Abstract
It has been reported in a previous study [Cem. Concr. Res. 29 (1999) 377; Cem. Concr. Res. 33 (2003) 197] that when a low-lime fly ash is introduced as a cementitious component, there are significant changes in the electrical response of the system, most notably, an enhancement in dielectric constant and the emergence of a plateau region in the complex plane. The changes in electrical behaviour were attributed to the spherical nature of the fly-ash particle, resulting in an enhancement in the double-layer polarization effects on the particle surface. In this paper, data are presented for three low-lime ashes, each displaying differences in their electrical behaviour. Through a systematic series of tests, a new interpretation for the origin of the characteristic electrical response is presented. © 2004 Elsevier Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 1837-1843 |
Number of pages | 7 |
Journal | Cement and Concrete Research |
Volume | 34 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2004 |
Keywords
- Characterization
- Electrical properties
- Fly ash
- Loss on ignition
- Mortar