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Hydration Characteristics and Morphological Features of Concretes from Structures in Australia, England and the United States

Published online by Cambridge University Press:  21 February 2011

Daksh Baweja ,
Harold Roper ,
Jose G. Cabrera  and
David J. Cook
Daksh Baweja
Affiliation:
National Building Technology Centre, P.O. Box 30, Chatswood, N.S.W. 2067, Australia
Harold Roper
Affiliation:
School of Civil and Mining Engineering, University of Sydney, Redfern, N.S.W. 2006, Australia
Jose G. Cabrera
Affiliation:
Department of Civil Engineering, University of Leeds, U.K.
David J. Cook
Affiliation:
National Building Technology Centre, P.O. Box 30, Chatswood, N.S.W. 2067, Australia
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Abstract

Scanning electron microscope studies were carried out on concretes obtained from structures in Australia, England and the United States as part of an assessment of their durability performances. The ages of the structures ranged from nine to thirty years. All structures contained fly ash concretes in some sections, and, in a few cases, direct comparison between these concretes and ordinary portland cement (OPC) concretes was possible. Water: cement ratios of the concretes varied from 0.44 to 0.90. The sources of fly ash were identified in each case. The structures chosen had a range of use classifications encompassing building, hydraulic structures, bridge structures, towers and foundations. Deterioration effects of concretes in some structures were more common than in others. Based on observations, conclusions were drawn on the morphological features and hydration characteristics of the concretes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 113: Symposium Q – Fly Ash and Coal Conversion By-Products IV , 1987 , 257
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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