Study of the size effect in a model to simulate concrete cracking due to rebar corrosion and comparison to accelerated corrosion tests

Sanz Merino, Beatriz; Planas Rosselló, Jaime y Sancho Aznal, José María (2010). Study of the size effect in a model to simulate concrete cracking due to rebar corrosion and comparison to accelerated corrosion tests. En: "IV European Conference on Computational Mechanics", 16/05/2010 - 21/05/2010, Paris, France.

Descripción

Título: Study of the size effect in a model to simulate concrete cracking due to rebar corrosion and comparison to accelerated corrosion tests
Autor/es:
  • Sanz Merino, Beatriz
  • Planas Rosselló, Jaime
  • Sancho Aznal, José María
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: IV European Conference on Computational Mechanics
Fechas del Evento: 16/05/2010 - 21/05/2010
Lugar del Evento: Paris, France
Título del Libro: Proceedings of the IV European Conference on Computational Mechanics
Fecha: 2010
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

An immediate consequence of the corrosion of reinforcement in concrete structures consists in the generation of an oxide layer at the steel surface which, due to the greater specific volume of the oxide with respect to the steel, induces internal pressure on the surrounding concrete and thus cracks the concrete cover [1, 3]. Focussing on the prediction of the mechanical effects of the oxide expansion, a numerical model to simulate the effect of the oxide layer was programmed, assuming that the oxide layer expansion is given at a any specified time [5]. The basic ingredient of such a model is an interface element with zero initial thickness that incorporates both the expansive and mechanical behaviors of the oxide, which is characterized by its ability to debond, with nearly free sliding (very small shear stiffness) and nearly free separation in tension (strongly reduced normal tension stiffness). It was called expansive joint element and it has already been presented in previous conferences. Concrete cracking is simulated by finite elements with embedded adaptable cohesive cracks [4] that follow the basic cohesive crack model proposed by Hillerborg

Más información

ID de Registro: 9111
Identificador DC: http://oa.upm.es/9111/
Identificador OAI: oai:oa.upm.es:9111
Depositado por: Memoria Investigacion
Depositado el: 18 Oct 2011 10:06
Ultima Modificación: 20 Abr 2016 17:39
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