PSI - Issue 44

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 44 (2023) 2262–2269

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. In this work, an experimental campaign was carried out to evaluate the CRM effect on the seismic response of brick masonry walls. First, mechanical characterization of reinforcement components was carried out, through tensile tests on bare yarns, clamping grid tests on reinforced mortar coupons, and single-lap shear bond tests. Subsequently, quasi-static cyclic shear-compression tests on three walls with dimensions of 1000x250x1225 mm were carried out. Amongst tested walls, one was maintained unreinforced, one was reinforced by the application of a CRM system on two sides, and the last was reinforced by the application of CRM on one side only. The paper presents the main results of the experimental campaign, showing the effectiveness of CRM for the in-plane shear behavior of brick masonry walls. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: Composite Reinforced Mortar; Brick masonry walls; Shear-compression test 1. Introduction Italy is a territory characterized by a high seismic risk. In recent years reinforcement systems based on the use of fiber-reinforced composite materials, such as Fiber Reinforced Polymers (FRP), Fabric Reinforced Cementitious Matrix (FRCM) and Composite Reinforced Mortar (CRM) have been developed. Research works on CRM systems available in the literature have been mainly focused on demonstrating their efficiency to increase the in-plane shear strength of masonry walls and on validating or proposing analytical XIX ANIDIS Conference, Seismic Engineering in Italy Cyclic shear-compression tests on CRM reinforced brick masonry walls Carlo Vienni a , Luca Salvatori a , Maurizio Orlando a a Department of Civil and Enviromental Engineering (DICEA), University of Florence, Via di Santa Marta, 50100 Florence, Italy Abstract In recent years, Composite Reinforced Mortar (CRM) systems were applied as externally bonded reinforcement of existing masonry walls. In the research field, experimental tests have been carried out using diagonal-compression configurations, showing improvements in ultimate load and deformations capacities of panels. The experimental test of reference to define the lateral response of masonry walls is the shear-compression test: few studies were carried out using this setup, therefore limited analysis is still available about the efficiency of the reinforcement in terms of displacement capacity, stiffness, and hysteretic behavior.

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. 10.1016/j.prostr.2023.01.289