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State-of-the-art report on fibre reinforced polymer (FRP) utilization in wood products

https://library.fpinnovations.ca/fr/permalink/fpipub41302
Auteur
Pirvu, Ciprian
Date
June 2004
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Pirvu, Ciprian
Date
June 2004
Genre du document
Research report
Description physique
35 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Materials
Série
W-2073
Localisation
Vancouver, British Columbia
Langue
English
Résumé
Fibre-reinforced wood systems are light, strong, stiff composites that can efficiently replace larger wood members and can be relied on to provide consistent mechanical properties. This report is an introduction to fibre-reinforced wood systems for members of the Canadian wood products industry. It provides the motivation for reinforcing wood with synthetic fibres, and surveys the choice of materials and their uses. Numerous examples of current applications are discussed to demonstrate the strong and weak points of various approaches and examine the durability and management of fibre-reinforced wood products, as well as to indicate opportunities that exist for the Canadian wood products industry. This report is intended to be a useful reference for the Canadian wood products industry, and assist future developments in structural and non-structural applications of fibre-reinforced wood products.
Composite materials - Durability
Fibres
Board products - Materials used
Documents
Moins de détails

Load duration test protocols for engineered wood products

https://library.fpinnovations.ca/fr/permalink/fpipub37951
Auteur
Pirvu, Ciprian
Date
March 2009
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Pirvu, Ciprian
Collaborateur
Canada. Canadian Forest Service.
Date
March 2009
Genre du document
Research report
Description physique
12 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Building Systems
Sujet
Mechanical properties
Materials
Building construction
Série
Canadian Forest Service No. 4
W-2653
Localisation
Vancouver, British Columbia
Langue
English
Résumé
The objective of the project is to develop/improve practical, reliable and internationally recognized methods for assessing/pre-screening the long-term structural performance of engineered wood products used in residential and non-residential applications.
Building construction - Materials used - Strength
Documents
Moins de détails

Effect of on-line tension proof parameters on fingerjoined lumber performance

https://library.fpinnovations.ca/fr/permalink/fpipub37959
Auteur
Pirvu, Ciprian
Date
March 2009
Genre du document
Research report
Domaine
Wood Manufacturing & Digitalization
Auteur
Pirvu, Ciprian
Date
March 2009
Genre du document
Research report
Description physique
87 p.
Secteur
Wood Products
Domaine
Wood Manufacturing & Digitalization
Champ de recherche
Advanced Wood Manufacturing
Sujet
Mechanical properties
Joints
Série
Value to Wood No. FCC 021W
W-2668
Localisation
Vancouver, British Columbia
Langue
English
Résumé
Tension proof loading has been shown to be effective in eliminating low-strength fingerjoints, and a proof load stress level of 1.3 times the allowable stress value was found to be optimum. This confirms the tension proof loading stress requirement of the Canadian National Lumber Grades Authority (NLGA) for fingerjoined lumber. Proof loading stress levels were chosen at 1.0, 1.3 and 1.6 times the allowable stress, and loading rates were selected so that target stress was attained in 0.2, 6.0 or 60 seconds. The only effect of loading rate was a small increase in strength values for weaker specimens when tested at faster loading rates, along with increased variability; therefore, it is strongly recommended that very fast loading rates be avoided, and a loading rate be chosen so the desired stress level is attained in about one second. FPInnovations – Forintek performed this two-year study to provide a sound basis for evaluation of the tension proof-loading of fingerjoined lumber. The findings will be useful to the fingerjoined-lumber industry in refining the process and promoting its benefits to end users and regulators.
Glued joints - Finger - Strength
Documents
Moins de détails