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Effect of the gypsum state in industrial cements on the action of superplasticizers

✍ Scribed by F. Basile; S. Biagini; G. Ferrari; M. Collepardi

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
371 KB
Volume
17
Category
Article
ISSN
0008-8846

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✦ Synopsis

The reduction in mixing water of the concrete, caused by the addition of a superplasticizer, depends also on the type of cement used. Superplasticizer based on naphthalene sulfonated polymer acts much more effectively on cement containing gypsum dihydrate than on that containing calcium sulfate hemihydrate. Moreover, an inprovement of the superplasticizer quality caused by ultrafiltration of the polymer, is more effective on the cement containing gypsum than on that with hemihydrate.

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