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Cement as a thermoelectric material

Published online by Cambridge University Press:  31 January 2011

Sihai Wen  and
D. D. L. Chung
Sihai Wen
Affiliation:
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, New York 14260–4400
D. D. L. Chung
Affiliation:
Composite Materials Research Laboratory, State University of New York at Buffalo, Buffalo, New York 14260–4400
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Abstract

Cement pastes containing short steel fibers, which contribute to electron conduction, exhibit positive values (up to 68 μV/°C) of the absolute thermoelectric power. Cement pastes containing short carbon fibers, which contribute to hole conduction while the cement matrix contributes to electron conduction, exhibit negative or slightly positive values of the absolute thermoelectric power. The hole and electron contributions in carbon fiber reinforced cement paste are equal at the percolation threshold. Addition of either steel or carbon fibers to cement paste yields more reversibility and linearity in the variation of the Seebeck voltage with temperature difference (up to 65 °C).

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 12 , December 2000 , pp. 2844 - 2848
Copyright
Copyright © Materials Research Society 2000

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