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

  1. Páez-Pavón, Alicia 1
  2. García-Junceda, Andrea 2
  3. Galán-Salazar, Andrea 1
  4. Merodio-Perea, Rosario G. 1
  5. Sánchez del Río, José 23
  6. Lado-Touriño, Isabel 1
  1. 1 Universidad Europea de Madrid
    info

    Universidad Europea de Madrid

    Madrid, España

    ROR https://ror.org/04dp46240

  2. 2 Instituto IMDEA Materiales
    info

    Instituto IMDEA Materiales

    Getafe, España

    ROR https://ror.org/009s53a61

  3. 3 Universidad Politécnica de Madrid
    info

    Universidad Politécnica de Madrid

    Madrid, España

    ROR https://ror.org/03n6nwv02

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Revista:
Materials

ISSN: 1996-1944

Año de publicación: 2022

Volumen: 15

Número: 22

Páginas: 7976

Tipo: Artículo

DOI: 10.3390/MA15227976 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Materials

Resumen

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.

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