Effect of Mixing Method on Piezoresistive Behavior of Self-sensing Mortar Composites with Graphene Nanoplatelets
Graphene nanoplatelets (GNPs) have emerged as ideal nanofillers for composite materials. However, the understanding of behavior of cementitious composites with GNPs is still in its infancy. This paper investigates the development of self-sensing GNP-reinforced cement composites using a simple fabrication method that does not require special treating procedures such as ultrasonication and chemical (covalent) treatments for the dispersion of GNPs. The GNPs used in this study have an average thickness of 8 nanometers and a diameter of 25 microns. Standard prismatic mortar specimens containing different GNP concentrations are prepared using three different mixing procedures. In addition, the influence of fly ash on the electrical properties of the GNP-reinforced mortar specimens is assessed. The effects of GNP content on the electrical properties and piezoresistive characteristics of mortar specimens are explored. The resistivity of the specimens is measured using a four-point probe method. The piezoresistive response of GNP-reinforced cement composites is evaluated under cyclic compressive loads.
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Supplemental Notes:
- This paper was sponsored by TRB committee AFN10 Standing Committee on Basic Research and Emerging Technologies Related to Concrete.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Jiang, Zhangfan
- Ozbulut, Osman E
- Harris, Devin K
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Conference:
- Transportation Research Board 96th Annual Meeting
- Location: Washington DC, United States
- Date: 2017-1-8 to 2017-1-12
- Date: 2017
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References; Tables;
- Pagination: 16p
- Monograph Title: TRB 96th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Composite materials; Electrical properties; Fly ash
- Uncontrolled Terms: Cement composites; Graphene nanoplatelet; Nanofillers; Piezoresistivity; Self-sensing materials
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 01629826
- Record Type: Publication
- Report/Paper Numbers: 17-05886
- Files: TRIS, TRB, ATRI
- Created Date: Mar 26 2017 5:39PM