PSI - Issue 84

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ScienceDirect

Procedia Structural Integrity 84 (2026) 127–134

© 2026 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 Conference Keywords: Type your keywords here, separated by semicolons ; Abstract This paper presents a probabilistic approach for updating the structural reliability of reinforced concrete structures using chloride concentration measurements. Beyond well-known approaches, the proposed method accounts for uncertainties in both the chloride ingress model and measurements. It preserves temporal consistency by updating depth-specific chloride concentrations and time specific diffusion coefficients. A case study demonstrates how chloride measurements influence reliability, showing that higher concentrations may have a limited impact on overall structural reliability. The approach serves as a step toward more systematic integrity management of reinforced concrete infrastructure. 1. Introduction The ingress of chlorides into reinforced concrete compromises the long-term durability and safety of concrete infrastructure. To assess and manage the structural integrity of such systems, chloride ingress modelling and measurements are commonly employed to inform maintenance decisions, such as the application of surface sealants or other protective measures. However, while this approach is widely used, current procedures rarely include an explicit quantification of structural reliability over time to support and justify these maintenance actions. III Fabre Conference: Existing Bridges, Viaducts, and Tunnels: Research, Innovation, and Applications Reinforced Concrete Structural Reliability Adaptation with Chloride Ingress Measurements Simone Celati a *, Ivar Björnsson b , Sebastian Thöns b a Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy b Division of Structural Engineering, Lund University, John Ericssons väg 1, Lund 22363, Sweden

* Corresponding author. E-mail address: simone.celati@phd.unipi.it

2452-3216 © 2026 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 Conference 10.1016/j.prostr.2026.06.018