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dc.contributor.authorYuan, W-B
dc.contributor.authorMao, L
dc.contributor.authorLi, L-Y
dc.date.accessioned2022-11-03T13:39:13Z
dc.date.issued2023-01-15
dc.identifier.issn1879-1026
dc.identifier.issn1879-1026
dc.identifier.other159197
dc.identifier.urihttp://hdl.handle.net/10026.1/19834
dc.description.abstract

This paper presents an analytical approach to calculate the effective diffusion coefficient of chlorides in concrete with both natural and recycled concrete aggregates. In the approach the concrete is treated as a composite consisting of three phases, namely mortar, natural aggregate plus interfacial transition zone, and recycled concrete aggregate plus interfacial transition zone. The effective diffusion coefficient of chlorides in the composite is calculated through two steps. The first step is to calculate the effective diffusion coefficients of chlorides in the natural aggregate plus interfacial transition zone and in the recycled concrete aggregate plus interfacial transition zone by using multilayer spherical approximation, the results of which provide the information about the quality of recycled concrete aggregate in terms of chloride penetration resistance. The second step is to calculate the effective diffusion coefficient of chlorides in the three-phase concrete composite by using effective medium approximation, the results of which provide the information about the influence of recycled concrete aggregate on the diffusivity of recycled aggregate concrete. The analytical expression of the effective diffusion coefficient is derived and carefully compared with the results obtained from both the experiments and numerical simulations, which demonstrates that the present analytical model is rational and reliable. The analytical expression presented can be used to predict the service life of recycled aggregate concrete exposed to chloride environment.

dc.format.extent159197-159197
dc.format.mediumPrint-Electronic
dc.languageen
dc.language.isoeng
dc.publisherElsevier
dc.subjectChloride
dc.subjectDiffusion coefficient
dc.subjectRecycled concrete aggregate
dc.subjectModelling
dc.subjectConcrete
dc.titleA two-step approach for calculating chloride diffusion coefficient in concrete with both natural and recycled concrete aggregates
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/36206906
plymouth.issue2
plymouth.volume856
plymouth.publisher-urlhttp://dx.doi.org/10.1016/j.scitotenv.2022.159197
plymouth.publication-statusPublished
plymouth.journalScience of the Total Environment
dc.identifier.doi10.1016/j.scitotenv.2022.159197
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
dc.publisher.placeNetherlands
dcterms.dateAccepted2022-09-29
dc.rights.embargodate2022-11-4
dc.identifier.eissn1879-1026
dc.rights.embargoperiodNot known
rioxxterms.funderEuropean Commission
rioxxterms.identifier.projectTailor-made Recycled Aggregate Concretes
rioxxterms.versionofrecord10.1016/j.scitotenv.2022.159197
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2022-10-04
rioxxterms.typeJournal Article/Review
plymouth.funderTailor-made Recycled Aggregate Concretes::European Commission


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