Mechanical Properties of Cement Reinforced with Pristine and Functionalized Carbon Nanotubes: Simulation Studies

  1. Merodio-Perea, Rosario G.
  2. Lado-Touriño, Isabel
  3. Páez-Pavón, Alicia
  4. Talayero, Carlos
  5. Galán-Salazar, Andrea
  6. Aït-Salem, Omar
  1. 1 Universidad Europea de Madrid
    info

    Universidad Europea de Madrid

    Madrid, España

    ROR https://ror.org/04dp46240

Revista:
Materials

ISSN: 1996-1944

Año de publicación: 2022

Volumen: 15

Número: 21

Páginas: 7734

Tipo: Artículo

DOI: 10.3390/MA15217734 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Materials

Resumen

Concrete is well known for its compression resistance, making it suitable for any kind of construction. Several research studies show that the addition of carbon nanostructures to concrete allows for construction materials with both a higher resistance and durability, while having less porosity. Among the mentioned nanostructures are carbon nanotubes (CNTs), which consist of long cylindrical molecules with a nanoscale diameter. In this work, molecular dynamics (MD) simulations have been carried out, to study the effect of pristine or carboxyl functionalized CNTs inserted into a tobermorite crystal on the mechanical properties (elastic modulus and interfacial shear strength) of the resulting composites. The results show that the addition of the nanostructure to the tobermorite crystal increases the elastic modulus and the interfacial shear strength, observing a positive relation between the mechanical properties and the atomic interactions established between the tobermorite crystal and the CNT surface. In addition, functionalized CNTs present enhanced mechanical properties.

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Información de financiación

The authors want to thank Universidad Europea de Madrid for financial support

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