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The kinetics of paste, bottle, and ball‐mill hydration of 3CaO SiO 2 and the effects of additions of electrolytes and alcohols were studied. Paste and bottle hydrations proceed through periods of induction, acceleration, and decay. If 3CaO SiO 2 is hydrated in an excess of H 2 O, as in bottle hydration, the reaction rate is lower than that for paste hydration. The ball‐mill hydration rate is much the highest and is controlled by the removal of the hydrate layer coating the 3CaO SiO 2 particles. Electrolytes always accelerate and alcohols retard the reaction rate. Experimental results are discussed with reference to modern theories of the 3CaO SiO 2 hydration mechanism.
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Collepardi et al. (1971) studied this question.
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