Hydration of Tricalcium Silicate |
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| Authors: | MARIO COLLEPARDI LUIGI MASSIDDA |
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| Affiliation: | Institute of Applied and Industrial Chemistry, University of Rome, Rome, Italy;Institute of Applied Chemistry and Metallurgy, University of Cagliari, Cagliari, Italy |
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| Abstract: | The kinetics of paste, bottle, and ball-mill hydration of 3CaO SiO2 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 SiO2 is hydrated in an excess of H2O, 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 SiO2 particles. Electrolytes always accelerate and alcohols retard the reaction rate. Experimental results are discussed with reference to modern theories of the 3CaO SiO2 hydration mechanism. |
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