Experimental and theoretical analysis of cracking and tension stiffening in UHPFRC under high-cycle fatigue

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dc.contributor.authorSepulveda, B.D.G.
dc.contributor.authorVisintin, P.
dc.contributor.authorSturm, A.B.
dc.contributor.authorOehlers, D.J.
dc.date.issued2024
dc.descriptionFirst published: 17 July 2023
dc.description.abstractTension-stiffening controls the serviceability behavior of concrete structures as it is responsible for crack formation and, consequently, the deflection of beams. In fiber reinforced concrete, such as ultra-high performance fiber reinforced concrete (UHPFRC), fibers bridge cracks and thereby transfer tensile stresses across the cracked region, allowing for tensile stresses to be carried by the concrete within the cracked region. Due to structures being designed for longer design lives, the consideration of long-term effects such as fatigue is required. Much research has examined tension-stiffening under fatigue when subjected to low cyclic loading, but very little has considered the effects of high-cycle fatigue, especially for UHPFRC. This paper presents the results of nine UHPFRC tension-stiffening tests under high-cycle fatigue in which the crack formation and development under varying cyclic ranges were studied. Specimens were subjected to as many as 5.7 million cycles, and crack readings were taken during each test. The experimental results demonstrate the random nature of cracking on UHPFRC as well as the increase in the crack width under cyclic loads. Finally, this research described the extension of an existing partial-interaction mechanics model to allow for the stress in the fibers and the increase in crack width due to high cycle fatigue.
dc.description.statementofresponsibilityB. D. G. Sepulveda, P. Visintin, A. B. Sturm, D. J. Oehlers
dc.identifier.citationStructural Concrete, 2024; 25(1):379-402
dc.identifier.doi10.1002/suco.202200815
dc.identifier.issn1464-4177
dc.identifier.issn1751-7648
dc.identifier.orcidVisintin, P. [0000-0002-4544-2043]
dc.identifier.urihttps://hdl.handle.net/2440/139268
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/190102650
dc.rights© 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
dc.source.urihttp://dx.doi.org/10.1002/suco.202200815
dc.subjectcrack evolution; high-cycle fatigue; partial-interaction; tension-stiffening; UHPFRC
dc.titleExperimental and theoretical analysis of cracking and tension stiffening in UHPFRC under high-cycle fatigue
dc.typeJournal article
pubs.publication-statusPublished

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