In order to determine changes of strength characteristics in glued laminated timber a research was made with flat and edge glued specimens and by changing their length. Pine timber specimens of primary sizes 2000 x 50 x 30 mm and 2000 x 50 x 40 mm were tested. Edge glued specimen beam modulus of elasticity (MOE) increases, while the flat glued specimens MOE and general MOE of all beams decreases comparing with separate elements MOE. Results, gained from beams of flat, edge glued timber and from beam length changes, show the decrease of MOE when density is increasing. Nevertheless general MOE of all tested glued laminated beams increases with increase of density. However, due to limited amount of specimens and the initial testing character, it is not possible to make exact conclusions; therefore, it is necessary to perform research that is more exhaustive.
Keywords: glued laminated timber, non-destructive methods, strength, stiffness
Authors
Mišeikyte S.
Department of Mechanical Wood Technology , Kaunas University of Technology, Kaunas, Lithuania
Baltrušaitis A.
Department of Mechanical Wood Technology, Kaunas University of Technology, Kaunas, Lithuania
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