Effect of Cathodic Protection on Reinforced Concrete with Fly Ash Using Electrochemical Noise

García Contreras, Jorge y Gaona Tiburcio, Citlalli y López Cazares, Irene y Sánchez Díaz, Guillermo y Ibarra Castillo, Juan Carlos y Jáquez Muñoz, Jesús Manuel y Nieves Mendoza, Demetrio y Maldonado Bandala, Erick y Olguín Coca, Javier y López León, Luis Daimir y Almeraya Calderón, Facundo (2021) Effect of Cathodic Protection on Reinforced Concrete with Fly Ash Using Electrochemical Noise. Materials, 14 (9). pp. 1-18. ISSN 1996-1944

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URL o página oficial: https://www.mdpi.com/journal/materials

Resumen

Corrosion of steel reinforcement is the major factor that limits the durability and serviceability performance of reinforced concrete structures. Impressed current cathodic protection (ICCP) is a widely used method to protect steel reinforcements against corrosion. This research aimed to study the effect of cathodic protection on reinforced concrete with fly ash using electrochemical noise (EN). Two types of reinforced concrete mixtures were manufactured; 100% Ordinary Portland Cement (OCP) and replacing 15% of cement using fly ash (OCPFA). The specimens were under-designed protected conditions (−1000 ≤ E ≤ −850 mV vs. Ag/AgCl) and cathodic overprotection (E < −1000 mV vs. Ag/AgCl) by impressed current, and specimens concrete were immersed in a 3.5 wt.% sodium chloride (NaCl) Solution. The analysis of electrochemical noise-time series showed that the mixtures microstructure influenced the corrosion process. Transients of uniform corrosion were observed in the specimens elaborated with (OPC), unlike those elaborated with (OPCFA). This phenomenon marked the difference in the concrete matrix’s hydration products, preventing Cl− ions flow and showing passive current and potential transients in most specimens.

Tipo de elemento:

Article

Palabras claves no controlados:

Electrochemical noise, Fly ash, Concrete, Cathodic protection, Microstructure.

Materias:

CONACYT > Ingeniería y Tecnología
T Tecnología > TA Ingeniería General y Civil

Divisiones:

Ingeniería Mecánica y Eléctrica

Usuario depositante:

Dra Citlalli Gaona

Creadores:

Creador	Email	ORCID
García Contreras, Jorge	NO ESPECIFICADO	NO ESPECIFICADO
Gaona Tiburcio, Citlalli	citlalli.gaonatbr@uanl.edu.mx	orcid.org/0000-0001-9072-3090
López Cazares, Irene	NO ESPECIFICADO	NO ESPECIFICADO
Sánchez Díaz, Guillermo	NO ESPECIFICADO	NO ESPECIFICADO
Ibarra Castillo, Juan Carlos	NO ESPECIFICADO	NO ESPECIFICADO
Jáquez Muñoz, Jesús Manuel	NO ESPECIFICADO	NO ESPECIFICADO
Nieves Mendoza, Demetrio	NO ESPECIFICADO	NO ESPECIFICADO
Maldonado Bandala, Erick	NO ESPECIFICADO	NO ESPECIFICADO
Olguín Coca, Javier	NO ESPECIFICADO	NO ESPECIFICADO
López León, Luis Daimir	NO ESPECIFICADO	NO ESPECIFICADO
Almeraya Calderón, Facundo	facundo.almerayacl@uanl.edu.mx	orcid.org/0000-0002-3014-2814