Abstract
DURING an investigation of the retardation of setting in Portland cement pastes by a series of sugars, the disaccharide αα-trehalose was found to possess only weak retarding properties, while all the other sugars studied were powerful set-retarding agents. The reason for the distinctive behaviour of αα-trehalose may help to explain the mechanisms by which organic materials retard the setting reactions in the Portland cement–water system.
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References
Bruere, G. M., Nature, 199, 32 (1963).
Hansen, W. C., Proc. Third Int. Symp. on the Chemistry of Cement, London (1952).
Hansen, W. C., Amer. Soc. Test. Mat. Special Technical Publication No. 266, 3 (1960).
Steinour, H. H., Amer. Soc. Test. Mat. Special Technical Publication No. 266, 25 (1960).
Taplin, J. H., Proc. Fourth Int. Symp. on the Chemistry of Cement, Washington (1960).
Sowden, J. C., Adv. in Carbohydrate Chem., 12, 35 (1957).
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BRUERE, G. Set-retarding Effects of Sugars in Portland Cement Pastes. Nature 212, 502–503 (1966). https://doi.org/10.1038/212502a0
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DOI: https://doi.org/10.1038/212502a0
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