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International Journal of Corrosion
Volume 2012, Article ID 451864, 5 pages
http://dx.doi.org/10.1155/2012/451864
Research Article

Corrosion of Modified Concrete with Sugar Cane Bagasse Ash

1Facultad de Ingeniería Los Mochis, Universidad Autónoma de Sinaloa, Fuente de Poseidón y Prol. Ángel Flores S/N, C.P. 87223 Los Mochis, SIN, Mexico
2Centro de Investigación e Innovación en Ingeniería Aeronáutica CIIIA, FIME-Universidad Autónoma de Nuevo León, Avenida Universidad S/N, Ciudad Universitaria, C.P. 87223 San Nicolás de los Garza, NL, Mexico
3Grupo Corrosión, Centro de Investigación en Materiales Avanzados, Miguel de Cervantes No. 120, C.P. 31109 Chihuahua, CHIH, Mexico

Received 29 February 2012; Accepted 30 May 2012

Academic Editor: Andres A. Torres Acosta

Copyright © 2012 R. E. Núñez-Jaquez 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

Concrete is a porous material and the ingress of water, oxygen, and aggressive ions, such as chlorides, can cause the passive layer on reinforced steel to break down. Additives, such as fly ash, microsilica, rice husk ash, and cane sugar bagasse ash, have a size breakdown that allows the reduction of concrete pore size and, consequently, may reduce the corrosion process. The objective of this work is to determine the corrosion rate of steel in reinforced concrete by the addition of 20% sugar cane bagasse ash by weight of cement. Six prismatic specimens ( cm) with an embedded steel rod were prepared. Three contained 20% sugar cane bagasse ash by weight of cement and the other three did not. All specimens were placed in a 3.5% NaCl solution and the corrosion rate was determined using polarization resistance. The results showed that reinforced concrete containing sugar cane bagasse ash has the lowest corrosion rates in comparison to reinforced concrete without the additive.