Article ID Journal Published Year Pages File Type
1457549 Cement and Concrete Research 2008 5 Pages PDF
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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Physical Sciences and Engineering Engineering Industrial and Manufacturing Engineering
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