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dc.contributor.authorWang, X.
dc.contributor.authorDong, S.
dc.contributor.authorAshour, Ashraf
dc.contributor.authorDing, S.
dc.contributor.authorHan, B.
dc.date.accessioned2021-07-14T09:34:06Z
dc.date.accessioned2021-07-27T09:09:42Z
dc.date.available2021-07-14T09:34:06Z
dc.date.available2021-07-27T09:09:42Z
dc.date.issued2021-09
dc.identifier.citationWang X, Dong S, Ashour A et al (2021) Bond behaviors between nano-engineered concrete and steel bars. Construction and Building Materials. 299: 124261.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18564
dc.descriptionYesen_US
dc.description.abstractThis paper investigated the bond characteristics between eight types of nanofillers modified reactive powder concrete (RPC) and plain steel bars, aiming to explore the modifying mechanisms and establish a bond-slip relationship model for nanofillers modified RPC and steel bar interface. The experimental results indicated that the incorporation of nanofillers can increase the bond strength and reduce the slip between RPC and plain steel bars. It was shown that a 2.15 MPa/20.5% of absolute/relative increase in cracking bond strength, a 1.25 MPa/10.3% of absolute/relative increase in ultimate bond strength, a 2.35 MPa/22.4% of absolute/relative increase in residual bond strength, a 0.592 mm/56.5% of absolute/relative reduction in ultimate bond slip, and a 1.779 mm/52.1% of absolute/relative reduction in residual bond slip were the best achieved due to the addition of various nanofillers. The enhancement of nanofillers on RPC-steel bar interface has been mainly attributed to RPC microstructure improvement, optimization of intrinsic compositions, and elimination of defects in the interface, especially the underside near steel bar, due to the nano-core effect of nanofillers enriched in the interface. In addition, the bond-slip relationship of nanofillers modified RPC-steel bar interface can be accurately described by the proposed model considering an initial branch.en_US
dc.description.sponsorshipThe authors would like to thank the funding offered by the National Science Foundation of China (51978127 and 51908103), and the Fundamental Research Funds for the Central Universities (DUT21RC(3)039).en_US
dc.language.isoenen_US
dc.publisherElsevier
dc.rights© 2021 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.en_US
dc.subjectNano-engineered concrete-steel bar interfaceen_US
dc.subjectNanofillersen_US
dc.subjectBond characteristicsen_US
dc.subjectModifying mechanismsen_US
dc.subjectBond-slip modelen_US
dc.titleBond behaviors between nano-engineered concrete and steel barsen_US
dc.status.refereedYesen_US
dc.date.Accepted2021-07-13
dc.date.application2021-07-22
dc.typeArticleen_US
dc.type.versionAccepted manuscripten_US
dc.identifier.doihttps://doi.org/10.1016/j.conbuildmat.2021.124261
dc.date.updated2021-07-14T08:34:16Z
refterms.dateFOA2021-07-27T09:10:35Z
dc.openaccess.statusGreenen_US


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