PSI - Issue 44

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 il l li t . i ir t. tr ct ral I te rit r ce ia ( )

www.elsevier.com/locate/procedia .else ier.c /l cate/ r ce ia

ScienceDirect

Procedia Structural Integrity 44 (2023) 1030–1037

© 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. Abstract The Italian existing building stock is characterized by low-performance levels in terms of energy efficiency and seismic safety. The development of retrofit solutions fulfilling both targets is therefore of strong interest, as proven by a series of fiscal incentives recently approved, in Italy, to encourage the implementation of both energy and seismic intervention. Nevertheless, energy and seismic retrofitting techniques often present specific features that make it difficult to pursue both objectives. In this framework, an innovative solution is proposed, focused on the enhancement of unreinforced masonry buildings using expanded-clay blocks infill walls. Expanded-clay block walls technique has proven to provide excellent energy performance and ensure high seismic safety in new buildings. This technique's feasibility and efficiency as a retrofit solution were analysed when applied to a representative case study building, analysed in the current condition and after the application of the retrofit system. Dynamic thermal simulations were carried out to evaluate the hygrothermal performance, showing a general decrease in the overall thermal transmittance and an improvement in the indoor thermal comfort for the retrofitted configuration. The seismic behaviour was assessed according to actual standards, showing an increased capacity of the building towards horizontal actions post-retrofit application. 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: Unreinforced masonry, retrofit system, shear walls, energy enhancement 1. Introduction Unreinforced masonry (URM) buildings represent one of the most widespread construction techniques all over the world. Masonry is an inhomogeneous, anisotropic and elastic material, that has proven to have good resistance against st t The Italian existing building stock is characterized by low-performance levels in terms of energy efficiency and seismic safety. l t f r tr fit s l ti s f lfilli t t r ts is t r f r f str i t r st, s r s ri s of fiscal i ti s r tl r , i It l , t r t i l t ti f t r s is i i t r ti . rt l ss, r s is i r tr fitti t i s ft r s t s ifi f t r s t t it iffi lt t rs t j ti s. I t is fr r , i ti s l ti is r s , f s t t f r i f r s r il i s si - l l s i fill lls. - l l lls t i s r t r i ll t r rf r s r i s is i s f t i il i s. is t i 's f si ilit ffi i s r tr fit s l ti r l s li t r r s t ti s - st il i , l s i t rr t iti ft r t li ti f t r tr fit s st . i t r l si l ti s r rri t t l t t r t r l rf r , s i r l r s i t r ll t r l tr s itt i r t i t i r t r l f rt f r t r tr fitt fi r ti . s is i i r s ss ss r i t t l st r s, s i i r s it f t il i t r s ri t l ti s st-r tr fit li ti . © 2022 The Authors. Published by ELSEVIER B.V. is is ss rti l under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review r r s si ilit f t s i tifi itt f t I I I f r , is i i ri i It l Keywords: Unreinforced masonry, retrofit system, shear walls, energy enhancement . t ti r i f r r ( ) il i r r t f t t i r tr ti t i ll r t l ti t ri l, t t r t r i t i t XIX ANIDIS Conference, Seismic Engineering in Italy An enhanced system for the combined seismic and energy retrofit of masonry buildings Silvia Caprili a , Federica Del Carlo a *, Giacomo Salvadori b a Department of Civil and Industrial Engineering, University of Pisa, Largo L. Lazzarino 1, 56122 Pisa, Italy b Department of Energy, Systems, Territory and Constructions, University of Pisa, Largo L. Lazzarino 1, 56122 Pisa, Italy , i i i i i l Silvia Caprili , Federica Del Carlo *, Giacomo Salvadori b a e rt e t f ivil I stri l i eeri , iversity f is , r . zz ri , is , It ly b e rt e t f er y, yste s, errit ry str cti s, iversity f is , r . zz ri , is , It ly rl . r i i , i tr i

* Corresponding author. Tel.: +39-00050-2218253. E-mail address: federica.delcarlo@phd.unipi.it rres i a t r. el.: - - . ress: fe erica. elcarl . i i.it - il

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 © 2022 The Authors. Published by ELS I . . is is ss rti l r t - - li s ( tt s:// r ti s. r /li s s/ - - / . ) er res si ilit f t e scie tific c ittee f t e I I I fere ce, eis ic i eeri i Ital eer-re ie

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.2023.01.133