Seismic Behavior of Brick Masonry Walls Strengthened with Different Types of Fiber Nets

To investigate the strengthening effect of fiber nets on the seismic behavior of brick masonry walls, carbon fiber nets (CFN), glass fiber nets (GFN) and basalt fiber nets (BFN) were applied to strengthen masonry walls with an external sticking method. Pseudo-static tests were carried out on eight walls with different strengthening conditions: one was not strengthened; six were strengthened on one side or both sides with CFN, GFN and BFN, respectively; and one was strengthened with CFN on both sides and then riveted with steel plates. The results showed that fiber nets could exchange the failure mode of the walls from shear failure to bending failure. The bearing capacity, energy consumption and ductility of the strengthened walls were improved, and the improvement of double-sided reinforcement was more notable. Epoxy polymer mortar is more suitable for masonry structure strengthened with fiber nets than acrylic polymer mortar because it can ensure the full participation of fiber nets. In addition, a calculation formula for the design value of seismic shear capacity of masonry walls strengthened with fiber nets was deduced, which can effectively predict the shear capacity of walls strengthened with fiber nets.