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

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2020, 30(1), pp.93-98
  • DOI : 10.1007/s42823-019-00074-4
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : February 12, 2019
  • Accepted : August 8, 2019
  • Published : February 1, 2020

Zhu Siyue 1 Qin Xiantao 2 Zou Zuxu 1 Zhang Rongtang 1 Jiang Yi 3

1Wuhan Polytechnic University
2Polytechnic University
3Purdue University

Accredited

ABSTRACT

For applications in cement-based materials, studies on carbon-based nanomaterials have been almost exclusively on carbon nanotubes, carbon nanofbers, 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 efect 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 efective and stable dispersion is achieved. At last, the piezoresistivities under compressive load of GPs/cement composites pastes at diferent additions of GPs are studied by comparing with plain cement paste.

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