Numerical Simulation of ChlorideI on Ingression in Mortar incorporating the Effect of ITZ using an integrated COMSOL-IPHREEQC Framework

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dc.contributor.authorKrishnya, S.
dc.contributor.authorElakneswaran, Y.
dc.contributor.authorYoda, Y.
dc.contributor.authorKitagaki, R.
dc.date.accessioned2023-12-28T07:22:39Z
dc.date.available2023-12-28T07:22:39Z
dc.date.issued2023
dc.description.abstractThepredictionofchlorideingressionincement-basedmaterialhas gainedagreatdealofinterestamongresearchersasitcauseslong-termstructuraldamageinbuildingsbychloride-inducedreinforcementcorrosion.TheCl− diffusioninmortarisinfluencedbyinternalfactorsincludingpore-structureand hydrateswhicharedeterminedbyclinkerproperties,mixturerecipe,andcuring conditionsandexposureconditions.TheCl−penetrationinmortarleadstothe modificationofthemicrostructureandpore-solutionduetothedisequilibriumof thehydrates-poresolutionsystem.Consideringthecomplexityoftheprocessby incorporatingallaforementionedfactorsandinteractionofCl−withhydrates, anewmodelishereinproposedforpredictingthemicrostructureofthemortar duringtheCl−diffusion.Inthiswork,themicrostructureofmortarisconsideredasathree-phasematerial:aggregates,interfacialtransitionzone(ITZ)and bulkpaste,andITZisrealisticallyconsideredashighW/Cpastecomparedto theinitialW/C.ThedevelopedCOMSOL-IPHREEQCmodelinvolveshydration modelforcalculatingthedissolutionofclinkerinbulkpasteandITZ,thermodynamicmodelincludingthesurfacecomplexationmodeltopredictthehydrates andtheCl−adsorptionbyhydrates,homogenizationapproachtocomputethe averagehydrates,porosity,poresolutioncompositionanddiffusionparametersof themortarandCOMSOLMultiphysicstoperformthetransportationcalculation. Thepredictedresultsarevalidatedwithexperimentalresultsavailableintheliteraturestoverifythereliabilityoftheproposedmodel.TheeffectofITZonthe penetrationofCl−isalsoassessedinthiswork.en_US
dc.identifier.doihttps://doi.org/10.1007/978-3-031-33211-1_62en_US
dc.identifier.urihttp://repo.lib.jfn.ac.lk/ujrr/handle/123456789/10008
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectChloride ion diffusionen_US
dc.subjectHydration productsen_US
dc.subjectInterfacial transition zoneen_US
dc.subjectPorosityen_US
dc.subjectCOMSOL-IPHREEQCen_US
dc.titleNumerical Simulation of ChlorideI on Ingression in Mortar incorporating the Effect of ITZ using an integrated COMSOL-IPHREEQC Frameworken_US
dc.typeArticleen_US

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