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Electrical Conductivity and Chloride Ingress in Hardened Cement Paste

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Title: Electrical Conductivity and Chloride Ingress in Hardened Cement Paste
Authors: Kurumisawa, Kiyofumi Browse this author →KAKEN DB
Nawa, Toyoharu Browse this author →KAKEN DB
Issue Date: Mar-2016
Publisher: Japan Concrete Institute
Journal Title: Journal of advanced concrete technology
Volume: 14
Issue: 3
Start Page: 87
End Page: 94
Publisher DOI: 10.3151/jact.14.87
Abstract: The transport properties of hardened cement paste (HCP) have been investigated in many studies; the AC impedance method (ACI) is a non-destructive technique employed for this purpose and has been used in investigations of the electrical characteristic and mass transport properties of HCP. However, there are relatively fewer studies investigating chloride ingress in HCP and using the ACI. In this study, the relationship between the electrical conductivity measured by the ACI and chloride ingress was investigated. Backscattered electron image analysis and mercury intrusion porosimetry and water porosity were used to measure the pore structure of HCP, and the chloride ingress depth was measured by an electron probe microanalyzer. There was a high correlation between the porosity and conductivity and between the conductivity and diffusion coefficient of the chloride ions in HCP. This implies that the diffusion coefficient of chloride ions could be estimated by the conductivity measurements.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 胡桃澤 清文

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