Title of article
Chemo-mechanicalcouplingbehaviourofleachedconcrete:PartII:ModellingOriginalResearchArticle
Author/Authors
V.H.Nguyen، نويسنده , , B.Nedjar، نويسنده , , J.M.Torrenti، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
8
From page
2090
To page
2097
Abstract
Thepaperisconcernedwithacoupledchemo-mechanicalmodeldescribingtheinteractionbetweenthecalciumleachingandthemechanicaldamageinconcretematerials.Ontheonehand,thephenomenologicalchemistryisdescribedbythenowadayswell-knownsimplifiedcalciumleachingapproach.Itisbasedonthedissolution–diffusionprocesstogetherwiththechemicalequilibriumrelatingthecalciumconcentrationofthesolidʹsskeletonandthecalciumintheporesolution.Forconcrete,ahomogenizationapproachusingasymptoticexpansionsisusedtotakeintoaccounttheinfluenceofthepresenceoftheaggregatesleadingtoanequivalenthomogeneousmedium.Ontheotherhand,thecontinuumdamagemechanicsisusedtodescribethemechanicaldegradationofconcrete.Themodellingaccountsforthefactthatconcretebecomesmoreandmoreductileastheleachingprocessgrows.Themodelalsopredictstheinelasticirreversibledeformationasdamageevolves.Thegrowthofinelasticstrainsobservedduringthemechanicaltestsisdescribedbymeansofanelastoplastic-likemodel.Thecouplednonlinearproblemathandisaddressedwithinthecontextofthefiniteelementmethod.Andfinally,numericalsimulationsarecomparedwiththeexperimentalresultsoffirstpartofthiswork.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2007
Journal title
Nuclear Engineering and Design Eslah
Record number
941376
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