Effect of silica fume and fly ash admixtures on the corrosion behavior of AISI 304 embedded in concrete exposed in 3.5% NaCl solution

Baltazar Zamora, Miguel Ángel y Bastidas, David M. y Santiago Hurtado, Griselda y Mendoza Rangel, José Manuel y Gaona Tiburcio, Citlalli y Almeraya Calderón, Facundo y Bastidas, José María (2019) Effect of silica fume and fly ash admixtures on the corrosion behavior of AISI 304 embedded in concrete exposed in 3.5% NaCl solution. Materials, 12 (23). pp. 1-10. ISSN 1996-1944

[img]
Vista previa
Texto
24989.pdf - Versión Publicada
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (2MB) | Vista previa
URL o página oficial: https://doi.org/10.3390/ma12234007

Resumen

The use of supplementary cementitious materials such as fly ash, slag, and silica fume improve reinforced concrete corrosion performance, while decreasing cost and reducing environmental impact compared to ordinary Portland cement. In this study, the corrosion behavior of AISI 1018 carbon steel (CS) and AISI 304 stainless steel (SS) reinforcements was studied for 365 days. Three different concrete mixtures were tested: 100% CPC (composite Portland cement), 80% CPC and 20% silica fume (SF), and 80% CPC and 20% fly ash (FA). The concrete mixtures were designed according to the ACI 211.1 standard. The reinforced concrete specimens were immersed in a 3.5 wt.% NaCl test solution to simulate a marine environment. Corrosion monitoring was evaluated using the corrosion potential (Ecorr) according to ASTM C876 and the linear polarization resistance (LPR) according to ASTM G59. The results show that AISI 304 SS reinforcements yielded the best corrosion behavior, with Ecorr values mainly pertaining to the region of 10% probability of corrosion, and corrosion current density (icorr) values indicating passivity after 105 days of experimentation and low probability of corrosion for the remainder of the test period.

Tipo de elemento: Article
Palabras claves no controlados: Concrete, Concrete admixtures, Corrosion, Marine environment, Silica fume, Fly ash
Materias: CONACYT > Ingeniería y Tecnología
T Tecnología > TA Ingeniería General y Civil
Divisiones: Ingeniería Mecánica y Eléctrica > Maestría en Ingeniería Aeronáutica con orientación en: Materiales, Estructuras, o Dinámica de Vuelo
Usuario depositante: Dra Citlalli Gaona
Creadores:
CreadorEmailORCID
Baltazar Zamora, Miguel ÁngelNO ESPECIFICADONO ESPECIFICADO
Bastidas, David M.NO ESPECIFICADONO ESPECIFICADO
Santiago Hurtado, GriseldaNO ESPECIFICADONO ESPECIFICADO
Mendoza Rangel, José ManuelNO ESPECIFICADONO ESPECIFICADO
Gaona Tiburcio, Citlallicitlalli.gaonatbr@uanl.edu.mxorcid.org/0000-0001-9072-3090
Almeraya Calderón, Facundofacundo.almerayacl@uanl.edu.mxorcid.org/0000-0002-3014-2814
Bastidas, José MaríaNO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 08 Mar 2023 20:49
Última modificación: 22 Feb 2024 17:07
URI: http://eprints.uanl.mx/id/eprint/24989

Actions (login required)

Ver elemento Ver elemento

Downloads

Downloads per month over past year