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A Comparison of the Pore Structure of Cement and Fly Ash/Cement Mortars Made with Sea Water and Fresh Water

Published online by Cambridge University Press:  25 February 2011

B. K. Marsh ,
R. C. Joshi  and
A. Balasundaram
B. K. Marsh
Affiliation:
Calgary Fly Ash Research Group, Dept. of Civil Engineering, University of Calgary, Calgary, Alberta, Canada, T2N 1N4.
R. C. Joshi
Affiliation:
Calgary Fly Ash Research Group, Dept. of Civil Engineering, University of Calgary, Calgary, Alberta, Canada, T2N 1N4.
A. Balasundaram
Affiliation:
Calgary Fly Ash Research Group, Dept. of Civil Engineering, University of Calgary, Calgary, Alberta, Canada, T2N 1N4.
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Abstract

Pore structures of portland and blended cement mortars prepared with sea water were assessed by mercury intrusion porosimetry. Comparison is made with similar mortars made with fresh water. Mortars were made using cement containing 0%, 25% or 50% (by volume) of one of two Alberta fly ashes. They were tested after 90 days of continuous immersion in sea water at 5°C or 20° C. Results show that the mortars made with sea water generally contained a much higher volume of fine pores although the porosity was, in some cases, greater than that of mortars made with fresh water. Nevertheless, the volume of larger pores was lower in the mortars made with sea water. The pore structure of the various mortars is discussed in relation to potential durability.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 85: Symposium M – Microstructural Development During Hydration of Cement , 1986 , 61
Copyright
Copyright © Materials Research Society 1987

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References

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