EVALUACIÓN DE LA DURABILIDAD EN ELEMENTOS ESTRUCTURALES DE HORMIGÓN ARMADO EN ESTRUCTURAS EMPLAZADAS EN MANTA MANABÍ, ECUADOR.

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Bibliographic Details
Title:	EVALUACIÓN DE LA DURABILIDAD EN ELEMENTOS ESTRUCTURALES DE HORMIGÓN ARMADO EN ESTRUCTURAS EMPLAZADAS EN MANTA MANABÍ, ECUADOR.
Alternate Title:	EVALUATION OF THE DURABILITY OF REINFORCED CONCRETE STRUCTURAL ELEMENTS IN STRUCTURES LOCATED IN MANTA MANABÍ, ECUADOR.
Authors:	Pérez Véliz, Jefferson Arón¹, Guerra Mera, Juan Carlos¹ juan.guerra@utm.edu.ec
Source:	Revista CENIC Ciencias Quimicas. 2024, Vol. 55, p179-195. 17p.
Subjects:	CONCRETE construction, CONCRETE durability, REINFORCED concrete, REINFORCING bars, SERVICE life
Abstract (English):	The durability of structural elements was evaluated in nine reinforced concrete structures located at different distance from the coastline, in a coastal zone of the Manta canton belonging to the Manabi province, Ecuador. The comprehensive behavior of the determined parameters such as Compressive Strength, obtained from Sclerometry, Apparent Resistivity, Corrosion Current Intensity, as an indicator of atmospheric corrosion in the reinforcement steel, and the Carbonation Constant were taken into account. The concrete used in the structural elements did not present the appropriate design for durability, which would have allowed guaranteeing high project service life periods in the selected structures in the study zone. It was possible to estimate the type of service life in which the structures could be found, from the carried out of this study on site. The Ic values allowed us to demonstrate that the structures are in its final and residual service life. According to the statistical model fitted, based on multiple linear regression, the Rc due to its influence on kc and the Ic, was a determining and very important factor in the casting of concrete, before proceeding with the building works of the structures that are intended to be located in coastal zone of high construction potential not only in Manabí, but along the entire coastline of Ecuador. The determined values of kc, in terms of its classification, even predicted in time, a parameter not widely used in diagnostic studies on site and not only in Ecuador, were an effective indicator in terms of concrete quality evaluation used in the building of reinforced concrete structural elements, as well as its influence on the Ic. [ABSTRACT FROM AUTHOR]
Abstract (Spanish):	La durabilidad de elementos estructurales, fue evaluada en nueve estructuras de hormigón armado emplazadas a diferentes distancias desde la línea costera, en una zona el cantón de Manta perteneciente a la provincia de Manabí, Ecuador. Se tuvo en cuenta el comportami ento integral de los parámetros determinados en una columna para cada estructura como fueron la Resistencia a la Compresión (Rc-MPa) obtenida a partir de la Esclerometría, Resistividad Aparente (ρ-kΩ/cm), Intensidad de Corriente de Corrosión (Ic-µA/cm2) como un indicador de la corrosión atmosférica en los aceros de refuerzo, y la Constante de Carbonatación (kc-mm/años1/2). El hormigón usado en los elementos estructurales, no presentó el diseño adecuado por durabilidad, que hubiese permitido garantizar plazos elevados de vida útil de proyecto en las estructuras seleccionadas en la zona de estudio. A partir de la ejecución de este estudio a pie de obra, fue posible estimar el tipo de vida útil en que se pudieran encontrarse las estructuras. Los valores de Ic permitieron demostrar, que las estructuras se encuentran en sus vidas útil última y residual sin funcionamiento social. De acuerdo con los modelos estadísticos ajustados basados en regresiones lineales múltiples, la Rc debido a su influencia en la kc y en la Ic, resultó un factor determinante y muy importante en la elaboración del hormigón, antes de proceder con las labores de construcción de las estructuras que se pretenden emplazar en zonas costeras de elevado potencial constructivo no solo en Manabí, sino en toda la línea costera del Ecuador. Los valores determinados de la kc en cuanto a su clasificación, incluso predicha en el tiempo, parámetro no muy usado en estudios de diagnóstico a pie de obra y no solo en el Ecuador, resultó un indicador eficaz en cuanto a la evaluación de la calidad del hormigón usado en la construcción de los elementos estructurales de hormigón armado, así como su influencia en la Ic. [ABSTRACT FROM AUTHOR]
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Database:	MedicLatina

Description
Abstract:	The durability of structural elements was evaluated in nine reinforced concrete structures located at different distance from the coastline, in a coastal zone of the Manta canton belonging to the Manabi province, Ecuador. The comprehensive behavior of the determined parameters such as Compressive Strength, obtained from Sclerometry, Apparent Resistivity, Corrosion Current Intensity, as an indicator of atmospheric corrosion in the reinforcement steel, and the Carbonation Constant were taken into account. The concrete used in the structural elements did not present the appropriate design for durability, which would have allowed guaranteeing high project service life periods in the selected structures in the study zone. It was possible to estimate the type of service life in which the structures could be found, from the carried out of this study on site. The Ic values allowed us to demonstrate that the structures are in its final and residual service life. According to the statistical model fitted, based on multiple linear regression, the Rc due to its influence on kc and the Ic, was a determining and very important factor in the casting of concrete, before proceeding with the building works of the structures that are intended to be located in coastal zone of high construction potential not only in Manabí, but along the entire coastline of Ecuador. The determined values of kc, in terms of its classification, even predicted in time, a parameter not widely used in diagnostic studies on site and not only in Ecuador, were an effective indicator in terms of concrete quality evaluation used in the building of reinforced concrete structural elements, as well as its influence on the Ic. [ABSTRACT FROM AUTHOR]
ISSN:	10158553