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- Author or Editor: V. S. Ramachandran x
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Journal of Thermal Analysis and Calorimetry
Author:
V. S. Ramachandran
Tricalcium silicate characteristically exhibits the most intense reversible transition at a temperature of about 915‡. The intensity of this effect can be used to estimate the amount of C3S in mixtures and to calculate the degree of hydration of C3S. Low sensitivity forδT up to 800‡ and higher sensitivity between 800‡ and 1000‡ enable estimation of both Ca(OH)2 and C3S. Interference effects at higher temperatures owing to decarbonation, recrystallization toΒ-wollastonite, and dehydration of the calcium silicate hydrate can be overcome by heating to 1000‡, cooling to 800‡, and reheating. A determination of the degree of hydration of C3S obtained at different periods by DTA correlates well with that using the X-ray method.
