Strength and deformability of wooden structures reinforced with waste band saw blades

In Russia, the volume of sawn products produced by cutting large-sized logs on band saws is increasingly expanding. The blades of band saws work from 20 to 500 hours and the technology of their secondary use is currently not provided. The creation of an effective method of reinforcing wooden structures with spent band saw blades will increase their load-bearing capacity, rigidity and operational reliability. It is assumed that in terms of the combination of strength indicators and manufacturability, the new reinforced wooden structures will correspond to existing analogues, and in terms of economic indicators they will surpass them. The conceptual novelty consists in the secondary use of man-made waste from woodworking industries in the construction of buildings and structures, which for the first time will allow to justify the effectiveness of the method of reinforcing wooden structures with treated band saw blades at a high theoretical level. The article examines beams made of solid wood with a length of 6 meters with a cross section of 100 × 200 mm, bending tests are performed. Numerical simulation of the plane stress state by the finite element method is performed. The load-bearing capacity of a beam reinforced with spent band saw blades increased by 1.5 times in comparison with an unreinforced beam.

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