Modeling Steel Corrosion Failure in Reinforced Concrete by Cover Crack Width 3D FEM Analysis

Castorena González, José H. y Martin Díaz, Ulises y Gaona Tiburcio, Citlalli y Núñez Jaquez, Rosa E. y Almeraya Calderón, Facundo y Bastidas, José María y Bastidas, David M. (2020) Modeling Steel Corrosion Failure in Reinforced Concrete by Cover Crack Width 3D FEM Analysis. Frontiers in materials, 7. ISSN 2296-8016

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URL o página oficial: https://doi.org/10.3389/fmats.2020.00041

Resumen

A new predictive 3D FEM model is proposed using the corrosion damage function by measuring the concrete cover crack width, which is a function of the free concrete cover depth, the steel rebar diameter, the mechanical properties of the concrete, and the length of the anodic zone. A significant aspect to evaluate service lifetime conditions in corroded reinforced concrete structures (RCSs) is the concrete cover crack width. Surface cracks originate due to the pressure exerted by the volume expansion of the corrosion products and oxide layer formed on the rebars. In this work, concrete cover crack width on corroded RCS is analyzed by means of finite element method allowing a corrosion damage model to be proposed. The model obtained was used to find a theoretical relationship between the dissolved steel (corrosion process) and the concrete cover crack width. The results were validated using three experimental data sets from the literature: two corrosion case studies in natural environments and one work covering accelerated corrosion in laboratory test conditions. All the beams were exposed to the simultaneous action of flexural stresses and corrosion. A good correlation was observed between the model and the experimental results, thus supporting reliability of the analytical process and validation of the proposed corrosion damage model.

Tipo de elemento:

Article

Palabras claves no controlados:

Agrietamiento de la cubierta de concreto, Corrosión, Ancho de grieta, Modelo numérico, Método de elementos finitos (FEM)

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
Castorena González, José H.	NO ESPECIFICADO	NO ESPECIFICADO
Martin Díaz, Ulises	NO ESPECIFICADO	NO ESPECIFICADO
Gaona Tiburcio, Citlalli	NO ESPECIFICADO	orcid.org/0000-0001-9072-3090
Núñez Jaquez, Rosa E.	NO ESPECIFICADO	NO ESPECIFICADO
Almeraya Calderón, Facundo	NO ESPECIFICADO	orcid.org/0000-0002-3014-2814
Bastidas, José María	NO ESPECIFICADO	NO ESPECIFICADO
Bastidas, David M.	NO ESPECIFICADO	NO ESPECIFICADO