Abstract
The chemical composition of cement pore fluids is believed to be dominated at early stages of hydration by reactions of tricalcium aluminate solid solutions, gypsum or other potentially soluble sulphate and water. The changes in aqueous phase composition have been determined as a function of time and water/solid ratio until a steady state was achieved. Results obtained at 30°C furnish a self-consistent set of data. Release of Na from the solid solutions enhances the solubility of A l in the aqueous phase while strongly depressing the solubility of calcium.
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