Revealing the dependence of the physiochemical and mechanical properties of cement composites on graphene oxide concentration

Aliakbar Gholampour, Meisam Valizadeh Kiamahalleh, Diana N. H. Tran, Togay Ozbakkaloglu, Dusan Losic

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Abstract

This paper presents a comprehensive study to evaluate the influence of graphene oxide (GO) concentration on the physiochemical and mechanical properties of cement mortar composites. Scanning electron micrographs (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) characterizations were performed to understand the correlation between physicochemical and observed axial tension and compression properties of GO-cement mortar composites. The results show considerable concentration dependence, with the optimum concentration of 0.1% GO that increases the tensile and compressive strength of the composite by 37.5% and 77.7%, respectively. These results are explained by the stronger bonding of calcium silicate hydrate (C-S-H) components in the cement matrix in the presence of GO sheets and the dependence of their dispersions and possible aggregation.

Original languageEnglish
Pages (from-to)55148-55156
Number of pages9
JournalRSC Advances
Volume7
Issue number87
DOIs
Publication statusPublished - 5 Dec 2017
Externally publishedYes

Bibliographical note

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Keywords

  • physiochemical
  • mechanical
  • properties
  • cement composites
  • graphene oxide concentration
  • Scanning electron micrographs
  • SEM
  • energy-dispersive X-ray spectroscopy
  • EDX
  • X-ray diffraction
  • XRD
  • thermogravimetric analysis
  • TGA
  • Fourier transform infrared spectroscopy
  • FTIR
  • GO

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