Modelling of multi-species transport in concrete under the action of external electric field: Influence of the overpotential at electrode-electrolyte interfaces
dc.contributor.author | Mao, L-X | |
dc.contributor.author | Li, Long-yuan | |
dc.contributor.author | Kim, Boksun | |
dc.date.accessioned | 2022-01-23T09:05:19Z | |
dc.date.available | 2022-01-23T09:05:19Z | |
dc.date.issued | 2022-01-22 | |
dc.identifier.issn | 1572-6657 | |
dc.identifier.issn | 1873-2569 | |
dc.identifier.other | 116079 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/18610 | |
dc.description.abstract |
The application of external electrical field on concrete structures is widely used to protect it from chloride attack or to evaluate its resistance to chloride penetration in a short period. During these electrochemical processes, the polarization of electrodes placed inside and/or outside of concrete cannot be ignored. This study proposes a numerical model dealing with the mass transport and electrode polarizing process under an externally applied voltage, in which multi-species electromigration, time-varying overpotential and non-equilibrium binding are involved. The Tafel Equation is adopted to express the overpotential at electrode–electrolyte interfaces. The electro-potential boundary changing with overpotential is reset at each time step to obtain the accurate concentration distributions of ionic species. Additionally, benchmarks against third-party experiments are conducted to verify the reliability of the present model. The effects of externally applied voltage, Tafel parameters and initial ionic species concentration on the interaction of overpotential and chloride penetration are also quantitatively examined. The obtained results show that the potential difference between two concrete surfaces is always lower than that applied on electrodes due to the influence of polarization, which has a further impact on the temporal and spatial concentration distributions of ionic species in the pore solution of concrete. | |
dc.format.extent | 116079-116079 | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Elsevier BV | |
dc.subject | Chloride | |
dc.subject | Electrochemical process | |
dc.subject | Polarization | |
dc.subject | Multi-species electro-migration | |
dc.subject | Overpotential | |
dc.title | Modelling of multi-species transport in concrete under the action of external electric field: Influence of the overpotential at electrode-electrolyte interfaces | |
dc.type | journal-article | |
dc.type | Journal Article | |
plymouth.author-url | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000767855800005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008 | |
plymouth.volume | 907 | |
plymouth.publication-status | Published | |
plymouth.journal | Journal of Electroanalytical Chemistry | |
dc.identifier.doi | 10.1016/j.jelechem.2022.116079 | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA/UoA12 Engineering | |
plymouth.organisational-group | /Plymouth/Research Groups | |
plymouth.organisational-group | /Plymouth/Research Groups/Marine Institute | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
dcterms.dateAccepted | 2022-01-19 | |
dc.rights.embargodate | 2023-1-22 | |
dc.identifier.eissn | 1873-2569 | |
dc.rights.embargoperiod | Not known | |
rioxxterms.versionofrecord | 10.1016/j.jelechem.2022.116079 | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2022-01-22 | |
rioxxterms.type | Journal Article/Review |