Effects of graphene nanoplatelets type on self-sensing properties of cement mortar composites

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dc.authoridSevim, Ozer/0000-0001-8535-2344
dc.contributor.authorSevim, Ozer
dc.contributor.authorJiang, Zhangfan
dc.contributor.authorOzbulut, Osman E.
dc.date.accessioned2025-01-21T16:38:17Z
dc.date.available2025-01-21T16:38:17Z
dc.date.issued2022
dc.departmentKırıkkale Üniversitesi
dc.description.abstractGraphene nanoplatelets (GNPs) that possess high electrical conductivity and relatively low cost have been considered to obtain self-sensing capability in cementitious composites. However, there is limited understanding on the effects of physical properties of GNPs such as particle size and surface area on the self-sensing charac-teristics of the cement composites. In this study, nine types of GNPs that have different surface areas, particle sizes, and thicknesses are considered in the development of self-sensing mortar composites. For each type of GNPs, specimens with GNP concentrations of 2.5%, 5%, and 7.5% by weight of cement were prepared. The bulk electrical resistivity of the developed mortar composites was measured at different curing ages. The compressive strength of the specimens was also evaluated. The piezoresistive behaviors of the GNP-reinforced mortar com-posites were studied through cyclic compressive loading tests at different load levels. During piezoresistivity tests, the measurements were conducted through both direct current (DC) and alternating current (AC) and the results obtained from each method were evaluated. Results reveal that GNPs with very small particle sizes and large surface areas cannot disperse effectively in the cement matrix and do not provide piezoresistive charac-teristics. For GNPs with relatively smaller surface areas, the GNPs with higher particle sizes form effective conductive paths and exhibit better piezoresistive characteristics.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK); [1059B191800481]
dc.description.sponsorshipAcknowledgment The first 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.2022.129488
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85140289748
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2022.129488
dc.identifier.urihttps://hdl.handle.net/20.500.12587/24627
dc.identifier.volume359
dc.identifier.wosWOS:000882196600003
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 (GNP); Self-sensing; Structural health monitoring; Piezoresistivity; Compressive strength; Cyclic loading
dc.titleEffects of graphene nanoplatelets type on self-sensing properties of cement mortar composites
dc.typeArticle

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