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10.3390/ma15227976
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Article

Microstructure and Electrical Conductivity of Cement Paste Reinforced with Different Types of Carbon Nanotubes

by
Alicia Páez-Pavón
1,*,
Andrea García-Junceda
2,
Andrea Galán-Salazar
1,
Rosario G. Merodio-Perea
1,
José Sánchez del Río
2,3 and
Isabel Lado-Touriño
1
1
School of Architecture, Engineering and Design, Universidad Europea de Madrid, C/Tajo s/n, 28670 Villaviciosa de Odón, Spain
2
Imdea Materials Institute, C/ Eric Kandel 2, Getafe, 28906 Madrid, Spain
3
Department of Electrical, Electronical and Automatic Control Engineering and Applied Physics, Escuela Técnica Superior de Ingeniería y Diseño Industrial, Universidad Politécnica de Madrid, Rda. de Valencia 3, 28012 Madrid, Spain
*
Author to whom correspondence should be addressed.
Materials 2022, 15(22), 7976; https://doi.org/10.3390/ma15227976
Submission received: 19 October 2022 / Revised: 3 November 2022 / Accepted: 8 November 2022 / Published: 11 November 2022
(This article belongs to the Special Issue Experimental Study, Numerical Simulation & Structural Applications of Construction Materials)
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Abstract

Over the last few years, the addition of small amounts of carbon nanotubes (CNTs) to construction materials has become of great interest, since it enhances some of the mechanical, electrical and thermal properties of the cement. In this sense, single-walled and multi-walled carbon nanotubes (SWCNTs and MWCNTs, respectively) can be incorporated into cement to achieve the above-mentioned improved features. Thus, the current study presents the results of the addition of SWCNTs and MWCNTs on the microstructure and the physical properties of the cement paste. Density was measured through He pycnometry and the mass change was studied by thermogravimetric analysis (TGA). The microstructure and the phases were analyzed using scanning electron microscopy (SEM) and X-ray diffraction (XRD). Finally, the electrical conductivity for different CNT concentrations was measured, and an exponential increase of the conductivity with concentration was observed. This last result opens the possibility for these materials to be used in a high variety of fields, such as space intelligent systems with novel electrical and electronic applications.
Keywords: reinforced cement; multi-walled carbon nanotubes; single-walled carbon nanotubes reinforced cement; multi-walled carbon nanotubes; single-walled carbon nanotubes

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MDPI and ACS Style

Páez-Pavón, A.; García-Junceda, A.; Galán-Salazar, A.; Merodio-Perea, R.G.; Sánchez del Río, J.; Lado-Touriño, I. Microstructure and Electrical Conductivity of Cement Paste Reinforced with Different Types of Carbon Nanotubes. Materials 2022, 15, 7976. https://doi.org/10.3390/ma15227976

AMA Style

Páez-Pavón A, García-Junceda A, Galán-Salazar A, Merodio-Perea RG, Sánchez del Río J, Lado-Touriño I. Microstructure and Electrical Conductivity of Cement Paste Reinforced with Different Types of Carbon Nanotubes. Materials. 2022; 15(22):7976. https://doi.org/10.3390/ma15227976

Chicago/Turabian Style

Páez-Pavón, Alicia, Andrea García-Junceda, Andrea Galán-Salazar, Rosario G. Merodio-Perea, José Sánchez del Río, and Isabel Lado-Touriño. 2022. "Microstructure and Electrical Conductivity of Cement Paste Reinforced with Different Types of Carbon Nanotubes" Materials 15, no. 22: 7976. https://doi.org/10.3390/ma15227976

APA Style

Páez-Pavón, A., García-Junceda, A., Galán-Salazar, A., Merodio-Perea, R. G., Sánchez del Río, J., & Lado-Touriño, I. (2022). Microstructure and Electrical Conductivity of Cement Paste Reinforced with Different Types of Carbon Nanotubes. Materials, 15(22), 7976. https://doi.org/10.3390/ma15227976

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