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8 records – page 1 of 1.

Performance of borate-treated glulam and LVL after eight years in an accelerated above-ground field test

https://library.fpinnovations.ca/en/permalink/fpipub40029
Author
Ingram, Janet K.
Morris, Paul I.
Date
June 2015
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Ingram, Janet K.
Morris, Paul I.
Contributor
Natural Resources Canada. Canadian Forest Service
Date
June 2015
Material Type
Research report
Physical Description
58 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Composites
Laminate product
Preservatives
Preservatives boron
Series Number
Field Performance of Durable Wood Products
Language
English
Abstract
Glulam and laminated veneer lumber protected by a combination of treatment with borate by two processes, and a film-forming coating, were exposed outdoors in an above-ground field test using a modified post and rail test design. After eight years’ exposure, early to moderate decay was found in untreated test units, while those which were borate-treated by either method were generally sound up to six years and showed greatly reduced decay at eight years.
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Performance of preservative-treated glulam after six years in an accelerated above-ground field test

https://library.fpinnovations.ca/en/permalink/fpipub40036
Author
Ingram, Janet K.
Morris, Paul I.
Date
June 2015
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Ingram, Janet K.
Morris, Paul I.
Contributor
Natural Resources Canada. Canadian Forest Service
Date
June 2015
Material Type
Research report
Physical Description
23 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Composites
Laminate product
Preservatives tests
Series Number
W3214
Language
English
Abstract
Glulam manufactured from laminating stock of three species pre-treated with ACQ-D or CA was exposed outdoors in an above-ground field test using a modified post and rail test design. After six years’ exposure, early to moderate decay was found in untreated test units, while those which were preservative-treated were completely sound.
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Field tests of treated thin-lamina glulam after five years of exposure

https://library.fpinnovations.ca/en/permalink/fpipub40062
Author
Morris, Paul I.
Ingram, Janet K.
Date
October 2015
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Morris, Paul I.
Ingram, Janet K.
Contributor
Natural Resources Canada. Canadian Forest Service
Date
October 2015
Material Type
Research report
Physical Description
21 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Composites
Laminate product
Preservatives tests
Series Number
Field Performance of Durable Wood Products
W3260
Language
English
Abstract
Field tests of untreated and preservative-treated glulam beams in outdoor exposure, in ground contact and above ground, were inspected for decay after five years. Copper azole and ACQ-D-treated material was in excellent condition, while moderate to severe decay was present in untreated non-durable material. Early stages of decay were also noted in yellow cedar glulam in the above-ground test. Using galvanized rather than stainless steel fasteners appeared to have a protective effect against decay in untreated material, supporting the hypothesis that zinc from the sacrificial coating on galvanized bolts inhibits germination of basidiospores.
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New attributes and economic analyses of composite CLT and value-added appearance-based CLT

https://library.fpinnovations.ca/en/permalink/fpipub39833
Author
Grandmont, Jean-Francois
Wang, Brad J.
Date
March 2014
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Grandmont, Jean-Francois
Wang, Brad J.
Contributor
Natural Resources Canada. Canadian Forest Service.
Date
March 2014
Material Type
Research report
Physical Description
44 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Composites
Laminate product
Timber
Value added
Series Number
Transformative Technologies Program
W-3097
Language
English
Abstract
The objective of this study was to examine new attributes and conduct economic analyses for composite CLT (CCLT) and value-added appearance-based CLT products manufactured with varying substitution of softwood lumber with structural composite lumber (SCL) and hardwood lumber. Incentives for including such materials could be aesthetic, structural and economic. Structural and aesthetic property assessments were carried out on prototype CLT panels. Multiple CLT panel configurations (17) were evaluated to assess the effects of including hardwood and SCL materials in the layups. Presence of hardwood in the panels’ configuration generally led to higher checking and density. Because of the higher shrinkage of hardwood, the bondline suffered from more delamination. A lower density hardwood (aspen) was included in some configurations and exhibited a greater direct compatibility with current Canadian manufacturing process. Changes to this process, such as selecting a hardwood specific adhesive may lead to improvements. SCL’s inclusion in the panels’ layup revealed to be fairly compatible with the current CLT manufacturing process. Both LVL and LSL products performed equally well or better than the reference lumber-made CLT panel for the bondline quality, dimensional stability and visual defects development. The efficiency of the manufacturing process of the prototype CLT panels was improved when EWP was included in the layup. The lesser amount of components and the readily flat surface of SCL may have a positive impact on the economics of CLT manufacturing due to an improved efficiency. Substitution products evaluated are characterized by a higher market price than lumber. CLT made from a combination of LSL or LVL and softwood lumber would cost about $100/m3 more to get the same return if there were no changes in the manufacturing. The burden of this cost increase would have to be offset by unique series of attributes that would add value for the customer and/or by a greater manufacturing efficiency.
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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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Finger jointing of lumber : maximizing product yield and value

https://library.fpinnovations.ca/en/permalink/fpipub38187
Contributor
Forintek Canada Corp.
Date
November 1984
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
November 1984
Material Type
Research report
Physical Description
108 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Lumber
Composites
Series Number
Special Publication SP-512E
Location
Ottawa, Ontario
Language
English
ISBN
ISBN-0-86488-512-1
Abstract
Proceedings of a Seminar organized by Forintek Canada Corp. and held in 1984. Increasing product yield and value of solid wood fiber is a common denominator in the forest products industries of Canada and all lumber producing countries around the world. As the quality of the existing forest resources decrease, the forest products wood working and building industries can expect a reduction in grade and length of lumber. One possible solution to this problem is to finger joint short materials into premium lengths, and produce higher value products. Finger jointing is an established process for the manufacture of glued-laminated lumber beams and wood mouldings. More recently, finger jointing has found applications in the production of structural lumber for building purposes. The seminar focused on: production systems, quality control, adhesives, economics, use of finger jointed products, regulations, marketing and government programs.
Finger Joints - Congresses
Lumber - Joints and Fastenings - Finger
Forintek Canada Corp. - Publications
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Flexural properties of structural waferboard and poplar plywood and use of the lumber testing device to test composite framing members in edgewise flexure

https://library.fpinnovations.ca/en/permalink/fpipub38266
Author
Alexopoulos, J.
Date
January 1983
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Alexopoulos, J.
Date
January 1983
Material Type
Research report
Physical Description
48 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Testing
Composites
Structural composites
Mechanical properties
Plywood
Series Number
CFS/DSS project 4/82-83
Project no.5557359
E-882
Location
Ottawa, Ontario
Language
English
Abstract
Structural Composites - Properties
Structural Plywood - Properties
Lumber - Strength - Testing
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Behavior of composite lumber under long-term loading

https://library.fpinnovations.ca/en/permalink/fpipub1764
Author
Alexopoulos, J.
Shields, J.A.
Date
March 1982
Edition
38281
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Alexopoulos, J.
Shields, J.A.
Date
March 1982
Edition
38281
Material Type
Research report
Physical Description
24 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Testing
Composites
Structural composites
Mechanical properties
Series Number
3-55-43-306
E-943
Location
Ottawa, Ontario
Language
English
Abstract
Composite Structural Members - Testing
Structural Composites - Strength
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8 records – page 1 of 1.