Mechanical and dynamic properties of TRM with different fibers

• Bru, David ^[1] ; Torres, Benjamín ^[1] ; Baeza, F. Javier ^[1] ; Ivorra, Salvador ^[1]
  1. [1] Universitat d'Alacant

     Universitat d'Alacant

     Alicante, España

     
• Localización: CMMoST 2019: 5th International Conference on Mechanical Models in Structural Engineering / coord. por F. Javier Baeza de los Santos, Yordhana Gómez Sánchez, 2019, ISBN 978-84-17924-58-4, págs. 449-459
• Idioma: español
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• Resumen

  • To perform the structural analysis of masonry walls reinforced with composite materials based in textile fiber reinforced mortars (TRM) it is necessary to know the mechanical characteristics of TRM materials. This work presents the experimental campaign developed on mortar plates reinforced with of glass and carbon fiber meshes. Several 4x4x16 mm mortar specimens has been tested under compression and bending forces to obtain the maximum capacity in tension and in compression. The technique has been validated with the simultaneous application of the ultrasound technique to evaluate evolution with the maturation, both of the modulus of elasticity and the Poisson's coefficient. Finally, TRM plates of 400x100x10 mm have been manufactured. These plates have been tested using an Erudite MkIV electronic resonant frequency test system to determine the transverse resonant frequency and, through them, the dynamic modulus of elasticity and the damping factor of the TRM material. This analysis has been carried out at different ages. Finally, the stress-strain curves have been evaluated after 56 days. A combination of different reinforcements with fiberglass and carbon has been tested. With these results, it has been possible to evaluate the maximum capacity in tension and in compression of this material as well the modulus of elasticity and damping factor. These values are necessary to define any type of reinforcement in masonry walls.