ANÁLISIS DE AFECTACIONES POR CORROSIÓN ATMOSFÉRICA EN ESTRUCTURAS DE HORMIGÓN ARMADO EN CRUCITA, PORTOVIEJO, MANABÍ ECUADOR.

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Bibliographic Details
Title:	ANÁLISIS DE AFECTACIONES POR CORROSIÓN ATMOSFÉRICA EN ESTRUCTURAS DE HORMIGÓN ARMADO EN CRUCITA, PORTOVIEJO, MANABÍ ECUADOR.
Alternate Title:	ANALYSIS OF ATMOSPHERIC CORROSION AFFECTIONS ON REINFORCED CONCRETE STRUCTURES IN CRUCITA, PORTOVIEJO, MANABÍ, ECUADOR.
Authors:	Rincón Zambrano, Diego Andrés¹, Guerra Mera, Juan Carlos² juan.guerra@utm.edu.ec, Castañeda Valdés, Abel³
Source:	Revista CENIC Ciencias Quimicas. 2025, Vol. 56, p1-23. 23p.
Subjects:	REINFORCED concrete, SERVICE life, ELECTROLYTIC corrosion, CHLORIDE ions, SHORELINES, ELECTRICAL resistivity, COMPRESSIVE strength, CORROSION & anti-corrosives
Geographic Terms:	ECUADOR
Abstract (English):	A study on atmospheric corrosion affectations analysis in 10 reinforced concrete structures located at different distances from the coastline in Crucita, Manabí, Ecuador was carried out. To define the type of service life of the structures was the main objective. Compressive Strength (Rc-MPa) obtained from Sclerometry, Apparent Electrical Resistivity (ρ-kΩ/cm) and Corrosion Current Intensity (Ic-µA/cm²) were measured in a column in each of the structures. The results showed that the 10 reinforced concrete structures were found in its residual service life without functioning, confirmed by visual observation. From the behavior of Rc, ρ and Ic values it was possible to confirm that the concrete used did not present the necessary and sufficient quality for the structures to have maintained over time its initial service life conditions of the project, such as aesthetics, functionality and safety in the coastal zone with high construction potential. According to the fit of statistical models based on multiple linear regressions, it was further demonstrated that Rc and Total Chloride Ion Concentration (CClt-), including its penetration mechanism from the surface to the concrete interior, were necessary and very influential factors in the adequate durability performance of concrete. It was demonstrated, as a first experience in Ecuador and not much taken into account worldwide, to calculate whenever possible, the coefficient ... as another indicator in the evaluation of the quality of concrete, which represents, in addition to the speed with which the CClt- could penetrate in the concrete, the relationship between the concrete quality with the natural environment of exposure, the atmosphere. The behavior of Ic values as a function of distance from the coastline increasing allowed the fitting of models based on a decreasing exponential function. Both fitted models can be considered as predictions of the service life of structures that may be located at higher distances from the coastline. [ABSTRACT FROM AUTHOR]
Abstract (Spanish):	Un estudio sobre el análisis de afectaciones por corrosión atmosférica fue realizado en 10 estructuras de hormigón armado emplazadas a diferentes distancias desde línea costera en Crucita, Manabí Ecuador. El objetivo general se basó en definir el tipo de vida útil de las estructuras. Resistencia a la Compresión (Rc-MPa) obtenida a partir de la Esclerometría, Resistividad Eléctrica Aparente (ρ-kΩ/cm) e Intensidad de Corriente de Corrosión (Ic-µA/cm²) fueron medidos en una columna en cada una de las estructuras. Los resultados permitieron demostrar, que las 10 estructuras de hormigón armado se encontraban en su vida útil residual sin funcionamiento, confirmado con su observación visual. A partir del comportamiento de los valores de Rc, ρ e Ic se pudo confirmar que el hormigón usado, no presentó la calidad necesaria y suficiente para que las estructuras hubiesen mantenido en el tiempo sus condiciones iniciales de vida útil de proyecto como son estética, funcionalidad y seguridad en la zona costera de elevado potencial constructivo. De acuerdo con el ajuste de modelos estadísticos basados en regresiones lineales múltiples, se continuó demostrando, que la Rc y la Concentración de iones Cloruro Totales (CClt-), donde se incluye su mecanismo de penetración desde la superficie hacia el interior del hormigón, constituyeron factores necesarios y muy influyentes en el desempeño adecuado por durabilidad del hormigón. Se demostró, como una primera experiencia en el Ecuador y no muy tenida en cuenta a nivel mundial, calcular siempre que sea posible, el coeficiente ..., como un indicador más en la evaluación de la calidad del hormigón, el cual representa, además de la velocidad con la cual la pudieran penetrar en el hormigón, la relación entre la calidad del hormigón con el medio natural de exposición, la atmósfera. El comportamiento de los valores de Ic en función del incremento de la distancia desde la línea costera, permitió el ajuste de modelos basados en una función exponencial decreciente. Ambos modelos ajustados, pueden ser considerados como de predicción de la vida útil de las estructuras que pudieran estar emplazadas a distancias mayores desde la línea costera. [ABSTRACT FROM AUTHOR]
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Database:	MedicLatina

Description
Abstract:	A study on atmospheric corrosion affectations analysis in 10 reinforced concrete structures located at different distances from the coastline in Crucita, Manabí, Ecuador was carried out. To define the type of service life of the structures was the main objective. Compressive Strength (Rc-MPa) obtained from Sclerometry, Apparent Electrical Resistivity (ρ-kΩ/cm) and Corrosion Current Intensity (Ic-µA/cm²) were measured in a column in each of the structures. The results showed that the 10 reinforced concrete structures were found in its residual service life without functioning, confirmed by visual observation. From the behavior of Rc, ρ and Ic values it was possible to confirm that the concrete used did not present the necessary and sufficient quality for the structures to have maintained over time its initial service life conditions of the project, such as aesthetics, functionality and safety in the coastal zone with high construction potential. According to the fit of statistical models based on multiple linear regressions, it was further demonstrated that Rc and Total Chloride Ion Concentration (CClt-), including its penetration mechanism from the surface to the concrete interior, were necessary and very influential factors in the adequate durability performance of concrete. It was demonstrated, as a first experience in Ecuador and not much taken into account worldwide, to calculate whenever possible, the coefficient ... as another indicator in the evaluation of the quality of concrete, which represents, in addition to the speed with which the CClt- could penetrate in the concrete, the relationship between the concrete quality with the natural environment of exposure, the atmosphere. The behavior of Ic values as a function of distance from the coastline increasing allowed the fitting of models based on a decreasing exponential function. Both fitted models can be considered as predictions of the service life of structures that may be located at higher distances from the coastline. [ABSTRACT FROM AUTHOR]
ISSN:	10158553