Skip to main content Accessibility help
×
Home

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

  • Mauricio Garza-Castañón (a1), Carlos Vela (a1), Karla Serrano (a1) and Juan C. Tudón-Martínez (a1)

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.

Copyright

References

Hide All
[1] Merlino, S., Bonaccorsi, E., & Armbruster, T. (1999). Tobermorites: Their real structure and order-disorder (OD) character. American Mineralogist, 84, 16131621.
[2] Buer, Bjørkedalen, Porsgrunn, Telemark, Noruega © OT. Ljostad 2005 Consultado el 18 de Octubre del 2014, disponible en: http://www.mindat.org/photo-40826.html
[3] Merlino, S., Bonaccorsi, E., & Armbruster, T. (1999). AMCSD Search Results: Tobermorite. Consultado el 18 de Octubre del 2014, de American Mineralogist Crystal Structure Database, disponible en: http://rruff.geo.arizona.edu/AMS/minerals/Tobermorite
[4] Tunega, D., & Zaoui, A. (2011). Understanding of Bonding and Mechanical Characteristics of Cementitious Mineral Tobermorite From First Principles. Journal of Computational Chemistry, 32, pp. 306314.
[5] González-Teresa, R., Morales-Florez, V., Manzano, H., Dolado, J.S.. (2010). Modelos estructurales del empaquetamiento aleatorio de partículas esféricas de Tobermorita: una aproximación computacional sencilla. Materiales de la Construcción, 60, 298, pp. 715.
[6] Moon, J. Experimental and Theoretical Studies on Mechanical Properties of Complex Oxides in Concrete. Electronic Thesis and Dissertations. UC Berkeley. 2013. Consultado el 19 de Octubre del 2014, http://www.escholarship.org/uc/item/6z52s8zg#page-42.

Keywords

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

  • Mauricio Garza-Castañón (a1), Carlos Vela (a1), Karla Serrano (a1) and Juan C. Tudón-Martínez (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed