PSI - Issue 74

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

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

ScienceDirect

Procedia Structural Integrity 74 (2025) 50–55

© 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 the responsibility of Libor Pantělejev This contribution focusses on the damage assessment of concrete fatigue failure with the whole range of fatigue regimes, i.e. static fracture, low-cycle to high-cycle with more than 1×10 4 loading cycles. The results of the experimental tests are presented in form of a S-N curve, a load-CMOD curve, a damage-CMOD curve and are providing useful information for future structural design. Additionally, acquisition of CMOD during the cyclic loading allowed for evaluation of the fatigue crack growth rate by Paris’ law. © 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 the responsibility of Libor Pantělejev Abstract Concrete structures form an essential part of the local and global infrastructure, and their lifespan is usually measured in decades. Many structures such as highway and railroad bridges, railway sleepers, offshore structures and wind turbine foundations are exposed to repeated load and often fail due to fatigue rupture of concrete. Furthermore, the fatigue design of a structure is considered for the ultimate limit state (ULS), while the serviceability limit state (SLS) is missing, i.e., the assessment of the crack width w c , crack length l , and deflection δ . This missing SLS fatigue consideration in standards may lead to an unoptimized structure, which may eventually result in a visible damage of load-bearing structural components. This contribution focusses on the damage assessment of concrete fatigue failure with the whole range of fatigue regimes, i.e. static fracture, low-cycle to high-cycle with more than 1×10 4 loading cycles. The results of the experimental tests are presented in form of a S-N curve, a load-CMOD curve, a damage-CMOD curve and are providing useful information for future structural design. Additionally, acquisition of CMOD during the cyclic loading allowed for evaluation of the fatigue crack growth rate by Paris’ law. © 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 the responsibility of Libor Pantělejev Eleventh International Conference on Materials Structure and Micromechanics of Fracture Assessment of concrete fracture and fatigue damage across multiple load regimes Petr Miarka a *, Lucie Malíková a , Jose D. Ríos c , Vlastimil Bílek d a Institute of Physics of Materials, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic b Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republ ic c Department of Continuum Mechanics and Structural Analysis, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Ca mino de los Descubrimientos s/n, 41092, Seville, Spain d VŠB — Technical University of Ostrava, Faculty of Civil Engineering, Ludvíka Podéště 1875/17, 708 00 Ostrava - Poruba, Czech Republic Abstract Concrete structures form an essential part of the local and global infrastructure, and their lifespan is usually measured in decades. Many structures such as highway and railroad bridges, railway sleepers, offshore structures and wind turbine foundations are exposed to repeated load and often fail due to fatigue rupture of concrete. Furthermore, the fatigue design of a structure is considered for the ultimate limit state (ULS), while the serviceability limit state (SLS) is missing, i.e., the assessment of the crack width w c , crack length l , and deflection δ . This missing SLS fatigue consideration in standards may lead to an unoptimized structure, which may eventually result in a visible damage of load-bearing structural components. Eleventh International Conference on Materials Structure and Micromechanics of Fracture Assessment of concrete fracture and fatigue damage across multiple load regimes Petr Miarka a *, Lucie Malíková a , Jose D. Ríos c , Vlastimil Bílek d a Institute of Physics of Materials, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic b Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republ ic c Department of Continuum Mechanics and Structural Analysis, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Ca mino de los Descubrimientos s/n, 41092, Seville, Spain d VŠB — Technical University of Ostrava, Faculty of Civil Engineering, Ludvíka Podéště 1875/17, 708 00 Ostrava - Poruba, Czech Republic

Keywords: Fatigue; Concrete; S-N field; Cycling loading Keywords: Fatigue; Concrete; S-N field; Cycling loading

* Corresponding author. Tel.: +4-205-322-90430. E -mail address: miarka@ipm.cz * Corresponding author. Tel.: +4-205-322-90430. E -mail address: miarka@ipm.cz

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC-BY 4.0 license (https://creativecommons.org/licenses/by/4.0) Peer-review under the responsibility of Libor Pant ě lejev 2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC-BY 4.0 license (https://creativecommons.org/licenses/by/4.0) Peer-review under the responsibility of Libor Pant ě lejev

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 the responsibility of Libor Pantělejev 10.1016/j.prostr.2025.10.033