Etude De La Réactivité Hydraulique D'un Ciment Composite Par Des Analyses Thermiques

This article presents the results of the study of the hydraulic reactivity of a composite cement, obtained by the inter-grinding of clinker with limestone, fly ash and gypsum. The study by conduction microcalorimetry, pH-metry, differential thermal analysis (DTA) and thermogravimetric analysis (TGA), showed an important hydraulic reactivity for the cements containing fly ash that results in the formation of a considerable quantity of C-S-H hydrates, due to the pozzolanic reaction between the glassy phases of fly ash and the hydroxide of calcium.