PSI - Issue 64

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2023) 000 – 000 Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com

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ScienceDirect

Procedia Structural Integrity 64 (2024) 2125–2132

SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Experimental correlations between crack opening and corrosion measurements in prestressed concrete beams Pascual Saura Gómez a , Julio Emilio Torres Martín b , Nuria Rebolledo Ramos b , Luana Araujo b , Servando Chinchón-Payá b , Javier Sánchez Montero b , Beatrice Belletti c *, Simone Ravasini c , Alice Sirico c a Departamento de Construcciones Arquitectónicas, Universidad de Alicante, 03690 San Vicente del Raspeig, Alicante, Spain b Instituto Eduardo Torroja de Ciencias de la Construcción (IETcc-CSIC), Calle de Serrano Galvache 4, 28033 Madrid, Spain. c Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/a, 43124 Parma, Italy Abstract The assessment of concrete structures suffering corrosion deterioration represents nowadays one of the most crucial topics for the engineering community, in order to avoid sudden failures resulting in human losses and high financial damages. Within this framework, monitoring through in-situ inspections the conditions of existing reinforced concrete (RC) and prestressed concrete (PC) structures can represent a key tool for planning repairing and strengthening interventions. In this work, 10-year-old prestressed concrete beams subjected to natural chloride attack due to wet and dry cycles of seawater, have been experimentally investigated to estimate corrosion. Along their length, different measurements, such as potential, resistivity, chlorides content and corrosion rate have been performed to highlight the longitudinal corrosion pattern. Then, also concrete cover losses and crack openings were detected, to try to find a correspondence between surface defects and corrosion measures and to improve the knowledge of corrosion phenomenon in PC beams, considering the spatial variability. © 2024 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 SMAR 2024 Organizers Keywords: natural corrosion; prestressed concrete beams; cracking; non-destructive measurements; inspections 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures a , Julio Emilio Torres Martín b b , Luana b b , Javier Sánchez Montero b , Beatrice Belletti c *, c , Alice Sirico c a Departamento de Construcciones Arquitectónicas, Universidad de Alicante, 03690 San Vicente del Raspeig, Alicante, Spain b Instituto Eduardo Torroja de Ciencias de la Construcción (IETcc-CSIC), Calle de Serrano Galvache 4, 28033 Madrid, Spain. c Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/a, 43124 Parma, Italy Abstract The assessment of concrete structures suffering corrosion deterioration represents nowadays one of the most crucial topics for the engineering community, in order to avoid sudden failures resulting in human losses and high financial damages. Within this framework, monitoring through in-situ inspections the conditions of existing reinforced concrete (RC) and prestressed concrete (PC) structures can represent a key tool for planning repairing and strengthening interventions. In this work, 10-year-old prestressed concrete beams subjected to natural chloride attack due to wet and dry cycles of seawater, have been experimentally investigated to estimate corrosion. Along their length, different measurements, such as potential, resistivity, chlorides content and corrosion rate have been performed to highlight the longitudinal corrosion pattern. Then, also concrete cover losses and crack openings were detected, to try to find a correspondence between surface defects and corrosion measures and to improve the knowledge of corrosion phenomenon in PC beams, considering the spatial variability. © 2024 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 SMAR 2024 Organizers Keywords: natural corrosion; prestressed concrete beams; cracking; non-destructive measurements; inspections © 2024 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 SMAR 2024 Organizers

* Corresponding author. Tel.: +390521905930 E-mail address: beatrice.belletti@unipr.it * Corresponding author. Tel.: +390521905930 E-mail address: beatrice.belletti@unipr.it

2452-3216 © 2024 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 SMAR 2024 Organizers 2452-3216 © 2024 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 SMAR 2024 Organizers

2452-3216 © 2024 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 SMAR 2024 Organizers 10.1016/j.prostr.2024.09.314