Artículo
Recycled aggregate concrete: Localized failure assessment in thermodynamically consistent non-local plasticity framework
Fecha de publicación:
01/2017
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Computers & Structures
ISSN:
0045-7949
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A gradient plasticity theory is extended to predict the mechanical failure behavior of concrete with recycled aggregates. A relevant feature of the novel constitutive formulation is its full consistency with the thermodynamic laws regarding hardening and softening response behaviors. The proposed model includes a formulation of a maximum strength surface which is dependent on the recycled aggregate content. While the hardening law is formulated in the framework of classical-local elastoplasticity, the post-peak behavior is described by means of a non-local gradient and fracture-energy-based law. Thereby, the gradient and fracture-energy characteristic lengths are described in terms of the acting confining pressure and the recycled aggregate content. The formulation of the proposed constitutive theory is complemented by the description of the associated localization indicator, based on the acoustic or localization tensor. Finally, numerical results are presented to demonstrate the predictive capabilities of the proposed model and the performance of the localization indicator for different critical stresses and recycled aggregate contents.
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Identificadores
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Citación
Ripani, Marianela; Etse, Jose Guillermo; Vrech, Sonia Mariel; Recycled aggregate concrete: Localized failure assessment in thermodynamically consistent non-local plasticity framework; Pergamon-Elsevier Science Ltd; Computers & Structures; 178; 1-2017; 47-57
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