Evaluation of Chloride Diffusion and Corrosion Resistance in Reinforced Concrete Using Internal Curing and Shrinkage Reducing Admixtures

Vázquez Rodríguez, Francisco y Arato Tovar, Ana María y Martínez Delgado, Dora Irma y Guzmán, A. y Elizondo Villarreal, Nora y Puente Ornelas, Rodrigo y Rodriguez, Edén (2018) Evaluation of Chloride Diffusion and Corrosion Resistance in Reinforced Concrete Using Internal Curing and Shrinkage Reducing Admixtures. International Journal of Electrochemical Science, 13. pp. 6027-6047. ISSN 14523981

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Resumen

The properties of high-performance concretes obtained by the internal curing technique were studied in the fresh and hardened states. In some of the concrete mixtures, fine normal weight aggregates were replaced with lightweight aggregates (LWA) at 20 % vol. and ordinary portland cement was replaced by pulverized class F fly ash at 20 % by mass. Additionally, some mixtures were prepared including a shrinkage-reducing admixture, either as part of the mixing water or pre-soaked into the lightweight fine aggregates. The prepared concretes were subjected to degradation tests, such as accelerated carbonation and chloride ion deterioration. In addition, the reinforced concretes were analyzed through electrochemical corrosion tests with the linear polarization resistance technique. It was found that the internally cured concretes presented a mechanical resistance similar to those reported for the reference concretes (conventional concretes), but provided a higher resistance to carbonation, rapid penetration of chloride ions, and a lower chloride ion diffusion coefficient. The reinforcing steel structure in the internally cured concretes showed lower corrosion currents (Icorr) and corrosion potentials (Ecorr) in comparison to the reference concretes. Therefore, the use of the internal curing technique in concretes with pre-soaking in either water or a solution of shrinkage-reducing admixture can be considered as a viable alternative to extend the service life of concrete structures in contact with harmful environments.

Tipo de elemento: Article
Materias: Q Ciencia > QD Química
T Tecnología > TA Ingeniería General y Civil
T Tecnología > TG Construcción de Puentes
T Tecnología > TH Construcción de Edificios
T Tecnología > TN Ingeniería Minera. Metalurgia
Divisiones: Ingeniería Civil > Maestría en Ciencias con Orientación en Materiales de Construcción
Usuario depositante: Dr. Francisco Vazquez-Rodriguez
Creadores:
CreadorEmailORCID
Vázquez Rodríguez, Franciscofcofimeuanl@gmail.comorcid.org/0000-0001-5010-9491
Arato Tovar, Ana MaríaNO ESPECIFICADONO ESPECIFICADO
Martínez Delgado, Dora IrmaNO ESPECIFICADONO ESPECIFICADO
Guzmán, A.NO ESPECIFICADONO ESPECIFICADO
Elizondo Villarreal, NoraNO ESPECIFICADONO ESPECIFICADO
Puente Ornelas, RodrigoNO ESPECIFICADONO ESPECIFICADO
Rodriguez, EdénNO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 26 Ago 2020 14:58
Última modificación: 26 Ago 2020 14:58
URI: http://eprints.uanl.mx/id/eprint/19830

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