Please use this identifier to cite or link to this item:
http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/10008| Title: | Numerical Simulation of ChlorideI on Ingression in Mortar incorporating the Effect of ITZ using an integrated COMSOL-IPHREEQC Framework |
| Authors: | Krishnya, S. Elakneswaran, Y. Yoda, Y. Kitagaki, R. |
| Keywords: | Chloride ion diffusion;Hydration products;Interfacial transition zone;Porosity;COMSOL-IPHREEQC |
| Issue Date: | 2023 |
| Publisher: | Springer |
| 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. |
| URI: | http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/10008 |
| DOI: | https://doi.org/10.1007/978-3-031-33211-1_62 |
| Appears in Collections: | Civil Engineering |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Numerical Simulation of Chloride Ion Ingression in Mortar Incorporating the Effect of ITZ Using an Integrated C (1).pdf | 859.79 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.