PSI - Issue 44

Carlo Vienni et al. / Procedia Structural Integrity 44 (2023) 2270–2277 Vienni et al. / Structural Integrity Procedia 00 (2022) 000–000

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5. Conclusions An experimental test campaign was carried out to define the mechanical parameters of CRM components. Experimental tests showed that the weakest failure mechanism in CRM reinforced masonry is related to the detachment at the masonry-to-mortar interface. Several numerical analyses were carried out under shear-compression loading, after calibrating the model, to study the CRM effect on the seismic behavior of masonry walls. The authors have proposed new analytical formulations able to predict stiffness and strength equivalent parameters to be applied to CRM reinforced panels to simulate the effect of the reinforcement system on their shear-compression behavior. In addition, a new analytical formulation was proposed also to define the amplification factor of the displacement capacity to be applied to URM ultimate drift. Proposed formulations are valid for panels reinforced on both sides. Further analyses are necessary to calibrate the equations considering plaster on one side only. Acknowledgments The experimental test campaign has been carried out using the CRM system developed by the society Ruregold. The authors gratefully acknowledge Ing. Marco Quaini, Ing. Santi Urso and Ing. Maksym Barlit for providing materials for the reinforcement system. The authors also thank the useful help provided by the technicians Enzo Barlacchi and Andrea Giachetti of the Testing Laboratory of the Department of Civil and Environmental Engineering CEB-FIP. (1990). Model Code 90 (p. 462). CSLLPP. (2018). CNR DT 215/2018 . D’Antino, T., Calabrese, A. S., & Poggi, C. (2020). Experimental procedures for the mechanical characterization of composite reinforced mortar (CRM) systems for retrofitting of masonry structures. Materials and Structures/Materiaux et Constructions , 53 (4), 1–18. D’Antino, T., Carozzi, F. G., & Poggi, C. (2019). Diagonal shear behavior of historic walls strengthened with composite reinforced mortar (CRM). Materials and Structures/Materiaux et Constructions , 52 (6), 1–15. https://doi.org/10.1617/s11527-019-1414-1 Del Zoppo, M., Di Ludovico, M., Balsamo, A., & Prota, A. (2019). In-plane shear capacity of tuff masonry walls with traditional and innovative Composite Reinforced Mortars (CRM). Construction and Building Materials , 210 , 289–300. Donnini, J., Maracchini, G., Lenci, S., Corinaldesi, V., & Quagliarini, E. (2021). TRM reinforced tuff and fired clay brick masonry: Experimental and analytical investigation on their in-plane and out-of-plane behavior. Construction and Building Materials , 272 , 121643. Gattesco, N., Amadio, C., Barelli, S., Bedon, C., Rinaldin, G., & Zorzini, F. (2013). Analisi ciclica di pareti murarie in pietrame rinforzate mediante intonaco armato con rete in GFRP. 15 Convegno Nazionale “L’ingegneria Sismica in Italia”, 30 Giugno-4 Luglio, Padova . Gattesco, N., & Boem, I. (2015). Experimental and analytical study to evaluate the effectiveness of an in-plane reinforcement for masonry walls using GFRP meshes. Construction and Building Materials , 88 , 94–104. https://doi.org/10.1016/j.conbuildmat.2015.04.014 Grande, E., Milani, G., & Sacco, E. (2008). Modelling and analysis of FRP-strengthened masonry panels. Engineering Structures , 30 (7). Kouris, L. A. S., & Triantafillou, T. C. (2018). State-of-the-art on strengthening of masonry structures with textile reinforced mortar (TRM). In Construction and Building Materials (Vol. 188, pp. 1221–1233). Elsevier Ltd. https://doi.org/10.1016/j.conbuildmat.2018.08.039 Orlando, M., Salvatori, L., Spinelli, P., & De Stefano, M. (2016). Displacement capacity of masonry piers: parametric numerical analyses versus international building codes. Bulletin of Earthquake Engineering , 14 (8), 2259–2271. https://doi.org/10.1007/s10518-016-9903-x TNO DIANA, Diana User's Manual , Delft. Vanin, F., Zaganelli, D., Penna, A., & Beyer, K. (2017). Estimates for the stiffness, strength and drift capacity of stone masonry walls based on 123 quasi-static cyclic tests reported in the literature. Bulletin of Earthquake Engineering , 15 (12), 5435–5479. of Florence. References