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Article: Effect of moisture content and temperature on tension strength of fingerjointed black spruce lumber.
- Article from:
- Forest Products Journal
- Article date:
- December 1, 2005
- Author:
CopyrightCOPYRIGHT 2005 Forest Products Society. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
To optimize product performance, the various parameters which can influence the complex fingerjointing process must be evaluated. Among key variables are the conditions of the lumber blanks including moisture content (MC) and temperature. Black spruce (Picea mariana (Mill) B.S.P.) 2-by 3-inch blocks at different MCs (12%, 16%, 20%, and green) were conditioned at several temperatures (-5[degrees], 5[degrees], 12[degrees], and 20[degrees]C) prior to fingerjointing. Two types of adhesives were used in this study: polymer emulsion polyurethane (PEP) and a new fast-curing formulation of phenol-resorcinol-formaldehyde (PRF). All specimens were tested in ...