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Assessment of fatigue resistance of concrete: S-N curves to the Paris? law curves
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SYSNO ASEP 0558428 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Assessment of fatigue resistance of concrete: S-N curves to the Paris? law curves Author(s) Miarka, Petr (UFM-A) ORCID
Seitl, Stanislav (UFM-A) RID, ORCID
Bílek, V. (CZ)
Cifuentes, H. (ES)Number of authors 4 Article number 127811 Source Title Construction and Building Materials. - : Elsevier - ISSN 0950-0618
Roč. 341, JUL (2022)Number of pages 18 s. Language eng - English Country GB - United Kingdom Keywords fracture process zone ; fatigue ; self-compacting concrete ; crack-growth ; loading frequency ; performance ; Wohler curve ; Paris? law ; hpc ; hsc ; aac Subject RIV JN - Civil Engineering OECD category Civil engineering R&D Projects GA21-08772S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000806356700003 EID SCOPUS 85131216080 DOI 10.1016/j.conbuildmat.2022.127811 Annotation Fatigue behaviour of concrete materials is often investigated on un-notched specimens under the compressive or bending loads. In this experimental study, a notched three-point bending (TPB) specimen is used in high-cycle fatigue experiments to obtain the Wohler's curve. Based on this approach, a novel, yet relatively simple transition from the traditional Wohler's curve to the Paris' law curve is proposed. Such a methodology allows one to obtain the Paris' law material constants, which are used to determine the fatigue failure of the structure or a component. The constants of the experimentally determined material, measured in four different concrete mixtures, have been verified by recalculating the number of cycles until the fatigue failure Nf by the integration of the Paris' law equation. The back-calculated number of cycles and the approximation of the S-N curve allowed for a comparison with the experimental data. Furthermore, the initial notch tip was extended in this approximation by the value of the critical distance. Such an extension allowed us to cover a wide range of the experimental data and provided a better prediction of fatigue life. The proposed method was verified on all four studied materials and showed satisfactory results. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2023 Electronic address https://www.sciencedirect.com/science/article/pii/S0950061822014842?via%3Dihub
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