Glueline bonding performance of decommissioned CCA-treated wood. Part I: Without retreatment

Recently, public awareness of health risks associated with heavy metals in the environment has increased. Consequently, there has been increased concern regarding traditional methods of disposal of chromated copper arsenate (CCA) treated wood, such as landfilling and incineration. Reuse and recyclin...

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Bibliographic Details
Published in:Forest products journal 2009-07, Vol.59 (7-8), p.36-42
Main Authors: Piao, Cheng, Monlezun, Charles J, Shupe, Todd F
Format: Article
Language:English
Subjects:
adhesion
adhesive bonding
Adhesives
Arsenic
Bond strength
bonding strength
Chemicals
chromated copper arsenate
delamination
density
Forest products industry
gluability
Health risk assessment
Health risks
heartwood
incising
Landfill
Mechanical properties
Perceptions
Pinus
preservative retention
Preservatives
priming
Recycling
Resins
Retention
sapwood
Shear strength
Studies
surfaces
utility poles
waterborne preservatives
wood bonding
wood preservatives
wood processing
Wood products
wood treatment
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Summary:Recently, public awareness of health risks associated with heavy metals in the environment has increased. Consequently, there has been increased concern regarding traditional methods of disposal of chromated copper arsenate (CCA) treated wood, such as landfilling and incineration. Reuse and recycling of decommissioned treated wood could be an environmental and potentially economical solution to the critical problem of disposal of treated wood. This study investigated the gluability of CCA-treated utility pole wood plies cut from decommissioned southern pine (Pinus spp.) utility poles. Two surface treatment methods (priming and incising) were evaluated for their efficacy in improving the bonding performance of decommissioned utility pole wood and untreated virgin wood. Effects of CCA retention and distribution on glueline shear strength and delamination were investigated. Results showed that CCA reduced glueline shear strength. Incising had a marginally positive effect on glueline shear strength and delamination. Unevenly distributed CCA in decommissioned utility pole wood may present a recycling challenge for laminated members. Some decommissioned CCA-treated poles might not be suitable for the production of laminated members due to potentially high delamination which could hinder performance in exterior applications. [PUBLICATION ABSTRACT]
ISSN:0015-7473
2376-9637