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Influence of aluminates phases hydration in presence of calcium sulfate on silicates phases hydration : consequences on cements optimum sulfate

2012

The mechanical properties of hydrated cements need to be optimized according to the nature of cement products. Among the factors of optimization, the addition of calcium sulphate intended to regulate the reactivity of tricalcium aluminate (C3A), in quantity and quality in cement is an essential parameter.The advancement of knowledge on the mechanisms of hydration of each cement phase allows a study devoted entirely to the concept of optimum of sulphate. We studied simple system that we complicated and we studied the evolution of hydration, porosity and mechanical properties of cement at different age. The first system studied was the mixture C3S/gypsum, the objective was to determine whethe…

[SPI.OTHER]Engineering Sciences [physics]/OtherHemi-hydrateAvancement d’hydratation du C3S et C3A[ SPI.OTHER ] Engineering Sciences [physics]/Other[SPI.OTHER] Engineering Sciences [physics]/Other[ SDV.AEN ] Life Sciences [q-bio]/Food and NutritionGypseMechanical propertiesOptimum sulfatageGypsumPropriété microstructuraleC3A[SDV.AEN] Life Sciences [q-bio]/Food and NutritionCalcium sulphate[CHIM.OTHE] Chemical Sciences/OtherHydration advancement of C3S and C3APropriété mécanique[ CHIM.OTHE ] Chemical Sciences/OtherSulfate de calcium[CHIM.OTHE]Chemical Sciences/Other[SDV.AEN]Life Sciences [q-bio]/Food and NutritionOptimum sulphateC3SMicrostructural properties
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