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CNT-Based Functionalization of 9Å Tobermorite to Optimize Concrete Flexural Strength

Published online by Cambridge University Press:  01 March 2016

Mauricio Garza-Castañón
Affiliation:
Universidad de Monterrey, Physics and Mathematics Department, Engineering and Technologies Division, Av. I. Morones Prieto # 4500 Pte., Col. Jesús M. Garza, San Pedro Garza-García, N.L., México, Z.C. 66238
Carlos Vela
Affiliation:
Universidad de Monterrey, Physics and Mathematics Department, Engineering and Technologies Division, Av. I. Morones Prieto # 4500 Pte., Col. Jesús M. Garza, San Pedro Garza-García, N.L., México, Z.C. 66238
Karla Serrano
Affiliation:
Universidad de Monterrey, Physics and Mathematics Department, Engineering and Technologies Division, Av. I. Morones Prieto # 4500 Pte., Col. Jesús M. Garza, San Pedro Garza-García, N.L., México, Z.C. 66238
Juan C. Tudón-Martínez
Affiliation:
Universidad de Monterrey, Physics and Mathematics Department, Engineering and Technologies Division, Av. I. Morones Prieto # 4500 Pte., Col. Jesús M. Garza, San Pedro Garza-García, N.L., México, Z.C. 66238
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Abstract

Several experimental efforts related to the concrete improvement are focused to increase its flexural strength to complement the high compressive strength, which is usually developed by materials of this nature. The flexural strength or modulus of rupture of the concrete is important in civil engineering applications such as infrastructure projects, pavements and buildings. This work proposes an alternative to optimize concrete flexural strength through the functionalization of the 9 Angstrom (Å) Tobermorite using Carbon Nanotubes (CNT). A complete ab-initio, 3D Atomistic Model of the 9Å Tobermorite is presented as the basis of the silicate cementitious hydrated products. In order to validate the model, some mechanical properties were computed using a Density Functional Theory (DFT) based program. Afterwards, a functionalization based on CNTs with different diameters was carried out to improve the flexural strength of the concrete.

Type
Articles
Copyright
Copyright © Materials Research Society 2016 

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References

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