Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1457549 | Cement and Concrete Research | 2008 | 5 Pages |
Abstract
Tricalcium silicate dissolution in the presence of orthophosphate ions was monitored by measuring the concentrations of calcium and silicate ions in dilute suspensions using a special dissolution cell coupled to an optical emission spectrometer. Results show that increasing adsorption of orthophosphate ions slows down the dissolution of Ca3SiO5 and that a calcium-phosphate precipitate may form at certain orthophosphate concentrations. These observations are correlated with results of calorimetric experiments carried out during the hydration of silica-rich cement pastes in the presence of the same salts.
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Authors
P. Bénard, S. Garrault, A. Nonat, C. Cau-dit-Coumes,