Electrochemical impedance interpretation of the carbonation behavior for fly ash-slag-cement materials

Biqin Dong; Qiwen Qiu; Jiaqi Xiang; Canjie Huang; Hongfang Sun; Feng Xing; Wei Liu

doi:10.1016/j.conbuildmat.2015.05.066

Electrochemical impedance interpretation of the carbonation behavior for fly ash-slag-cement materials

Biqin Dong, Qiwen Qiu, Jiaqi Xiang, Canjie Huang, Hongfang Sun, Feng Xing, Wei Liu

Department of Architecture and Civil Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

52 Citations (Scopus)

Abstract

In this paper, a new electrochemical model was adopted to study the carbonation behavior of fly ash-slag-cement materials. For a range of time spans, the parameters fitted from the equivalent circuit model were obtained by electrochemical impedance spectroscopy (EIS) measurements. By means of triangular contour plots, correlations in the time evolution of isograms of both the model parameter and carbonation depth of fly ash-slag-cement materials were analyzed. The results indicate that carbonation may also play a major role in increasing the impedance arc and the model parameters. The amount of mineral admixture becomes decisive for the variations of impedance spectra, model parameter and carbonation depth. The experimental results show that carbonation depth of fly ash-slag-cement materials is quantitatively related to the increment of the model parameter (R_ct1). On the contour map, the trends of carbonation depth are correlated to the variation in the increment of R_ct1. As a result, it is possible to predict the carbonation depth of fly ash-slag-cement materials with any fly ash and/or slag contents. © 2015 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	933-942
Journal	Construction and Building Materials
Volume	93
DOIs	https://doi.org/10.1016/j.conbuildmat.2015.05.066
Publication status	Published - 29 Jul 2015

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

The authors would like to acknowledge financial support provided by the National Key Basic Research Program funded by MOST (Project No. 2011CB013600; Issue No. 2011CB013604) and the National Natural Science Foundation of China (No. 51120185002/51272160/U1301241 ); Natural Science Foundation of Guangdong Province (No. S2013010013089 ) and the Collaborative Innovation Center for Advanced Civil Engineering Materials , Nanjing, P.R. China.

Research Keywords

Carbonation
Carbonation depth prediction
Electrochemical impedance
Equivalent circuit model
Fly ash-slag-cement materials
Triangular contour

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title = "Electrochemical impedance interpretation of the carbonation behavior for fly ash-slag-cement materials",

abstract = "In this paper, a new electrochemical model was adopted to study the carbonation behavior of fly ash-slag-cement materials. For a range of time spans, the parameters fitted from the equivalent circuit model were obtained by electrochemical impedance spectroscopy (EIS) measurements. By means of triangular contour plots, correlations in the time evolution of isograms of both the model parameter and carbonation depth of fly ash-slag-cement materials were analyzed. The results indicate that carbonation may also play a major role in increasing the impedance arc and the model parameters. The amount of mineral admixture becomes decisive for the variations of impedance spectra, model parameter and carbonation depth. The experimental results show that carbonation depth of fly ash-slag-cement materials is quantitatively related to the increment of the model parameter (Rct1). On the contour map, the trends of carbonation depth are correlated to the variation in the increment of Rct1. As a result, it is possible to predict the carbonation depth of fly ash-slag-cement materials with any fly ash and/or slag contents. {\textcopyright} 2015 Elsevier Ltd. All rights reserved.",

keywords = "Carbonation, Carbonation depth prediction, Electrochemical impedance, Equivalent circuit model, Fly ash-slag-cement materials, Triangular contour",

author = "Biqin Dong and Qiwen Qiu and Jiaqi Xiang and Canjie Huang and Hongfang Sun and Feng Xing and Wei Liu",

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T1 - Electrochemical impedance interpretation of the carbonation behavior for fly ash-slag-cement materials

AU - Dong, Biqin

AU - Qiu, Qiwen

AU - Xiang, Jiaqi

AU - Huang, Canjie

AU - Sun, Hongfang

AU - Xing, Feng

AU - Liu, Wei

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

PY - 2015/7/29

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N2 - In this paper, a new electrochemical model was adopted to study the carbonation behavior of fly ash-slag-cement materials. For a range of time spans, the parameters fitted from the equivalent circuit model were obtained by electrochemical impedance spectroscopy (EIS) measurements. By means of triangular contour plots, correlations in the time evolution of isograms of both the model parameter and carbonation depth of fly ash-slag-cement materials were analyzed. The results indicate that carbonation may also play a major role in increasing the impedance arc and the model parameters. The amount of mineral admixture becomes decisive for the variations of impedance spectra, model parameter and carbonation depth. The experimental results show that carbonation depth of fly ash-slag-cement materials is quantitatively related to the increment of the model parameter (Rct1). On the contour map, the trends of carbonation depth are correlated to the variation in the increment of Rct1. As a result, it is possible to predict the carbonation depth of fly ash-slag-cement materials with any fly ash and/or slag contents. © 2015 Elsevier Ltd. All rights reserved.

AB - In this paper, a new electrochemical model was adopted to study the carbonation behavior of fly ash-slag-cement materials. For a range of time spans, the parameters fitted from the equivalent circuit model were obtained by electrochemical impedance spectroscopy (EIS) measurements. By means of triangular contour plots, correlations in the time evolution of isograms of both the model parameter and carbonation depth of fly ash-slag-cement materials were analyzed. The results indicate that carbonation may also play a major role in increasing the impedance arc and the model parameters. The amount of mineral admixture becomes decisive for the variations of impedance spectra, model parameter and carbonation depth. The experimental results show that carbonation depth of fly ash-slag-cement materials is quantitatively related to the increment of the model parameter (Rct1). On the contour map, the trends of carbonation depth are correlated to the variation in the increment of Rct1. As a result, it is possible to predict the carbonation depth of fly ash-slag-cement materials with any fly ash and/or slag contents. © 2015 Elsevier Ltd. All rights reserved.

KW - Carbonation

KW - Carbonation depth prediction

KW - Electrochemical impedance

KW - Equivalent circuit model

KW - Fly ash-slag-cement materials

KW - Triangular contour

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DO - 10.1016/j.conbuildmat.2015.05.066

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SN - 0950-0618

VL - 93

SP - 933

EP - 942

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Electrochemical impedance interpretation of the carbonation behavior for fly ash-slag-cement materials

Abstract

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Research Keywords

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