Abstract
The article presents results of an experimental studies on reinforcement of pine beams made from glued laminated timber with subsurface basalt fibers (BFRP). An experimental research program was presented, in which the bending strength of glued laminated timber of middle and lower quality class was increased after using BFRP basalt fabrics. Thanks to the use of BFRP reinforcement, an average load capacity increased by 47% and stiffness by 6% in comparison to non-reinforced elements. Based on the research, it was found that the use of BFRP basalt fabrics is an effective method for strengthening damaged wooden elements. Thus, it is an environmentally friendly method of improving the static work of structural elements by combining wood with other natural materials such as basalt fiber reinforced polymers.
Highlights
In recent years, FRP materials have been innovative raw materials used in the reinforcement of construction timber [1,2]
It should be remembered that the reinforcement of wooden structural elements with a product made of natural material is a method recommended for environmental protection
In the case of beams reinforced with BFRP fabrics, the reinforcement fibers broke
Summary
FRP materials have been innovative raw materials used in the reinforcement of construction timber [1,2]. The research [3] found that the use of epoxy adhesives is an Agnieszka WDOWIAK-POSTULAK, Grzegorz ŚWIT effective method of stress transfer between FRP materials and wood. This conclusion was made on the basis of the elimination of stress concentrations during bonding, which may be encountered, for example, when using components such as nails, screws or plugs. It was found that the samples reinforced with GFRP bars showed increased bending strength. Spaun [16] determined the increase in the tensile strength of bending beams reinforced with glass fibers.
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