Pine Beams Retrofitted with FRP and Poplar Planks: Mechanical Behavior
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AuthorRescalvo, Francisco J.; Abarkane, Chihab; Suárez, Elisabet; Valverde Palacios, Ignacio; Gallego Molina, Antolino
Poplar woodPine wood beamsCompositesMechanical behaviorFRP
Rescalvo, F. J., Abarkane, C., Suárez, E., Valverde-Palacios, I., & Gallego, A. (2019). Pine Beams Retrofitted with FRP and Poplar Planks: Mechanical Behavior. Materials, 12(19), 3081. [doi:10.3390/ma12193081]
SponsorshipThis work was made possible thanks to the financial support of the COMPOP_Timber project “Desarrollo de productos de ingeniería elaborados a base de tablones y chapas de chopo con inserciones de material compuesto para su uso en construcción”, BIA2017-82650-R.
The paper presents an experimental analysis of the bending behavior of pine beams (Pinus Sylvester) retrofitted with fiber reinforced plastic (FRP) and poplar planks used as external covering. Poplar wood was chosen because of its rapid growth in planted forests, its homogeneity and attributes for sustainable local development, and high CO2 absorption rate. Vibration tests were also conducted in order to evaluate the stiffness in a non-destructive way and compare it with that obtained by means of the destructive tests. Three types of reinforcement were compared, namely: basalt fabric (FB), carbon fabric (FC) and carbon laminate (LC). In addition, some pine beams were reinforced only with poplar planks and used as control specimens in order to evaluate the improvement provided by the FRP. It was observed that a strong delamination preceded the final breakage of beam. Moreover, the results indicated that stiffness is provided mainly by the poplar plank and not by the FRP, as was expected.