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Bonding Performance of Glulam Reinforced with Glass Fiber-Reinforced Plastics  

Park, Jun-Chul (Department of Wood Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University)
Shin, Yoon-Jong (Shinsung basic materials)
Hong, Soon-Il (Department of Wood Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.37, no.4, 2009 , pp. 357-363 More about this Journal
Abstract
This study was carried out to investigate whether adhesive used in manufacturing glulam can be used to bond wood and GFRP, when considering working process and economical efficiency. The six different glulams were manufactured, changing the adhesives and the mixing ratios of the adhesives, and investigated by the block shear test and the delamination of the water soaking or boiling water soaking. The three glulams were manufactured, using the resocinol resin based adhesive, the PVAc resin based adhesive and the epoxy resin adhesive, and the other three glulams, using the adhesives mixing resocinol resin and PVAc resin. The block shear strength is higher than $7.1N/mm^2$ in all types, which is standard of KS F3021. However, in the wood failure the block shear strength was the highest as 65.9% in the PVAc. The delamination of glulams glued with PVAc adhesive, which was 1.08% in water soaking and 4.16% in boiling water soaking, was lower than 5.00% which is the standard of KS F 3021, and the adhesive strength is good. In glulams glued with only resocinol resin adhesive, the wood layers were good as 1.26% in the water soaking delamination and 0.00% in the boiling water soaking delamination. The GFRP layers were not good as 21.85% in the water soaking delamination but were good as 1.45% in the boiling water soaking delamination.
Keywords
GFRP; reinforced glulam; water soaking delamination; boiling water soaking delamination;
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