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Nanomaterials
Volume 13
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10.3390/nano13050901
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Communication

Cement-Based Composites Containing Oxidized Graphene Nanoplatelets: Effects on the Mechanical and Electrical Properties

by
Luca Lavagna
1,2,*,
Andrea Santagati
1,
Mattia Bartoli
2,3,
Daniel Suarez-Riera
2,4 and
Matteo Pavese
1,2,*
1
Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
2
Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Via G. Giusti 9, 50121 Florence, Italy
3
Center for Sustainable Future, Italian Institute of Technology, Via Livorno 60, 10144 Turin, Italy
4
Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
*
Authors to whom correspondence should be addressed.
Nanomaterials 2023, 13(5), 901; https://doi.org/10.3390/nano13050901
Submission received: 25 January 2023 / Revised: 26 February 2023 / Accepted: 27 February 2023 / Published: 27 February 2023
(This article belongs to the Special Issue Smart Cementitious Materials for Sustainable Building Engineering)
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Abstract

Graphene nanoplatelets can improve the electrical and mechanical properties of cement matrix composites. The dispersion and interaction of graphene in the cement matrix appears to be difficult due to its hydrophobic nature. By introducing polar groups, graphene oxidation improves the level of dispersion and interaction with the cement. In this work, graphene oxidation using sulfonitric acid for 10, 20, 40, and 60 min was studied. Thermogravimetric Analysis (TGA) and Raman spectroscopy were employed to analyze the graphene before and after the oxidation. The mechanical properties of the final composites showed an improvement of 52% in the flexural strength, 4% in the fracture energy, and 8% in the compressive strength in the case of 60 min of oxidation. In addition, the samples showed a reduction of at least one order of magnitude in electrical resistivity when compared with pure cement.
Keywords: graphene nanoplatelets; cement-based composites; oxidation; mechanical properties; electrical properties graphene nanoplatelets; cement-based composites; oxidation; mechanical properties; electrical properties

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MDPI and ACS Style

Lavagna, L.; Santagati, A.; Bartoli, M.; Suarez-Riera, D.; Pavese, M. Cement-Based Composites Containing Oxidized Graphene Nanoplatelets: Effects on the Mechanical and Electrical Properties. Nanomaterials 2023, 13, 901. https://doi.org/10.3390/nano13050901

AMA Style

Lavagna L, Santagati A, Bartoli M, Suarez-Riera D, Pavese M. Cement-Based Composites Containing Oxidized Graphene Nanoplatelets: Effects on the Mechanical and Electrical Properties. Nanomaterials. 2023; 13(5):901. https://doi.org/10.3390/nano13050901

Chicago/Turabian Style

Lavagna, Luca, Andrea Santagati, Mattia Bartoli, Daniel Suarez-Riera, and Matteo Pavese. 2023. "Cement-Based Composites Containing Oxidized Graphene Nanoplatelets: Effects on the Mechanical and Electrical Properties" Nanomaterials 13, no. 5: 901. https://doi.org/10.3390/nano13050901

APA Style

Lavagna, L., Santagati, A., Bartoli, M., Suarez-Riera, D., & Pavese, M. (2023). Cement-Based Composites Containing Oxidized Graphene Nanoplatelets: Effects on the Mechanical and Electrical Properties. Nanomaterials, 13(5), 901. https://doi.org/10.3390/nano13050901

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