| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4918066 | Construction and Building Materials | 2017 | 10 Pages |
Abstract
The effect of the kind of calcium sulfate on the hydration of CSA cements was investigated. Thermal anhydrite, gypsum and a combination of anhydrite with gypsum were used at a constant molar ratio gypsum/ye'elimite of 0.8. With gypsum, ye'elimite dissolved faster than with anhydrite. When approximately 20Â mass-% of anhydrite were replaced by gypsum, ye'elimite dissolution was as fast as in the system with plain gypsum. The dissolution of anhydrite was accelerated as well by the presence of gypsum. Thus the replacement of a part of the anhydrite by gypsum is able to enhance hydration kinetics and both early and late compressive strength.
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Physical Sciences and Engineering
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Civil and Structural Engineering
Authors
Frank Winnefeld, Lukas H.J. Martin, Christian J. Müller, Barbara Lothenbach,