PSI - Issue 63

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ScienceDirect

Procedia Structural Integrity 63 (2024) 21–26

Keywords: Concrete; chloride ions; diffusion; maturation. 1. Introduction The objective of this research is to perform a comparative analysis of analytical and numerical models that simulate chloride ion penetration in concrete, taking into account the effects of delayed chloride exposure. This investigation focuses on evaluating the effectiveness of two analytical tools for modeling chloride ingress in scenarios where exposure begins after an initial delay. The performance of these analytical models will be benchmarked against results from a reference finite element method (FEM) model (Kone č ný et al., 2019). The ultimate goal of this study is to establish a reliable modeling framework that can accurately predict chloride penetration, serving as a preparatory step for a comprehensive experimental campaign. The subsequent phase of this research will involve validating modeled values with empirical data obtained from controlled laboratory experiments, thereby enhancing predictive accuracy and robustness of the proposed models. This work aims to contribute to the field by improving our understanding of Abstract This study presents the implementation of advanced analytical models designed to account for delayed exposure to chlorides in reinforced concrete structures. These models incorporate the effects of aging, which are known to reduce the rate of chloride ingress over time. The analytical models aim to provide faster predictions of the durability and service life of concrete structures subjected to chloride penetration comparing to finite element based models. To validate the accuracy and reliability of these models, preliminary results have been obtained and compared with those from a reference finite element-based model. The comparative analysis highlights the strengths and limitations of the analytical models, offering insights into their potential application in real world scenarios. This research contributes to the field of structural engineering by enhancing predictive capabilities for infrastructure exposed to chloride-induced corrosion. © 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 22nd International Conference on Modelling in Mechanics 2024 organizers 22nd International Conference on Modelling in Mechanics 2024 Numerical Study of the Effect of Maturation and Extended Chloride Deposition on Chloride Ingress Petr Kone č ný a,* , Petr Lehner a , Marie Hor ň áková a a Department of Structural Mechanics, Faculty of Civil Engineering, VSB - Technical University of Ostrava, Ludvíka Podéšt ě 1875/17, Ostrava-Poruba 708 00, Czech Republic

* Corresponding author. Tel.: +420 597 321 384. E-mail address: petr.konecny@vsb.cz

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 22nd International Conference on Modelling in Mechanics 2024 organizers 10.1016/j.prostr.2024.09.004