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Sustainability 2018, 10(3), 822; https://doi.org/10.3390/su10030822

Influence of Graphene Nanosheets on Rheology, Microstructure, Strength Development and Self-Sensing Properties of Cement Based Composites

1
Department of Civil Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
2
Department of Civil Engineering, School of Engineering, Nazarbayev University, Astana 010000, Kazakhstan
3
Department of Civil Engineering, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
*
Authors to whom correspondence should be addressed.
Received: 22 February 2018 / Revised: 4 March 2018 / Accepted: 6 March 2018 / Published: 15 March 2018
(This article belongs to the Special Issue Sustainable Cementitious Materials for the Construction Industry)
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Abstract

In this research, Graphene oxide (GO), prepared by modified hammer method, is characterized using X-ray Diffraction (XRD), Fourier Transform Infrared (FT-IR) Spectrometry and Raman spectra. The dispersion efficiency of GO in aqueous solution is examined by Ultraviolet–visible spectroscopy and it is found that GO sheets are well dispersed. Thereafter, rheological properties, flow diameter, hardened density, compressive strength and electrical properties of GO based cement composite are investigated by incorporating 0.03% GO in cement matrix. The reasons for improvement in strength are also discussed. Rheological results confirm that GO influenced the flow behavior and enhanced the viscosity of the cement based system. From XRD and Thermogravimetric Analysis (TGA) results, it is found that more hydration occurred when GO was incorporated in cement based composite. The GO based cement composite improves the compressive strength and density of mortar by 27% and 1.43%, respectively. Electrical properties results showed that GO–cement based composite possesses self-sensing characteristics. Hence, GO is a potential nano-reinforcement candidate and can be used as self-sensing sustainable construction material. View Full-Text
Keywords: graphene oxide; GO–cement composite; microstructure; rheological properties; bond strengthening; self-sensing graphene oxide; GO–cement composite; microstructure; rheological properties; bond strengthening; self-sensing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kashif Ur Rehman, S.; Ibrahim, Z.; Memon, S.A.; Aunkor, M.T.H.; Faisal Javed, M.; Mehmood, K.; Shah, S.M.A. Influence of Graphene Nanosheets on Rheology, Microstructure, Strength Development and Self-Sensing Properties of Cement Based Composites. Sustainability 2018, 10, 822.

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