On the formation of thaumasite CaSiO 3 ·CaSO 4 ·CaCO 3 ·15H 2 O: Part I
Source abstract
Abstract
Thaumasite from a geological source was dissolved in distilled water at 8°C. The ionic concentrations in solution were measured after equilibration and a solubility product was calculated. The corresponding Gibbs free energy for the formation of thaumasite from the constituting elements at 8°C was calculated to be −7638 kJ/mol from the solubility product. The obtained datum allows a simulation of the formation of thaumasite in concrete. Results of the simulation are presented in part II and compared to experimental observations in part III of this report.
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Research context
OpenAlex topics: Calcium Carbonate Crystallization and Inhibition · Chemical Synthesis and Characterization · Concrete and Cement Materials Research
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Affiliations
Finger Institute for Building Materials Science, Department of Civil Engineering, Bauhaus University Weimar, Coudraystraße 11, 99423 Weimar, Germany
References (15)
Show source-provided references
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