Table of Contents
ISRN Nanomaterials
Volume 2013, Article ID 415403, 17 pages
http://dx.doi.org/10.1155/2013/415403
Research Article

Analysis of the Behavior of Carbon Nanotubes on Cementitious Composites

1Universidade Federal Fluminense, 24210-240 Niterói, RJ, Brazil
2Universidade Federal do Rio de Janeiro, 22250-145 Rio de Janeiro, RJ, Brazil
3Universitat Politècnica de Catalunya, 08028 Barcelona, Spain

Received 27 April 2013; Accepted 11 June 2013

Academic Editors: A. M. Ali, R. Azimirad, J. Bai, Z. Jiang, and Z.-M. Liao

Copyright © 2013 Jorge Fernandes de Morais et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nanotechnology has brought significant innovations in science and engineering. Carbon nanotube has been considered a new and outstanding material in nanoscience field with great potential application in the construction industry. The main objective of this study is to analyze the behavior of cementitious materials produced with the insertion of carbon nanotubes of multiple walls in different concentrations and compare their physic-mechanical properties with plain mortar. This research covers the examination of nanoscale cement products and the use of carbon nanotubes to increase the strength and durability of cementitious composites. Three different ratios of carbon nanotubes have been searched: 0.20, 0.40, and 0.60%. To evaluate the mechanical properties of the samples, destructive and nondestructive tests were carried out to obtain compressive strength, tensile strength by diametrical compression, and dynamic modulus of elasticity as well as to determine their deformation properties. Methods of instrumentation such as scanning electron microscopy and porosity were also used in the analysis of microstructure of the materials. The study presents graphs, tables, and figures describing the behavior of CNT added to mortars samples, allowing a better understanding of the use of this new material in the construction industry.