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dc.contributor.authorDong, S.
dc.contributor.authorWang, Y.
dc.contributor.authorAshour, Ashraf F.
dc.contributor.authorHan, B.
dc.contributor.authorOu, J.
dc.date.accessioned2020-09-16T11:54:50Z
dc.date.accessioned2020-09-28T10:58:07Z
dc.date.available2020-09-16T11:54:50Z
dc.date.available2020-09-28T10:58:07Z
dc.date.issued2021-01
dc.identifier.citationDong S, Wang Y, Ashour A et al (2021) Uniaxial compressive fatigue behavior of ultra-high performance concrete reinforced with super-fine stainless wires. International Journal of Fatigue. 142: 105959.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18040
dc.descriptionYesen_US
dc.description.abstractSuper-fine stainless wires (SSWs) with micron diameter and large specific surface area can simultaneously strengthen and toughen reactive powder concrete (RPC) at low volume fraction, so SSW reinforced RPC composites have potential for developing infrastructures bearing fatigue load or with aseismic requirements. In this paper, the uniaxial compressive fatigue characteristics of such composites under high stress levels were investigated, and the modification mechanisms of SSWs to RPC were revealed through failure state and microstructure analyses. The results showed that incorporating only 0.5 vol.% SSWs into RPC enables the fatigue life and energy dissipation capacity to increase by 252.0% and 262.3%, meanwhile, the fatigue limit strength of composites at the failure probability of 50% reaches up to 76.6% of static uniaxial compressive strength, due to the improvement effect on microstructure compactness, inhibiting effect on flaw initiation, and the ability to convert single main crack into radial multiple micro cracks centered on SSWs. Furthermore, the average maximum fatigue strain and residual strain of composites are improved by 73.7% and 87.2%, respectively, which can be ascribed to the bridging, debonding and being pulled-off effect of SSWs. It can be therefore concluded that the incorporation of SSWs endows RPC with excellent fatigue performance, thus further enlarging the application of composites.en_US
dc.description.sponsorshipThe authors would like to thank the National Science Foundation of China (51908103 and 51978127), and the China Postdoctoral Science Foundation (2019M651116) for providing funding to carry out this investigation.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1016/j.ijfatigue.2020.105959en_US
dc.rights© 2020 Elsevier Ltd. All rights reserved. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license (https://creativecommons.org/licenses/by/4.0/)en_US
dc.subjectSuper-fine stainless wireen_US
dc.subjectUltra-high performance concreteen_US
dc.subjectFatigue lifeen_US
dc.subjectDamage evolutionen_US
dc.subjectMicrostructureen_US
dc.titleUniaxial compressive fatigue behavior of ultra-high performance concrete reinforced with super-fine stainless wiresen_US
dc.status.refereedYesen_US
dc.date.Accepted2020-09-15
dc.date.application2020-09-19
dc.typeArticleen_US
dc.type.versionAccepted manuscripten_US
dc.date.updated2020-09-16T10:54:59Z
refterms.dateFOA2020-09-28T10:58:36Z


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