Despite good mechanical properties, beech wood still has much untapped potential in wood construction. It has a high density and is very strong, but at the same time biologically non-durable and dimensionally unstable. These undesirable properties can be reduced with thermal modification. This way we can use beech wood for purposes, for which its use was limited until now. After thermal modification, some mechanical properties of wood worsen and certain properties, impacting the quality of adhesive bonds, change. The purpose of the thesis was to find out, whether the adhesive bonds of the laminated wood from thermally modified beech wood will reach the demands of the standard SIST EN 14080:2013. We were also interested in the impact of the primer in gluing with PUR adhesives. In the manufacture of glulams, we have used the adhesives MUF, PUR, PUR in combination with the primer (PUR+P) and the EPI adhesive. Following the instructions of the manufacturers of adhesives we made three 4-layered glulams with each adhesive. We carried out a shear and delamination test according to the standard SIST EN 14080:2013. We found that all the adhesives have met the requirements for the shear strength of the adhesive bonds, the highest value was reached by specimens, glued with the adhesive PUR+P (fv avg = 14,9 N/mm2), but in all cases the shear strength and wood failure percentage was high. The delamination test was carried out according to the procedures A, B and C. In all the procedures, the requirements were met by the adhesives MUF and PUR+P. The delamination of the adhesive bonds in the case of samples, glued with the adhesives PUR and EPI, was too high in all procedures. We identified poor connections between the results of the shear and delamination test (R2 = 0,179-0,272). We confirmed that the application of the primer in gluing with PUR adhesives significantly increases the resistance to delamination and that the shear strength of these adhesive bonds is also higher.
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