Retardation effect of superplasticizer on different cement fractions
✍ Scribed by Pierre-Claude Aïtcin; Shondeep L. Sarkar; M. Regourd; D. Volant
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 206 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0008-8846
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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 hemi
Blended cement pastes made of Portland cement and fine sand (known in Egypt as El-Karnak cement) were made using a water-cement ratio of 0.25 by weight. Three pastes containing admixture (water-soluble condensates) were also prepared using a water-cement ratio of 0.25 and condensate (superplasticize