Mechanical properties of graphene nanoplatelets-reinforced concrete prepared with different dispersion techniques

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dc.authoridSevim, Ozer/0000-0001-8535-2344
dc.authoridOzbulut, Osman/0000-0003-3836-3416
dc.contributor.authorJiang, Zhangfan
dc.contributor.authorSevim, Ozer
dc.contributor.authorOzbulut, Osman E.
dc.date.accessioned2025-01-21T16:42:33Z
dc.date.available2025-01-21T16:42:33Z
dc.date.issued2021
dc.departmentKırıkkale Üniversitesi
dc.description.abstractIn this paper, an experimental investigation is carried out to study the effects of graphene nanoplatelets (GNPs) on the mechanical properties of cementitious composites with coarse aggregates. The concrete mixtures with GNPs concentrations ranging from 0.025% to 0.10% by weight of the cement are prepared, where a wet dispersion technique that employs high shear mixing and polycarboxylate-based superplasticizer to disperse GNPs in water. The effects of various dispersion parameters including different high shear mixing durations as well as the use of ultrasonication together with high shear mixing on the dispersion of GNPs are studied. The dispersion quality of GNPs is assessed through optical microscopy, Raman spectroscopy, and Scanning Electron Microscopy tests. Compressive strength and flexural strength tests are conducted to assess the effects of GNPs on mechanical properties of the fabricated GNP-reinforced concrete specimens. Results show that all the dispersion procedures considered in this study can disperse GNPs in water without causing any basal or vacancy defects in graphene sheets and reduce the size of graphene flakes. The use of ultrasonication together with high shear mixing leads to the smallest size graphene sheets. When the GNPs are added to the concrete mixture at a dosage of 0.025%, a maximum increase of 17% in compressive strength is observed, while no significant effect of GNPs on the flexural strength is noticed.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [1059B191800481]
dc.description.sponsorshipThe second author would like to acknowledge the postdoctoral research scholarship supported by The Scientific and Technological Research Council of Turkey (TUBITAK) under grant no: 1059B191800481.
dc.identifier.doi10.1016/j.conbuildmat.2021.124472
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85112285446
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2021.124472
dc.identifier.urihttps://hdl.handle.net/20.500.12587/25097
dc.identifier.volume303
dc.identifier.wosWOS:000696786700003
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofConstruction and Building Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241229
dc.subjectGraphene nanoplatelets; Mechanical properties; Sonication; Dispersion; High shear mixing; Concrete
dc.titleMechanical properties of graphene nanoplatelets-reinforced concrete prepared with different dispersion techniques
dc.typeArticle

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