39414
Material Type
Research report
Physical Description
15 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Tools
Plasma
Series Number
Valeur au bois no FPI-11-10
Projet no 201005269
E-4760
Location
Québec, Québec
Language
French
Abstract
CUTTING TOOLS
PLASMA
Nanotechnology
Abstract
Ce rapport présente les résultats obtenus du projet « Amélioration de la performance des outils de coupe par traitement par nanodéposition plasma » qui a débuté le 1er avril 2011 et s’est terminé le 31 mars 2012. L’objectif du projet était de traiter des outils afin d’en améliorer la performance en usine. Cette étude a permis de faire des avancées dans la connaissance et dans l’expérimentation du traitement des outils de coupe par dépôts de couches minces par pulvérisation cathodique. Des collaborations entreprises avec l’Université de Montréal et Arts et Métiers ParisTech de Cluny en France ont permis d’avancer nos connaissances; de même, des traitements effectués chez ces partenaires ont pu être expérimentés en conditions industrielles dans des usines au Québec. Cette étude a permis aussi de corroborer les résultats obtenus dans des tests effectués l’année dernière et qui avaient permis d’atteindre une amélioration de la durée de vie d’environ 35 % pour des outils de canter dans une étude préliminaire. Par la suite, des gains de 43 % ont été obtenus pour une étude plus étendue pour les couteaux de canter. Un autre test effectué avec des scies circulaires dans du bois feuillu avait permis d’obtenir une longévité de 50 %. Ces tests ont permis de corroborer les résultats du test préliminaire et démontrent l’efficacité des traitements de surface des outils par pulvérisation cathodique pour l’industrie de la transformation primaire. Une expertise a pu être montée dans l’opération du réacteur et les paramètres ont été obtenus afin de faire du dépôt avec du CrN. Un service direct de traitement d’outils de coupe est maintenant disponible chez FPInnovations pour effectuer des dépôts de CrN et qui peuvent aider l’entreprise canadienne à mieux d’être plus compétitive.
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Canadian value added sector survey

https://library.fpinnovations.ca/en/permalink/fpipub2791
Author
Julien, F.
Date
February 2012
Edition
39415
Material Type
Research report
Field
Sustainable Construction
Author
Julien, F.
Contributor
Canada. Canadian Forest Service
Date
February 2012
Edition
39415
Material Type
Research report
Physical Description
23 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Value added
Surveys
Secondary manufacturing
Canada
Series Number
Value to Wood No. 201005269
Project No. FPI-11-19
E-4761
Location
Québec, Québec
Language
English
Abstract
A Roadmap for the Canadian Value Added Wood Products Industry and the Prefabricated Building Systems Industry was completed in 2007 under the Value to Wood Program. Current information is needed to confirm actual industry’s needs for innovation. The project consisted in conducting a Value Added Sector Assessment Survey to update the previous Roadmap. Information and data were essentially collected through the use of an online interactive survey prepared by the FPInnovations’ economics and markets group. A total of 2,086 industry and research people were contacted to complete the questionnaire. Of that total, 256 respondents returned questionnaires which were kept for analysis. The study has reviewed the research issues and needs raised by industry respondents. These issues and needs were analyzed and sorted in different themes and then compared to the findings of the 2007 roadmap. The conclusions of the study are notably:
The driving forces of innovation identified in 2007 are still relevant and valid today o Global competition and consumers needs are the main driving forces leading businesses to seek greater manufacturing and cost efficiencies.
The priorities and research needs identified in the 2007 Roadmap are still pertinent today o There is a need to increase product development capacities through better design, better finishing, better quality, etc. o Provide relevant and up to date market intelligence information to support the value added sectors.
Value added - Canada
Secondary manufacturing
Market surveys
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Améliorer la stabilité dimensionnelle et la résistance aux moisissures par des stratégies d'imprégnation de surface

https://library.fpinnovations.ca/en/permalink/fpipub2797
Author
Vlad, Mirela
Drouin, M.
Landry, Vincent
Date
March 2012
Edition
39421
Material Type
Research report
Field
Sustainable Construction
Author
Vlad, Mirela
Drouin, M.
Landry, Vincent
Date
March 2012
Edition
39421
Material Type
Research report
Physical Description
55 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood
Outdoors
Impregnation
Application
Series Number
Programme des technologies transformatrices
Projet TT.1.2.01
Project no.201005107
E-4769
Location
Québec, Québec
Language
French
Abstract
Dans ce projet, nous avons ciblé l’amélioration de la durabilité du bois à usage extérieur (lambris et fenêtres) par l’imprégnation avec des produits qui pénètrent dans la paroi cellulaire du bois puis polymérisent afin de provoquer une densification de la surface du bois. Bien que l’imprégnation du bois soit répandue pour des applications spécialisées, ce procédé reste encore peu répandu dans l’industrie du bois. Le coût important des produits d’imprégnation mais surtout les coûts de procédé élevés freinent son utilisation industrielle. Afin de répondre à cette problématique, un procédé rapide d’imprégnation de l’épinette et du pin sous vide et dans une cabine de pulvérisation (spray booth) ont été pris en considération. Plusieurs traitements à base de suspensions acryliques et résines acrylates ont été formulés et testés sur le pin blanc et l’épinette blanche. Les avantages des nanoparticules absorbants des rayons UV et ayant des propriétés antibactériennes ont été pris en considération contre la photodégradation du bois et le développement des moisissures. Deux systèmes à base de résines acrylates ont été utilisés afin d’améliorer la stabilité dimensionnelle du bois par la protection contre la pénétration d’eau. Un effet synergique potentiel du système résine-nanoparticules a été recherché. La densification de la surface et le taux d’imprégnation du pin ont été plus élevés que dans le cas de l’épinette. Toutefois, les produits d’imprégnation ont pénétré plus profondément dans le bois d’épinette. Les résultats obtenus ont démontré que l’efficacité de l’imprégnation avec des produits chimiques dépend du type de produit ainsi que de l’espèce du bois. Les différences de croissance fongique dans les essais de résistance aux moisissures ont été plus facilement visibles pour les séries du pin traitées en comparaison avec les séries d’épinette. Des traitements à base d’acrylate (sans et avec des nanoparticules de ZnO et TiO2) ont montré une certaine efficacité. Une stabilité dimensionnelle élevée et l’absorption d’eau améliorée du bois traité a été obtenue pour des traitements à base du système acrylate. Ces résultats ont joué un rôle important dans l’amélioration de la résistance aux UV des échantillons traités avec du revêtement. Un système à base d’acrylate a montré les plus faibles DL* après le vieillissement accéléré. Une stabilisation du changement de la couleur a été obtenue pour le traitement 0,5 % nano-CuO dans une suspension acrylique et le traitement contenant 1 % de nanoparticules de ZnO dans le système acrylate.
IMPREGNATION
DURABILITY
Outdoor applications
WOOD
Abstract
Dans ce projet, nous avons ciblé l’amélioration de la durabilité du bois à usage extérieur (lambris et fenêtres) par l’imprégnation avec des produits qui pénètrent dans la paroi cellulaire du bois puis polymérisent afin de provoquer une densification de la surface du bois. Bien que l’imprégnation du bois soit répandue pour des applications spécialisées, ce procédé reste encore peu répandu dans l’industrie du bois. Le coût important des produits d’imprégnation mais surtout les coûts de procédé élevés freinent son utilisation industrielle. Afin de répondre à cette problématique, un procédé rapide d’imprégnation de l’épinette et du pin sous vide et dans une cabine de pulvérisation (spray booth) ont été pris en considération. Plusieurs traitements à base de suspensions acryliques et résines acrylates ont été formulés et testés sur le pin blanc et l’épinette blanche. Les avantages des nanoparticules absorbants des rayons UV et ayant des propriétés antibactériennes ont été pris en considération contre la photodégradation du bois et le développement des moisissures. Deux systèmes à base de résines acrylates ont été utilisés afin d’améliorer la stabilité dimensionnelle du bois par la protection contre la pénétration d’eau. Un effet synergique potentiel du système résine-nanoparticules a été recherché. La densification de la surface et le taux d’imprégnation du pin ont été plus élevés que dans le cas de l’épinette. Toutefois, les produits d’imprégnation ont pénétré plus profondément dans le bois d’épinette. Les résultats obtenus ont démontré que l’efficacité de l’imprégnation avec des produits chimiques dépend du type de produit ainsi que de l’espèce du bois. Les différences de croissance fongique dans les essais de résistance aux moisissures ont été plus facilement visibles pour les séries du pin traitées en comparaison avec les séries d’épinette. Des traitements à base d’acrylate (sans et avec des nanoparticules de ZnO et TiO2) ont montré une certaine efficacité. Une stabilité dimensionnelle élevée et l’absorption d’eau améliorée du bois traité a été obtenue pour des traitements à base du système acrylate. Ces résultats ont joué un rôle important dans l’amélioration de la résistance aux UV des échantillons traités avec du revêtement. Un système à base d’acrylate a montré les plus faibles DL* après le vieillissement accéléré. Une stabilisation du changement de la couleur a été obtenue pour le traitement 0,5 % nano-CuO dans une suspension acrylique et le traitement contenant 1 % de nanoparticules de ZnO dans le système acrylate.
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Alternatives to slack wax

https://library.fpinnovations.ca/en/permalink/fpipub2802
Author
Wan, Hui
Date
March 2012
Edition
39428
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Wan, Hui
Date
March 2012
Edition
39428
Material Type
Research report
Physical Description
27 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waxes
Strands
OSB
Oriented strandboard
Orientation
Series Number
General Revenue Report Project No. 201004857
E-4780
Location
Québec, Québec
Language
English
Abstract
In this project, a comprehensive experiment studied the impact of wax type, wax content, wax heating temperature and wax molecular weight on OSB panel performance. It shows that to allow tall oil, hydrogenated soybean wax, linseed oil, and low density polyethylene (LDPE) to be used for OSB, further work is needed. We need to add wax in the OSB process; otherwise panel dimensional stability will be ruined. There is an optimal wax content of around 1% in OSB production. The wax content in OSB panel did not need to be higher than 1%. With the waxes tested, wax heating temperature should be higher than 90°C. At a fixed wax heating temperature, optimal wax molecular weight is 520 Daltons for OSB application. Applying high molecular weight wax (600 Daltons) on panel surface may help to improve panel bending strength. The experiment shows that partial substitution of slack wax with LDPE at the OSB panel surface layer may be feasible. Experimental results also show that using contact angle and surface tension tests may help us to screen waxes for OSB panel application. Based on the experimental data, one should handle different waxes in different ways. By engineering wax application parameters one can develop a cost effective way to produce composite panels to meet dimensional stability requirement. Further testing on the feasibility of using contact angle and surface tension to differentiate wax should be conducted. Emulsifying low density polyethylene should be further investigated. Further research is also needed to verify how wax operational parameters affect panel strength.
WAX
Oriented Strand Board (OSB)
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Élément 4 : Développement de nouveaux procédés et technologies pour l'industrie des bois feuillus (Projet 1) - Analyse du cycle de vie des palettes en bois du berceau au tombeau

https://library.fpinnovations.ca/en/permalink/fpipub39395
Author
Lavoie, P.
Date
March 2012
Material Type
Research report
Field
Sustainable Construction
Author
Lavoie, P.
Date
March 2012
Material Type
Research report
Physical Description
26 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Pallets
Analysis
Series Number
Programme des technologies transformatrices ; Projet TT.4.3.03
201005167
Location
Québec, Québec
Language
French
Abstract
Une analyse du cycle de vie de la palette de bois feuillus produite dans l’Est du Canada en 2008. L’analyse portait sur l’ensemble des phases du cycle de vie de l’extraction des ressources jusqu’à la fin de vie en passant par la fabrication des palettes. L’analyse repose en majeure partie sur des données primaires provenant de trois usines du Québec et du Nouveau-Brunswick dont la production combinée représente environ 10 % de la production canadienne de palettes de bois feuillus.
Life-Cycle Analysis
Pallets
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Élément 4 : Développement de nouveaux procédés et technologies pour l'industrie des bois feuillus (Projet 9) - Définition des technologies de transformation requises

https://library.fpinnovations.ca/en/permalink/fpipub39396
Author
McDonald, J. David
Date
March 2012
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
McDonald, J. David
Date
March 2012
Material Type
Research report
Physical Description
18 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Processing
Hardwoods
Series Number
Programme des technologies transformatrices ; Projet TT.4.3.03
201005167
Location
Québec, Québec
Language
French
Abstract
L’objectif de ce projet était d’acquérir des connaissances sur les problèmes de fausse détection occasionnés par l’oxydation et la présence de marques ou d’impuretés sur la surface des sciages bruts à l’état vert lors du scannage. Les tests ont permis d’identifier douze différents types de marques ou impuretés de surface qui pourraient biaiser la décision des systèmes de vision. Selon les procédés de fabrication et les équipements utilisés, on les retrouve sur 17 % à 80 % des sciages produits en scierie. Les impuretés les plus fréquemment observées sont les marques de chaines, la présence de sciure et les marques causées par le contact des scies avec un nœud contenant de l’écorce ou de la carie. À eux seuls, ces trois types d’impuretés comptent, dans certains cas, pour plus de 93 % des marques identifiées. Ces types d’impuretés n’ont pas tous la même influence sur la performance d’un système de vision. Certaines marques sont filtrées adéquatement et n’ont aucune répercussion sur la décision de scannage alors que d’autres sont perçues comme des défauts ou camouflent un défaut existant, ce qui a pour conséquence de déclasser ou de surclasser les sciages. L’impact des fausses détections sur la valeur des sciages diffère énormément selon le nombre et la catégorie d’erreurs ainsi que la qualité initiale des sciages affectés par les impuretés. Certains types d’impuretés ont conduit à des pertes de 446 $/Mpmp alors que d’autres ont entraîné des gains de 9 $/Mpmp. Lorsque pondérées, ces fausses détections représentent pour une scierie un manque à gagner annuel pouvant atteindre 250 000 $, si aucune mesure corrective n’est prise pour remédier à la situation. À cet effet, des pistes de solution visant à éliminer ou à limiter les marques ou impuretés à la surface des sciages sont décrites dans ce rapport. Quant à l’oxydation, les tests effectués durant l’hiver démontrent qu’à l’intérieur d’une période approximative de 24 heures, la coloration qui en résulte n’est pas assez importante pour modifier la décision du système de vision. Nous suggérons que d’autres tests soient effectués pour connaître l’impact de l’oxydation dans des conditions différentes.
Processing
Hardwoods
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Element 4 : Hardwood initiative - Development of new processes and technologies in the hardwood industry : Best practices to avoid hardwood checking. Part 1. Hardwood checking - the causes and prevention

https://library.fpinnovations.ca/en/permalink/fpipub39397
Author
Yang, D.-Q.
Normand, D.
Date
March 2012
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Yang, D.-Q.
Normand, D.
Date
March 2012
Material Type
Research report
Physical Description
20 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Hardwoods
Lumber defects
Series Number
Transformative Technologies Program ; Project No. TT4.3.03
201005167
Location
Québec, Québec
Language
English
Abstract
Wood checking is a major problem that has a significant economic impact for hardwood producers and consumers. Wood checking can occur on logs, green lumber, dried lumber and final products during manufacturing, drying process, storage and end-use. Checking on wood products is caused by many internal and external factors such as wood species, moisture content, storage method, drying process, temperature, relative humidity, air flow velocity and solar radiation. While it is impossible to completely eliminate wood checking; it however can be controlled to an acceptable level with proper measures. The control measures include best practices in harvesting, storage, sawing, drying, chemical coatings, physical methods and controlling end-use environmental conditions. This report provides scientific information on the nature of different types of checks that may occur on various wood products, checking conditions and control measures.
Hardwoods - Defects
Control
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Guide for wind-vibration design of wood-frame buildings

https://library.fpinnovations.ca/en/permalink/fpipub39398
Author
Hu, Lin J.
Date
April 2012
Material Type
guide
Research report
Field
Sustainable Construction
Author
Hu, Lin J.
Contributor
Canadian Forest Service
Date
April 2012
Material Type
guide
Research report
Physical Description
22 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood frame
Wood
Wind loads
Wind
Vibration
Loads
Series Number
Canadian Forest Service No. FRII-3.19
201004697
Location
Québec, Québec
Language
English
Abstract
It is not surprising to see a rapid growth in the demand for mid- to high-rise buildings. Traditionally, these types of buildings have been dominated by steel and concrete. This trend creates a great opportunity for wood to expand its traditional single and low-rise multi-family building market to the growing mid- to high-rise building market. The significance and importance of wood construction to environmental conservation and the Canadian economy has been recognized by governments, the building industry, architects, design engineers, builders, and clients. It is expected that more and more tall wood frame buildings of 6- to 8-storeys (or taller) will be constructed in Canada. Before we can push for use of wood in such applications, however, several barriers to wood success in its traditional and potential market places have to be removed. Lack of knowledge of the dynamic properties of mid- to high-rise wood and hybrid wood buildings and their responses to wind, and absence of current guidelines for wind vibration design of mid- to high-rise wood and hybrid wood buildings are examples of such barriers. This report summarises results from the first year study of this project and from other two one-year related projects. The main objective of the study was to build a framework for the development of design guide for controlling wind-induced vibration of mid- to high-rise wood and hybrid wood frame buildings, to ensure satisfactory vibration performance during high winds. A literature review of the existing database of the dynamic properties of 1- to 3-storey wood platform buildings was conducted. The test system and protocols of ambient vibration tests (AVT) was developed. Collaboration with McGill University was also established to verify the AVT system and the test protocols. AVT tests were conducted on two 2-storey non-residential hybrid heavy timber platform buildings, three new heavy timber (glulam) non-residential buildings of 4-6 storeys and on two cross-laminated timber (CLT) condominium buildings of 3 and 4 storeys. The monitoring system to determine the vibration response in wind of mid-to high-rise wood frame building was developed. The database consisting of the data in the literature and our measured fundamental natural frequencies of the wood frame building were used to verify the NBCC equations to estimate building fundamental natural frequencies. Collaboration with Tongji University was established to explore the potential use of the finite element commercial software Ansys, for simulation of vibration performance of wood frame buildings. It is concluded that the project was on the right track towards the development of a design guide for controlling wind-induced vibrations of mid- to high-rise wood frame buildings. The results from this study and other two relevant projects confirmed that AVT and computer simulation are useful, and appropriate tools for the development of solutions and a design guide for controlling wood frame building vibrations in wind. It is recommended that current NBCC equations using building height as a variable to estimate the building fundamental natural frequency can be used to predict the fundamental natural frequencies of wood frame buildings, until a better calculation methodology is developed. More field data of the fundamental natural frequencies measured on mid- to high-rise wood frame or hybrid wood buildings are needed to further verify the NBCC equations, or to develop more suitable equations for wood buildings.
Wind loads
Vibration control
Wood frame buildings
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Evaluation of new methods to enhance colour uniformity of pine

https://library.fpinnovations.ca/en/permalink/fpipub39403
Author
Stirling, Rod
Morris, Paul I.
Date
March 2012
Material Type
Research report
Field
Sustainable Construction
Author
Stirling, Rod
Morris, Paul I.
Contributor
Natural Resources Canada. Canadian Forest Service
Date
March 2012
Material Type
Research report
Physical Description
10 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood
Weathering
Series Number
Canadian Forest Service No. 23
W-2882
Location
Vancouver, British Columbia
Language
English
Abstract
In the built environment wood surfaces often experience different exposure conditions, particularly exposure to sunlight. This can result in part of a surface receiving full sun, while other parts may be completely shaded. Methods that minimize the resulting colour differences between exposed and shaded areas would enhance the aesthetic appeal of wood. In the present work a “pre-weathering” approach to wood colour stabilization was investigated. After two months of natural exposure, colour change was similar regardless of pre-exposure. The heartwood samples in a shade exposure were much more discoloured than the equivalent sapwood samples. This suggests that heartwood extractive oxidation is a major cause of initial heartwood discolouration. The samples exposed to the sun did discolour more, indicating a UV/Visible light effect as well.
Colour of wood
Weathering
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Design guidelines for lateral load resisting systems in wood construction

https://library.fpinnovations.ca/en/permalink/fpipub39404
Author
Popovski, Marjan
Date
March 2012
Material Type
guide
Research report
Field
Sustainable Construction
Author
Popovski, Marjan
Contributor
Natural Resources Canada. Canadian Forest Service.
Date
March 2012
Material Type
guide
Research report
Physical Description
115 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Strength load bearing
Mechanical properties
Specifications
Loads
Specification
Design
Building construction
Series Number
Canadian Forest Service No. 03
W-2886
Location
Vancouver, British Columbia
Language
English
Abstract
A new design Section on Lateral Load Resisting Systems (LLRSs) was introduced in the 2009 edition of Canadian Standard for engineering Design in Wood (CSA O86). The activities presented in this report (development of technical papers, development of technical polls and attending various code committees) have a goal to continue the work in this field by further improving the new Section on LLRSs by implementing additional design information for other wood-based structural systems and assemblies. During the last two years, several technical polls and papers were developed and presented to various code committees for future code implementation. These activities will help design engineers to use timber in structural systems in residential and non-residential buildings in Canada and the US.
Building construction - Design
Strength - Load bearing - Specifications
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Effect of adhesive cure on quality of fingerjoined lumber : updated report

https://library.fpinnovations.ca/en/permalink/fpipub39405
Author
Pirvu, Ciprian
Date
March 2012
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Pirvu, Ciprian
Contributor
Natural Resources Canada. Canadian Forest Service.
Date
March 2012
Material Type
Research report
Physical Description
56 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Lumber
Composites
Adhesives
Series Number
Value to Wood No. FPI 121W
W-2888
Location
Vancouver, British Columbia
Language
English
Abstract
The relationship between proof load level of fingerjoined lumber and degree of cure of adhesive bonds was investigated. Tension tests were completed for two different degrees of cure for two different adhesives. The proof load level determined for the partially cured joints did not cause damage to the joints that survived the proof test. Preliminary guidelines for determining appropriate proof load levels for testing fingerjoined lumber with partially cured joints were proposed. The proposed guidelines will need to be validated through mill trials to demonstrate their efficacy and reliability to the manufacturer and third party inspection agency. Keywords: fingerjoined lumber; tension proof testing/loading; partially cured adhesive bonds.
Curing rate
Finger jointed lumber
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