Performance-Based Material Evaluation Methodology for FRP-Glulam Beams
Publication Name: Abstract in: Proceedings of Forest Product Society, 2001 Annual Meeting
A performance-based material evaluation methodology is reviewed as part of a broader project on the development of Þber-reinforcedpolymer (FRP) composite reinforced glued-laminated (glulam) members. The glueline interface was examined under test conditions that includedthe presence of moisture and temperature ßuctuations, and the effect of wood preservatives. The objectives of this study were: 1) to determine if thecurrent test methods used to assess durability of wood-wood bonds for exterior use (ANSI/AITC and ASTM D 2559 protocols) can be adopted fortesting FRP composite reinforcement of wood; 2) to research possible modiÞcations to the standard procedures when necessary to accommodatespeciÞcs of the adhesive bonds in hybrid FRP-wood assemblies; and 3) to propose a uniÞed interpretation approach for FRP-wood interface testresults focusing on development of acceptance criteria. Four commercially available FRP composite systems exhibiting exterior durability potentialfor glulam reinforcement were selected to validate the material qualiÞcation protocol. Two wood species were considered in this study: southernyellow pine and Douglas-Þr. The four FRP composite material systems represented a broad spectrum of Þber reinforcement, matrix, adhesives, andfabrication processes. Experimental studies using the composite systems were conducted to validate the proposed methodology.