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Impedance spectroscopy study of hardened Portland cement paste
In this paper, the differential impedance analysis (DIA) has been applied to the study of the dielectric properties of hardened Portland cement paste. Two time constants are found in the impedance spectra obtained in the frequency region form 100 kHz to 15 MHz. One time constant has been attributed to the solid matrix and the other one to the liquid phase filling the pores. The effect of the cement paste-electrodes interface has been quantified using two different experimental set-ups. Measurements using direct contact between electrodes and cement paste have been compared with measurements using an air gap technique in which the specimen "floats" between the electrodes. The two referred time constants have been found in both types of measurements. The influence of drying on the dielectric parameters is also studied.
Impedance spectroscopy study of hardened Portland cement paste
In this paper, the differential impedance analysis (DIA) has been applied to the study of the dielectric properties of hardened Portland cement paste. Two time constants are found in the impedance spectra obtained in the frequency region form 100 kHz to 15 MHz. One time constant has been attributed to the solid matrix and the other one to the liquid phase filling the pores. The effect of the cement paste-electrodes interface has been quantified using two different experimental set-ups. Measurements using direct contact between electrodes and cement paste have been compared with measurements using an air gap technique in which the specimen "floats" between the electrodes. The two referred time constants have been found in both types of measurements. The influence of drying on the dielectric parameters is also studied.
Impedance spectroscopy study of hardened Portland cement paste
Cabeza, M. (author) / Merino, P. (author) / Miranda, A. (author) / Novoa, X.R. (author) / Sanchez, I. (author)
Cement and Concrete Research ; 32 ; 881-891
2002
11 Seiten, 25 Quellen
Article (Journal)
English
Impedance spectroscopy study of hardened Portland cement paste
| British Library Online Contents | 2002
Impedance spectroscopy study of hardened Portland cement paste
| Online Contents | 2002
Studies of physical properties of hardened Portland cement paste
| Engineering Index Backfile | 1947
The flow of water in hardened Portland cement paste
| TIBKAT | 1959