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Microstructural Development in Pore Reduced Cement (PRC)

Published online by Cambridge University Press:  15 February 2011

D.E. Macphee,
E.E. Lachowski,
A.H. Taylor and
T.J. Brown
D.E. Macphee
Affiliation:
CSIRO Division of Building, Construction and Engineering,P.O. Box 56, Highett, Victoria 3190, Australia.
E.E. Lachowski
Affiliation:
Department of Chemistry, University of Aberdeen,Meston Walk, Old Aberdeen AB9 2UE, Scotland.
A.H. Taylor
Affiliation:
CSIRO Division of Building, Construction and Engineering,P.O. Box 56, Highett, Victoria 3190, Australia.
T.J. Brown
Affiliation:
CSIRO Division of Building, Construction and Engineering,P.O. Box 56, Highett, Victoria 3190, Australia.
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Abstract

Pore Reduced Cement (PRC) is a high density, high strength material which may have specialist use in the construction industry. It is produced by the high pressure processing of Ordinary Portland cement (OPC) pastes, or blends of OPC with certain supplementary cementing materials, such that effective water/cement ratios (w/c) are significantly reduced relative to those used for mixing. A previous paper [1] describes the mechanical properties of PRC (patent pending) during the early stages of product development and more recent data show that improved preparative techniques are leading to increasing densities and strengths. However, fundamental data on the microstructure, mineralogy and durability properties have not previously been reported. The present paper is directed towards the study of microstructural development in the closely compacted matrix using electron microscopy. Mineralogical and porosity data are also presented.

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References

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