PSI - Issue 64

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

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 64 (2024) 175–182

SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Long-term Corrosion Monitoring for Evaluating the Performance of Repair Measures Fritz Binder a, *, Stefan L. Burtscher b SMAR 2024 – 7th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures Long-term Corrosion Monitoring for Evaluating the Performance of Repair Measures Fritz Binder a, *, Stefan L. Burtscher b Abstract For a highway operator, such as ASFiNAG, bridges are very important assets. Despite all regular maintenance measures, these structures are strongly subjected to aging and degradation because of their exposure. Chloride contamination poses a significant challenge, gradually reducing the durability and service life of these structures, necessitating repair measures. This paper focuses on the comprehensive analysis of data collected through on-site monitoring and nearby weather stations. Bridge components that were exposed to high chloride levels were rehabilitated with different systems and monitored for more than a decade. In the paper, the rehabilitation methods, sensor principles, and initial corrosion data are presented. Seasonal corrosion trends revealed interdependencies and offered insights into repair effectiveness and durability. This study provides insights into cost-effective and prospective maintenance strategies based on key indicators such as humidity, electrical resistivity, and corrosion potential. It assesses the condition of structures rehabilitated by hydrophobic treatment and coating using long-term monitoring data from an overpass. This offers valuable insights into the effectiveness of repair measures. Continuous monitoring allows for ongoing evaluation of degradation and maintenance efficiency, guiding decisions on future maintenance intervals. This research serves as an assessment of maintenance effectiveness, ultimately contributing to cost savings, extended lifespan, and reduced lane closure time of critical road infrastructure. © 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: Bridge maintenance; Chloride contamination; Corrosion monitoring; Repair effectiveness; Long-term durability Abstract For a highway operator, such as ASFiNAG, bridges are very important assets. Despite all regular maintenance measures, these structures are strongly subjected to aging and degradation because of their exposure. Chloride contamination poses a significant challenge, gradually reducing the durability and service life of these structures, necessitating repair measures. This paper focuses on the comprehensive analysis of data collected through on-site monitoring and nearby weather stations. Bridge components that were exposed to high chloride levels were rehabilitated with different systems and monitored for more than a decade. In the paper, the rehabilitation methods, sensor principles, and initial corrosion data are presented. Seasonal corrosion trends revealed interdependencies and offered insights into repair effectiveness and durability. This study provides insights into cost-effective and prospective maintenance strategies based on key indicators such as humidity, electrical resistivity, and corrosion potential. It assesses the condition of structures rehabilitated by hydrophobic treatment and coating using long-term monitoring data from an overpass. This offers valuable insights into the effectiveness of repair measures. Continuous monitoring allows for ongoing evaluation of degradation and maintenance efficiency, guiding decisions on future maintenance intervals. This research serves as an assessment of maintenance effectiveness, ultimately contributing to cost savings, extended lifespan, and reduced lane closure time of critical road infrastructure. © 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: Bridge maintenance; Chloride contamination; Corrosion monitoring; Repair effectiveness; Long-term durability © 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 a ASFiNAG Baumanagement GmbH, Schnirchgasse 17, 1030 Wien, Austria b Rocket NG GmbH, Stockerauerstraße 11-13/2, 2100 Korneuburg, Austria a ASFiNAG Baumanagement GmbH, Schnirchgasse 17, 1030 Wien, Austria b Rocket NG GmbH, Stockerauerstraße 11-13/2, 2100 Korneuburg, Austria

* Corresponding author. Tel.: +43664 60108 17426 E-mail address: fritz.binder@asfinag.at * Corresponding author. Tel.: +43664 60108 17426 E-mail address: fritz.binder@asfinag.at

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

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