Abstract
Laboratory experiments disclose that syngenite CaK2(S04)2·H20 forms rapidly from mixtures of gypsum and K2SO4 only at high relative humidities, ≥ 96% at 30°C. The concept of a critical humidity below which reaction essentially ceases is developed. The implications of syngenite formation for the freshness of stored cement are discussed: when syngenite is formed from gypsum, water is liberated which may cause prehydration of the cement phases.
Original language | English |
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Pages (from-to) | 93-96 |
Number of pages | 4 |
Journal | Advances in Cement Research |
Volume | 5 |
Issue number | 19 |
DOIs |
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Publication status | Published - 1 Jul 1993 |