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Preparation and evaluation of surfactant-stabilized graphene sheets and piezoresistivity of GPs/cement composite

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Abstract

For applications in cement-based materials, studies on carbon-based nanomaterials have been almost exclusively on carbon nanotubes, carbon nanofibers, and graphite oxide. Graphene sheets (GPs), as a kind of carbon-based nanomaterials, show unusual mechanical, electrical, optical, and other properties. In this paper, the main focus is to enhance the effect of GPs by improving dispersion through ultrasonication and use of surfactant. Then, dispersion and stability are quantitatively measured by comparing absorbance spectra through spectrophotometry and qualitatively observed through digital imaging and SEM imaging. Therefore, the dispersing protocol is optimized and the most effective and stable dispersion is achieved. At last, the piezoresistivities under compressive load of GPs/cement composites pastes at different additions of GPs are studied by comparing with plain cement paste.

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Acknowledgements

The authors gratefully acknowledge the support from the Natural Science Foundation of Hubei Province of China (No. 2018CFB325) and Research and Innovation Initiatives of WHPU (Nos. 2016J01, 2017y33).

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Authors and Affiliations

  1. School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, 430023, China

    Siyue Zhu, Xiantao Qin, Zuxu Zou, Rongtang Zhang & Yi Jiang

  2. School of Building Construction Management, Purdue University, West Lafayette, IN, 47906, USA

    Yi Jiang

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  1. Siyue Zhu
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  2. Xiantao Qin
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Correspondence to Siyue Zhu.

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Zhu, S., Qin, X., Zou, Z. et al. Preparation and evaluation of surfactant-stabilized graphene sheets and piezoresistivity of GPs/cement composite. Carbon Lett. 30, 93–98 (2020). https://doi.org/10.1007/s42823-019-00074-4

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  • DOI: https://doi.org/10.1007/s42823-019-00074-4

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