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) 1108–1115

© 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 paper, retrofitting of masonry circular arches by means of Fibre-Reinforced Lime-Based Mortar (FRLBM) as additional internal layer is experimentally and numerically investigated. Reduced-scale yellow tuff arches are subjected to monotonic horizontal loading while subjected to constant vertical loads. The effect of FRLBM retrofitting is assessed and compared to the unreinforced arch response, and the enhancement provided by the increased ductility of mortar with respect to ordinary mortar is clearly shown. Numerical simulations are also developed and validated with the aim of better understanding the relationship between the characteristics of the retrofitting material and the overall increase in seismic capacity of the arch. © 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: Masonry arch; Tuff stone; Horizontal loading; Increased ductility; Seismic retrofitting r Abstract Masonry arches and vaults represent distinctive structural elements of historical masonry monuments. While in most cases they were conceived and empirically optimised to bear vertical loadings, e.g., in vaulted floors, arch bridges, or triumphal arches, in seismically active regions their response to horizontal loading may represent a significant fragility indicator, as testified by several collapses observed after recent earthquakes. Retrofitting of curved structures is thus crucial to preserve and enhance historical heritage, and as such, it must obey to the principles of compatibility with the ancient materials. XIX ANIDIS Conference, Seismic Engineering in Italy Seismic enhancement of masonry arches by means of fibre reinforced mortar Corrado Chisari a *, Francesco Masi b , Massimo Latour b , Gianvittorio Rizzano b , Gianfranco De Matteis a a Department of Architecture and Industrial Design, University of Campania “Luigi Vanvitelli”, via San Lorenzo, Aversa CE 81031 , Italy b Department of Civil Engineering, University of Salerno, via xxx, Italy a b b G b G

* Corresponding author. Tel.: +39-0815010823. E-mail address: corrado.chisari@unicampania.it

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.2023.01.143