Bending strength analysis of laminated beams from pine pallet wood waste with mahogany reinforcement.

Pinewood is often used for pallet production or packaging and ended up as waste. Therefore, this study aimed to determine the effect of Mahogany wood reinforcement on the flexural strength of laminated beams and reduce the waste of pinewood pallets to be used as structural and non-structural materials. Glue-laminated timber was used to engineer intact wood by utilizing waste pine pallets and mahogany reinforcement. Water content, density, and flexural strength tests were conducted based on SNI 03-3959-1995 with a concentrated load in the middle of a span measuring 76x5x5 cm3. The four variations with four samples each were A0 (S-S-S-S-S), 1 cm thick for each layer, A1 (I-S-I), 1.67 cm thick, A2 (S-I-S-I), 1.25 cm thick, and A3 (I-S-I-S-I), 1 cm thick. The length of the mahogany layer of 1 cm constitutes 66.67% of the total thickness of laminate beams, the layer of 1.25 cm constitutes 60%, while the layer of 1.67 cm constitutes 60%. The glue used is 40 MDGL PVAc (polyvinyl acetate) glue. The results showed that mahogany reinforcement affects laminated beams' flexural strength from waste pinewood pallets. The average MoE values of laminated beams A0, A1, A2, A3, were 4739.163 MPa, 6236.593 MPa, 4810.598 MPa, 4828.639 MPa, respectively. Additionally, the average value of the MoR of laminated beams A0, A1, A2, A3 was 35.935 MPa, 48.913 MPa, 36.374 MPa, and 37.099 MPa, respectively. [ABSTRACT FROM AUTHOR]