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Article: Correlating the Chloride Diffusion Coefficient and Pore Structure of Cement-Based Materials Using Modified Noncontact Electrical Resistivity Measurement

TitleCorrelating the Chloride Diffusion Coefficient and Pore Structure of Cement-Based Materials Using Modified Noncontact Electrical Resistivity Measurement
Authors
KeywordsChloride diffusion coefficient
Electrical resistivity
Formation factor
Low-field nuclear magnetic resonance (NMR)
Pore structure
Issue Date2019
PublisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/mt.html
Citation
Journal of Materials in Civil Engineering, 2019, v. 31 n. 3, article no. 04019006 How to Cite?
AbstractThe electrical resistivity of hardened cement-based materials was measured in this work by a modified noncontact electrical resistivity measurement (MN-CM). The resistivity was further processed to compute the chloride diffusion coefficient (D ρ ) using the Nernst-Einstein equation. Also, the rapid chloride migration test (RCM) was carried out to obtain the chloride migration coefficient (D RCM ), and the relationship between D ρ and D RCM has been established. The obtained D ρ was further correlated to the pore structure parameters characterized by low-field nuclear magnetic resonance (NMR) spectroscopy. The results show that the D RCM is more sensitive to the change of pore connectivity, while D ρ is more sensitive to the change of porosity. The D ρ is smaller than D RCM since it strictly follows the Nernst-Einstein equation while RCM neglects the other driving forces such as capillary sorption and concentration gradient. It is concluded that the proposed MN-CM can obtain the chloride diffusion coefficient of saturated cement-based materials in a quick, stable, and reliable manner.
Persistent Identifierhttp://hdl.handle.net/10722/269420
ISSN
2017 Impact Factor: 1.763
2015 SCImago Journal Rankings: 0.965
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHe, R-
dc.contributor.authorYe, H-
dc.contributor.authorMa, H-
dc.contributor.authorFu, C-
dc.contributor.authorJin, X-
dc.contributor.authorLi, Z-
dc.date.accessioned2019-04-24T08:07:20Z-
dc.date.available2019-04-24T08:07:20Z-
dc.date.issued2019-
dc.identifier.citationJournal of Materials in Civil Engineering, 2019, v. 31 n. 3, article no. 04019006-
dc.identifier.issn0899-1561-
dc.identifier.urihttp://hdl.handle.net/10722/269420-
dc.description.abstractThe electrical resistivity of hardened cement-based materials was measured in this work by a modified noncontact electrical resistivity measurement (MN-CM). The resistivity was further processed to compute the chloride diffusion coefficient (D ρ ) using the Nernst-Einstein equation. Also, the rapid chloride migration test (RCM) was carried out to obtain the chloride migration coefficient (D RCM ), and the relationship between D ρ and D RCM has been established. The obtained D ρ was further correlated to the pore structure parameters characterized by low-field nuclear magnetic resonance (NMR) spectroscopy. The results show that the D RCM is more sensitive to the change of pore connectivity, while D ρ is more sensitive to the change of porosity. The D ρ is smaller than D RCM since it strictly follows the Nernst-Einstein equation while RCM neglects the other driving forces such as capillary sorption and concentration gradient. It is concluded that the proposed MN-CM can obtain the chloride diffusion coefficient of saturated cement-based materials in a quick, stable, and reliable manner.-
dc.languageeng-
dc.publisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/mt.html-
dc.relation.ispartofJournal of Materials in Civil Engineering-
dc.rightsThis material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0002616.-
dc.subjectChloride diffusion coefficient-
dc.subjectElectrical resistivity-
dc.subjectFormation factor-
dc.subjectLow-field nuclear magnetic resonance (NMR)-
dc.subjectPore structure-
dc.titleCorrelating the Chloride Diffusion Coefficient and Pore Structure of Cement-Based Materials Using Modified Noncontact Electrical Resistivity Measurement-
dc.typeArticle-
dc.identifier.emailYe, H: hlye@hku.hk-
dc.identifier.authorityYe, H=rp02379-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1061/(ASCE)MT.1943-5533.0002616-
dc.identifier.scopuseid_2-s2.0-85059898108-
dc.identifier.hkuros297482-
dc.identifier.volume31-
dc.identifier.issue3-
dc.identifier.spagearticle no. 04019006-
dc.identifier.epagearticle no. 04019006-
dc.identifier.isiWOS:000457288400012-
dc.publisher.placeUnited States-

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