PSI - Issue 44

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

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Procedia Structural Integrity 44 (2023) 2214–2221

© 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. © 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 mortars (CRM); Fabric reinforced cementitious matrices (FRCM); Jacketing; Quasi-static cyclic shear compression tests; Stone masonry retrofit. Abstract This paper discusses the results of a experimental campaign on Composite-Reinforce Mortar (CRM) and Fabric-Reinforced Cementitious Matrix (FRCM) jacketing for the retrofit of stone masonry structures. Two dou le-l af natural stone masonry piers were built with the same materials and geometry, including portions of adjoining spandrels above and below. Then CRM was applied to both faces of one of the specimens, using a natural hydraulic-lime mortar, glass-fiber-reinforce polymer eshes, and helicoidal steel connectors. The other pier, instead, was retrofitted with FRCM on both sides, combining a glass-fiber-reinforced cem ntitious mortar, bidirectional PBO textiles, and PBO connectors. Bot specimens were subjected to the same vertic l overburden load and to a quasi-static cyclic shear-compression test in double-curvature conditions, up to failure conditions. Different collapse mechanisms were triggered by the two retrofit systems, with flexure dominating the CRM specimen and shear controlling the FRCM one. The displacement capacity was enhanced by factors of about 2.5 in flexure and 3.0 in shear, compared to typical values for unstrengthened piers. © 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 mortars (CRM); Fabric reinforced cementitious matrices (FRCM); Jacketing; Quasi-static cyclic shear compression tests; Stone masonry retrofit. XIX ANIDIS Conference, Seismic Engineering in Italy Cyclic shear-compression tests on two stone masonry piers strengthened with CRM and FRCM Gabriele Guerrini a,b, *, Andrea Bruggi c , Santi Urso c , Marco Quaini c , Andrea Penna a,b a Department of Civil Engineering and Architecture (DICAr), University of Pavia, Via Ferrata 3, 27100 Pavia, Italy b European Centre for Training and Research in Earthquake Engineering (EUCENTRE Foundation), Via Ferrata 1, 27100 Pavia, Italy c Laterlite S.p.A., Via Correggio 3, 20149 Milano, Italy Abstract This paper discusses the results of an experimental campaign on Composite-Reinforced Mortar (CRM) and Fabric-Reinforced Cementitious Matrix (FRCM) jacketing for the retrofit of stone masonry structures. Two double-leaf natural stone masonry piers were built with the same materials and geometry, including portions of adjoining spandrels above and below. Then CRM was applied to both faces of one of the specimens, using a natural hydraulic-lime mortar, glass-fiber-reinforced polymer meshes, and helicoidal steel connectors. The other pier, instead, was retrofitted with FRCM on both sides, combining a glass-fiber-reinforced cementitious mortar, bidirectional PBO textiles, and PBO connectors. Both specimens were subjected to the same vertical overburden load and to a quasi-static cyclic shear-compression test in double-curvature conditions, up to failure conditions. Different collapse mechanisms were triggered by the two retrofit systems, with flexure dominating the CRM specimen and shear controlling the FRCM one. The displacement capacity was enhanced by factors of about 2.5 in flexure and 3.0 in shear, compared to typical values for unstrengthened piers. XIX ANIDIS Conference, Seismic Engineering in Italy Cyclic shear-compr ssion tests on two stone masonry piers strengthened with CRM and FRCM Gabriele Guerrini a,b, *, Andrea Bruggi c , Santi Urso c , Marco Quaini c , Andrea Penna a,b a Department of Civil Engineering and Architecture (DICAr), University of Pavia, Via Ferrata 3, 27100 Pavia, Italy b European Centre for Training and Research in Earthquake Engineering (EUCENTRE Foundation), Via Ferrata 1, 27100 Pavia, Italy c Laterlite S.p.A., Via Correggio 3, 20149 Milano, Italy

* Corresponding author. Tel.: +39 0382 98 5452 E-mail address: gabriele.guerrini@unipv.it * Corresponding author. Tel.: +39 0382 98 5452 E-mail address: gabriele.guerrini@unipv.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 © 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.2023.01.283