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Article: Correlating the Chloride Diffusion Coefficient and Pore Structure of Cement-Based Materials Using Modified Noncontact Electrical Resistivity Measurement
Title | Correlating the Chloride Diffusion Coefficient and Pore Structure of Cement-Based Materials Using Modified Noncontact Electrical Resistivity Measurement |
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Authors | |
Keywords | Chloride diffusion coefficient Electrical resistivity Formation factor Low-field nuclear magnetic resonance (NMR) Pore structure |
Issue Date | 2019 |
Publisher | American 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? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/269420 |
ISSN | 2021 Impact Factor: 3.651 2020 SCImago Journal Rankings: 1.090 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | He, R | - |
dc.contributor.author | Ye, H | - |
dc.contributor.author | Ma, H | - |
dc.contributor.author | Fu, C | - |
dc.contributor.author | Jin, X | - |
dc.contributor.author | Li, Z | - |
dc.date.accessioned | 2019-04-24T08:07:20Z | - |
dc.date.available | 2019-04-24T08:07:20Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Journal of Materials in Civil Engineering, 2019, v. 31 n. 3, article no. 04019006 | - |
dc.identifier.issn | 0899-1561 | - |
dc.identifier.uri | http://hdl.handle.net/10722/269420 | - |
dc.description.abstract | The 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.language | eng | - |
dc.publisher | American Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/mt.html | - |
dc.relation.ispartof | Journal of Materials in Civil Engineering | - |
dc.rights | This 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.subject | Chloride diffusion coefficient | - |
dc.subject | Electrical resistivity | - |
dc.subject | Formation factor | - |
dc.subject | Low-field nuclear magnetic resonance (NMR) | - |
dc.subject | Pore structure | - |
dc.title | Correlating the Chloride Diffusion Coefficient and Pore Structure of Cement-Based Materials Using Modified Noncontact Electrical Resistivity Measurement | - |
dc.type | Article | - |
dc.identifier.email | Ye, H: hlye@hku.hk | - |
dc.identifier.authority | Ye, H=rp02379 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1061/(ASCE)MT.1943-5533.0002616 | - |
dc.identifier.scopus | eid_2-s2.0-85059898108 | - |
dc.identifier.hkuros | 297482 | - |
dc.identifier.volume | 31 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | article no. 04019006 | - |
dc.identifier.epage | article no. 04019006 | - |
dc.identifier.isi | WOS:000457288400012 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0899-1561 | - |