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Electrical conductivity and phase composition of calcium aluminate cement containing air-cooled and water-cooled slag at 20, 40 and 60 degrees C
Faculty
Science
Year:
2005
Type of Publication:
Article
Pages:
1438-1446
Authors:
Heikal, M, Radwan, MM, Morsy, MS
DOI:
10.1016/j.cemconres.2004.09.027
Journal:
CEMENT AND CONCRETE RESEARCH PERGAMON-ELSEVIER SCIENCE LTD
Volume:
35
Research Area:
Construction \& Building Technology; Materials Science
ISSN
ISI:000229987300024
Keywords :
calcium aluminate cement, air-cooled slag, water-cooled slag, temperature, electrical properties and microstructure
Abstract:
Calcium aluminate cement (CAC) pastes containing Egyptian air-cooled slag (AS) or water-cooled slag (WS) were prepared using different amounts of slag, namely, 5, 10, 15, 20 and 25 mass\%. The pastes were prepared with deionized water using the required water of standard consistency to produce normal workability. The variations of electrical conductivity with the hydration time were measured at 20, 40 and 60 degrees C. The results demonstrate that electrical conductivity is a useful technique to study the change in the phase composition at different temperatures during the setting and hardening of calcium aluminate cement as well as reflecting the role of AS and WS, preventing the conversion occurring during the CAC hydration. (c) 2004 Elsevier Ltd. All rights reserved.
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