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Correlación entre ancho de grieta del recubrimiento del concreto y corrosión del refuerzo en elementos expuestos a un ambiente natural contaminado por cloruros

Authors: Andrade Perdrix, Carmen; Muñoz, Alejandro; Torres-Acosta, A. A.;

Correlación entre ancho de grieta del recubrimiento del concreto y corrosión del refuerzo en elementos expuestos a un ambiente natural contaminado por cloruros

Abstract

[ES] La corrosión del refuerzo genera daños variados a estructuras de concreto que influyen en la capacidad de carga; entre estos daños se puede mencionar el agrietamiento del recubrimiento del concreto. Este trabajo proporciona resultados de campo en el tema de propagación de grietas del recubrimiento del concreto por corrosión del refuerzo después de una exposición natural por varios años. Los elementos estructurales evaluados fueron una viga T y una columna cuadrada expuestos al ambiente atmosférico de Madrid, España. Dos formulas empíricas fueron usadas para correlacionar los valores obtenidos del agrietamiento del recubrimiento por corrosión: w=k Px/(C/φ), y w=k Px/Ro, en donde w es el ancho de la grieta por corrosión, k es una constante de proporcionalidad, Px es la penetración por la corrosión en el tiempo, C/φ es la relación recubrimiento de concreto/diámetro del refuerzo, y Ro es el radio original del refuerzo.

[EN] Reinforcement corrosion leads into several damages which influence the structural load-bearing capacity, among which can be mentioned the cracking of concrete cover. This work gives results on the crack width growing in accelerated corrosion tests and from the observation during several years of real concrete elements. The elements studied were one T beam and one column exposed to the atmosphere of Madrid, Spain. Two empiric expressions have been fitted to the results of cover cracking: w=k Px/(c/φ) and w=k Px/Ro, where w is a crack width in the time, k is a proportional factor, Px is the corrosion penetration in the time, c/φ is the concrete cover/diameter relation and Ro is the original radius of the bar.

Keywords

Cracking, Engineering, Civil, Corrosion rate, Engineering, Multidisciplinary, Pitting, Computer Science, Software Engineering, Remaining life, Velocidad de corrosión, Engineering, Marine, Corrosion, Engineering, Manufacturing, Engineering, Mechanical, Picadura, Corrosión, Engineering, Industrial, Durability., Grietas, Engineering, Ocean, Vida remanente, Engineering, Aerospace, Engineering, Biomedical, Durabilidad

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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