Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-18T15:12:19.741Z Has data issue: false hasContentIssue false

Microstructural Development in Pore Reduced Cement (PRC)

Published online by Cambridge University Press:  15 February 2011

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.
Get access

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.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Macphee, D.E., ‘PRC - Pore Reduced Cement: High Density Cement Pastes Following Fluid Extraction’, Advances in Cements Research, 3, (12), 135142, (1990).10.1680/adcr.1990.3.12.135CrossRefGoogle Scholar
2. Roy, D.M. and Gouda, G.R., ‘High Strength Generation in Cement Pastes’, Cern. Concr. Res., 3, 807–20, (1973).10.1016/0008-8846(73)90013-6CrossRefGoogle Scholar
3. Roy, D.M., Gouda, G.M. and Bobrowsky, A., ‘Very High Strength Cement Pastes prepared by hot pressing and other high pressure techniques’, Cern. Concr. Res., 2, 349–66, (1972).10.1016/0008-8846(72)90075-0CrossRefGoogle Scholar
4. Roy, D.M. personal communication, (1990).Google Scholar
5. Altner, W., Munse, M. and Waldenburger, K., ‘Material Oriented and Process Engineering Investigations relating to high strength cast stone products, Heft, 12, 4956, (1988).Google Scholar
6. STANDARDS ASSOCIATION OF AUSTRALIA Australian Standard AS1315 SAA Portland Cement, 1982.Google Scholar
7. Barneyback, R.S. and Diamond, S., ‘Expression and Analysis of pore fluids from hardened cement pastes and mortars’, Cement and Concrete Research, 11, 279–85, (1981).10.1016/0008-8846(81)90069-7CrossRefGoogle Scholar
8. Gregg, S.J. and Sing, K.S.W., ‘Adsorption, Surface Area and Porosity’, Second Edition, p41, (Academic Press, 1982).Google Scholar
9. Mindess, S. and Young, J.F., ‘Concrete’, p99, (Prentice-Hall Inc., New Jersey, 1981).Google Scholar
10. Groves, G.W., Le Sueur, P.J. and Sinclair, W., ‘Transmission Electron Microscopy and Microanalytical Studies of Ion-beam-thinned Sections of Tricalcium Silicate Paste‘, J. Am. Ceram. Soc., 69, (4), 353–6, (1986).10.1111/j.1151-2916.1986.tb04746.xCrossRefGoogle Scholar
11. Sinclair, W. and Groves, G.W., ‘High Strength Cement Pastes. Part 1. Microstructure’, J. Mater. Sci., 20, 2846–52, (1985).10.1007/BF00553047CrossRefGoogle Scholar
12. Macphee, D.E., Lachowski, E.E. and Glasser, F.P., ‘Polymerisation Effects in C-S-H: Implications for Portland cement hydration’, Advances in Cement Research, 1, (3), 131–7, (1988).10.1680/1988.1.3.131CrossRefGoogle Scholar