PSI - Issue 73

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2025) 000–000 ScienceDirect Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2025) 000–000

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Procedia Structural Integrity 73 (2025) 112–118 23rd International Conference on Modelling in Mechanics 2025 Physical and Numerical Analysis of Corrosion Damage of Prestressing Tendons of the Collapsed Roof Structure Petr Mynarcik a , Miroslav Vacek a , David Mikolasek b , Vladislav Bures c a Centre of Building Experiments and Diagnostics, Faculty of Civil Engineering, VSB – Technical University of Ostrava, Ludvika Podeste 1875/17, Ostrava-Poruba, 708 00, Czech Republic b Department of Structures, Faculty of Civil Engineering, VSB – Technical University of Ostrava, Ludvika Podeste 1875/17, Ostrava-Poruba, 708 00, Czech Republic c Department of Structural Engineering, Faculty of Arts and Architecture, Technical University in Liberec, Studentska 1402/2, Liberec, 461 17, Czech Republic Abstract This conference paper presents the results of a physical and numerical analysis of the effect of corrosion damage on the material properties of prestressing tendons, which were taken from the wreckage of collapsed prestressed roof truss. The main objective of the described research was to evaluate the effect of the depth of corrosion damage on the material properties of prestressing tendons, which were formed by untwisted bundles of patented wires. Corrosion damage was artificially initiated on prestressing tendon samples in a corrosion chamber under the accelerating influence of temperature and salt spray. Test samples of prestressing tendons were stored in a corrosive environment for three exposure time intervals of 60, 100 and 140 days. Corrosion-damaged samples were subsequently subjected to precise spatial scanning with a 3D profilometer, to obtain spatial model of the corrosion-altered surface topography. Subsequently, tensile tests of corrosion-damaged samples and a reference set of samples without corrosion damage were carried out. The data were used to create numerical models of individual test samples and were verified with physical tensile strength tests, evaluated the possibilities of predicting the location of sample failure based on the 3D scan and the shape of corrosion defects, and last but not least, verified the actual weight loss of the material and the volume loss obtained from the 3D model. 23rd International Conference on Modelling in Mechanics 2025 Physical and Numerical Analysis of Corrosion Damage of Prestressing Tendons of the Collapsed Roof Structure Petr Mynarcik a , Miroslav Vacek a , David Mikolasek b , Vladislav Bures c a Centre of Building Experiments and Diagnostics, Faculty of Civil Engineering, VSB – Technical University of Ostrava, Ludvika Podeste 1875/17, Ostrava-Poruba, 708 00, Czech Republic b Department of Structures, Faculty of Civil Engineering, VSB – Technical University of Ostrava, Ludvika Podeste 1875/17, Ostrava-Poruba, 708 00, Czech Republic c Department of Structural Engineering, Faculty of Arts and Architecture, Technical University in Liberec, Studentska 1402/2, Liberec, 461 17, Czech Republic Abstract This conference paper presents the results of a physical and numerical analysis of the effect of corrosion damage on the material properties of prestressing tendons, which were taken from the wreckage of collapsed prestressed roof truss. The main objective of the described research was to evaluate the effect of the depth of corrosion damage on the material properties of prestressing tendons, which were formed by untwisted bundles of patented wires. Corrosion damage was artificially initiated on prestressing tendon samples in a corrosion chamber under the accelerating influence of temperature and salt spray. Test samples of prestressing tendons were stored in a corrosive environment for three exposure time intervals of 60, 100 and 140 days. Corrosion-damaged samples were subsequently subjected to precise spatial scanning with a 3D profilometer, to obtain spatial model of the corrosion-altered surface topography. Subsequently, tensile tests of corrosion-damaged samples and a reference set of samples without corrosion damage were carried out. The data were used to create numerical models of individual test samples and were verified with physical tensile strength tests, evaluated the possibilities of predicting the location of sample failure based on the 3D scan and the shape of corrosion defects, and last but not least, verified the actual weight loss of the material and the volume loss obtained from the 3D model. © 2025 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 event organizers 2452-3216 © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers 2452-3216 © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers Keywords: Type your keywords here, separated by semicolons ; © 2025 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 23rd International Conference on Modelling in Mechanics 2025 organizers Keywords: Type your keywords here, separated by semicolons ;

2452-3216 © 2025 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 event organizers 10.1016/j.prostr.2025.10.018