Determination of bending moment resistance of t-type joints constructed with wood biscuit

The goal of this study was to investigate effects of wood species (Beech and Fir)، number of connectors (1 and 2)، size of biscuit (10 and 20) and type of adhesives (Polyvinyl acetate (PVAc)، polyurethane (PU) and urea-formaldehyde (UF)) on bending moment resistance of joints fabricated with biscuit. Results have shown that member of joint، number of connector، size of biscuit and type of adhesive had significant effect on the bending moment resistance. Bending moment resistance of joints made of Beech wood were stronger than joints made of Fir ones. Bending moment resistance has increased، with the increase of size and number of biscuit. Performance of joints with PU adhesive had better than PVA and UF. Highest bending moment resistance were obtained from joints glued with PU adhesive، size of biscuit 20 and 2 connectors. The results also indicated that joints made with biscuit and glued with PU had higher resistance than wooden dowel joints.