Nonlinear formulation based on FEM, Mazars damage criterion and Fick's law applied to failure assessment of reinforced concrete structures subjected to chloride ingress and reinforcements corrosion

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorLiberati, Elyson A. P.
dc.creatorNogueira, Caio G.
dc.creatorLeonel, Edson D.
dc.creatorChateauneuf, Alaa
dc.date2015-03-18T15:53:26Z
dc.date2016-10-25T20:24:58Z
dc.date2015-03-18T15:53:26Z
dc.date2016-10-25T20:24:58Z
dc.date2014-11-01
dc.date.accessioned2017-04-06T07:03:25Z
dc.date.available2017-04-06T07:03:25Z
dc.identifierEngineering Failure Analysis. Oxford: Pergamon-elsevier Science Ltd, v. 46, p. 247-268, 2014.
dc.identifier1350-6307
dc.identifierhttp://hdl.handle.net/11449/116515
dc.identifierhttp://acervodigital.unesp.br/handle/11449/116515
dc.identifier10.1016/j.engfailanal.2014.09.006
dc.identifierWOS:000344011200022
dc.identifierhttp://dx.doi.org/10.1016/j.engfailanal.2014.09.006
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/927162
dc.descriptionStructural durability is an important design criterion, which must be assessed for every type of structure. In this regard, especial attention must be addressed to the durability of reinforced concrete (RC) structures. When RC structures are located in aggressive environments, its durability is strongly reduced by physical/chemical/mechanical processes that trigger the corrosion of reinforcements. Among these processes, the diffusion of chlorides is recognized as one of major responsible of corrosion phenomenon start. To accurate modelling the corrosion of reinforcements and to assess the durability of RC structures, a mechanical model that accounts realistically for both concrete and steel mechanical behaviour must be considered. In this context, this study presents a numerical nonlinear formulation based on the finite element method applied to structural analysis of RC structures subjected to chloride penetration and reinforcements corrosion. The physical nonlinearity of concrete is described by Mazars damage model whereas for reinforcements elastoplastic criteria are adopted. The steel loss along time due to corrosion is modelled using an empirical approach presented in literature and the chloride concentration growth along structural cover is represented by Fick's law. The proposed model is applied to analysis of bended structures. The results obtained by the proposed numerical approach are compared to responses available in literature in order to illustrate the evolution of structural resistant load after corrosion start. (C) 2014 Elsevier Ltd. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationEngineering Failure Analysis
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCorrosion of reinforcements
dc.subjectReinforced concrete
dc.subjectFick's law
dc.subjectMazars damage criterion
dc.subjectFinite element method
dc.titleNonlinear formulation based on FEM, Mazars damage criterion and Fick's law applied to failure assessment of reinforced concrete structures subjected to chloride ingress and reinforcements corrosion
dc.typeOtro


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