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Experimental and Computer Simulation Results for the Electrical Conductivity of Portland Cement Paste

Published online by Cambridge University Press:  15 February 2011

B.J. Christensen ,
T.O. Mason ,
H.M. Jennings ,
D.P. Bentz  and
E.J. Garboczi
B.J. Christensen
Affiliation:
Northwestern University, Department of Materials Science, Evanston, IL
T.O. Mason
Affiliation:
Northwestern University, Department of Materials Science, Evanston, IL
H.M. Jennings
Affiliation:
Northwestern University, Department of Materials Science, Evanston, IL
D.P. Bentz
Affiliation:
National Institute of Standards and Technology, Building Materials Division, Gaithersburg, MD.
E.J. Garboczi
Affiliation:
National Institute of Standards and Technology, Building Materials Division, Gaithersburg, MD.
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Abstract

The electrical conductivity of portland cement paste is an important transport property, especially since, when properly normalized by the pore fluid conductivity, it is equivalent to the normalized ionic diffusivity of the material via the Nernst-Einstein relation. This paper presents experimental and computer simulation results for σ/σo, where σ is the conductivity of the bulk paste as determined from impedance spectroscopy, and σo is the conductivity of the pore solution. Comparison between simulation and experiment is carried out for an 0.5 water:cement ratio white cement paste as a function of capillary porosity. The quantitative agreement between theory and experiment is reasonable.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 245: Symposium K – Advanced Cementitious Systems: Mechanisms and Properties , 1991 , 259
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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