Investigation of the Tensile Strength of Perpendicular to the Fibers of Wooden Materials Reinforced with FRP and Joined with Wooden Dowels

Tensile strength is the resistance of the wood material to two forces applied in opposite directions and trying to break and separate the fibers. This study was carried out to determine the tensile strength perpendicular to the fibers of beech lumber reinforced with basalt fiber reinforced polymer (BFRP), glass fiber reinforced polymer and plaster mesh (PSM) and joined with beech dowel (BD), oak dowel (OD) and black pine dowel (BPD). Beech (Fagus orientalis Lipsky), Black pine (Pinus nigra Arnold) and oak (Quercus petraea Lieble) wooden were used as wooden dowels. Polyurethane (PUR-D4) wase used as the adhesive. The BFRP, GFRP, and PSM were added as one layer of reinforced materials. The experimental reinforced with BFRP, GFRP, and PSM were tested in the four different locations unreinforced, reinforced lumber with BFRP, GFRP, and PSM. Tests were performed on the experimental samples to investigate the tensile strength perpendicular to fiber (┴σt). The test results showed that the reinforcement process increased the (┴σ). The ┴σt value of samples reinforced with BFRP was 11%, 53%, and 66% higher than reinforced with GFRP, unreinforced, and reinforced PSM, respectively. The ┴σt value of samples joined with oak dowel was 7%, 14%, and 23% higher than those reinforced with beech, black pine, and control, respectively. Accordingly, the BFRP and oak dowel (OD) have been the potential to serve as options for reinforced wood structural.