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

Krishnya, S.; Elakneswaran, Y.; Yoda, Y.; Kitagaki, R.

dc.contributor.author	Krishnya, S.
dc.contributor.author	Elakneswaran, Y.
dc.contributor.author	Yoda, Y.
dc.contributor.author	Kitagaki, R.
dc.date.accessioned	2023-12-28T07:22:39Z
dc.date.available	2023-12-28T07:22:39Z
dc.date.issued	2023
dc.identifier.uri	http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/10008
dc.description.abstract	Thepredictionofchlorideingressionincement-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.language.iso	en	en_US
dc.publisher	Springer	en_US
dc.subject	Chloride ion diffusion	en_US
dc.subject	Hydration products	en_US
dc.subject	Interfacial transition zone	en_US
dc.subject	Porosity	en_US
dc.subject	COMSOL-IPHREEQC	en_US
dc.title	Numerical Simulation of ChlorideI on Ingression in Mortar incorporating the Effect of ITZ using an integrated COMSOL-IPHREEQC Framework	en_US
dc.type	Article	en_US
dc.identifier.doi	https://doi.org/10.1007/978-3-031-33211-1_62	en_US