PSI - Issue 44

A. Viskovic et al. / Procedia Structural Integrity 44 (2023) 1348–1355 A. Viskovic et al. / Structural Integrity Procedia 00 (2022) 000–000

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A second result concerns the swelling of brick and mortar. This parameter informs on the shear failure at the edges of the specimen. The swelling is reported in Fig. 5a-b for the brick and mortar respectively. In either case Dx and Dy show a quasi-linear increase. Morever, the two confined cases NC and DC show an identical response for Dx and Dy. The swelling of NC and DC is about is about one half of UC. The confinement has a very favourable impact on the load carrying capacity of the column whatever the considered case. The same considerations than the brick apply with an important exception. Now the cases UC and DC share the similar responses. The swelling of UC is of the same order than that the brick case. The swelling of DC is of the order of about one half than the brick case. For increasing D the UC and DC tends to diverge. The effectiveness of the hooping systems depends on the material properties. In the case of high performances materials (Dyneema) the load carrying capacity of the column is the same regardless materials. Instead, to the case of low performances materials (Nylon) the load carrying capacity depends on the used materials.

Fig. 5 a). Horizontal displacement brick vs imposed displacement. Fig. 5 b). Horizontal displacement mortar vs imposed displacement.

6. Conclusion The purpose of the work is to evaluate the effectiveness of an innovative method for masonry columns confinement. The novelty consists in the use of high performances, high compatible textiles materials in place of traditional materials (e.g. steel, frp, frcm, etc.) endowed with well known deficiencies in terms of strengthening and technological aspects. Experimental and numerical issues have been designed.