Fundamental characterization of asphalt clay nanocomposites

Basit Öğe Kaydı
dc.contributor.authorNazzal M.D.
dc.contributor.authorKaya S.
dc.contributor.authorGunay T.
dc.contributor.authorAhmedzade P.
dc.date.accessioned2019-10-26T21:35:46Z
dc.date.available2019-10-26T21:35:46Z
dc.date.issued2013
dc.departmentEge Üniversitesien_US
dc.description.abstractThis study aims at characterizing the nanostructure and microstructure and the mechanical behavior of asphalt clay nanocomposites. To this end, various atomic force microscopy (AFM) techniques (i.e., tapping mode imaging, force spectroscopy, and nanoindentation) and X-ray diffraction (XRD) experiments were conducted on asphalt binders modified with different contents of a nanoclay material. The AFM images and XRD results indicated that the nanoclay had an exfoliated structure within the nanocomposite. In addition, the AFM images showed better interaction between the nanoclay layers and the distinct asphalt domains containing the so-called "beelike" structures as compared to the flat asphalt matrix. The results of the force spectroscopy experiments indicated that the inclusion of the nanoclay material significantly enhanced the adhesive forces of asphalt materials, while it had a slightly adverse effect on the cohesive forces. Furthermore, the nanoclay material improved the stiffness and hardness of the asphalt binder measured in the indentation tests. However, this enhancement was affected by the temperature and nanoclay percentage. The results of this study suggest that the mechanical behavior of the asphalt clay nanocomposite can be explained by the formation of a rigid percolating network consisting of the exfoliated nanoclay layers and the fractal asphaltene aggregates in the asphalt binder. The onset of the rigidity percolation appears to be dependent on the effective radius of the asphaltene aggregates and the spacing between the nanoclay layers, a conclusion that may require further experimentation to validate. © 2013 American Society of Civil Engineers.en_US
dc.identifier.doi10.1061/(ASCE)NM.2153-5477.0000050
dc.identifier.endpage8en_US
dc.identifier.issn2153-5434
dc.identifier.issn2153-5434en_US
dc.identifier.issue1en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage1en_US
dc.identifier.urihttps://doi.org/10.1061/(ASCE)NM.2153-5477.0000050
dc.identifier.urihttps://hdl.handle.net/11454/17965
dc.identifier.volume3en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofJournal of Nanomechanics and Micromechanicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAsphalt nanocompositesen_US
dc.subjectAtomic force microscopy (AFM)en_US
dc.subjectNanoclayen_US
dc.subjectNanoindentationen_US
dc.titleFundamental characterization of asphalt clay nanocompositesen_US
dc.typeArticleen_US

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