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The Influence of Graphene Oxide on Mechanical Properties andDurability Increase of Concrete Pavement

Credit to Download: 1 | Page Numbers 12 | Abstract Views: 359
Year: 2014
COI code: JR_IJTE-2-2_003
Paper Language: English

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Authors The Influence of Graphene Oxide on Mechanical Properties andDurability Increase of Concrete Pavement

  Abolfazl Hassani - Professor, Department of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran
  Babak Fakhim - Ph. D. Candidate, Department of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran
  Alimorad Rashidi - Associate Professor, Nanotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
  Parviz Ghoddousi - Assistant Professor, Department of Civil Engineering, Iran University of Science and Technology, Tehran

Abstract:

Herein, the performance of graphene oxide (GO) in improving mechanical properties and subsequently reducing the permeability of cement composites used in concrete pavement, is studied. A polycarboxylate superplasticizer wasused to improve the dispersion of GO flakes in the cement. The mechanical strength of graphene-cement nanocomposites containing 0.1–2 wt% GO and 0.5 wt% superplasticizer was measured and compared with that of cement prepared without GO. We found that the tensile strength of the cement mortar increased with GO content, reaching 1.5%, a 48% increase in tensile strength. Ultra high-resolution field emission scanning electron microscopy (FE-SEM) used to observe the fracture surface of samples containing 1.5 wt% GO indicated that the nano GO flakes were well dispersed in the matrix, and no aggregates were observed. FE-SEM observation also revealed good bonding between the GO surfaces and the surrounding cement matrix. In addition, XRD diffraction data showed growth of the calcium silicate hydrates (C-S-H) gels in GO cement mortar compared with the normal cement mortar. Growths of the calcium silicate hydrates (C-S-H) gels causes reduce in permeability and consequently improvement in durability of the cement composite.

Keywords:

Cement, nanocomposite, graphene oxide, mechanical properties, tensile strength. Pavement

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COI code: JR_IJTE-2-2_003

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Hassani, Abolfazl; Babak Fakhim; Alimorad Rashidi & Parviz Ghoddousi, 2014, The Influence of Graphene Oxide on Mechanical Properties andDurability Increase of Concrete Pavement, International Journal of Transportation Engineering 2 (2), https://www.civilica.com/Paper-JR_IJTE-JR_IJTE-2-2_003.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Hassani, Abolfazl; Babak Fakhim; Alimorad Rashidi & Parviz Ghoddousi, 2014)
Second and more: (Hassani; Fakhim; Rashidi & Ghoddousi, 2014)
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Paper No.: 25987
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