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Estimation of tricalcium silicate through polymorphic transformation

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada
FormatText, Article
SubjectConcrete; Portland cement; hydration; heat treatment; polymorphism; thermal engineering; hygrothermics
Abstract
Tricalcium silicate characteristically exhibits the most intense reversible transition at a temperature of about 915 degrees. The intensity of this effect can be used to estimate the amount of C(3)S in mixtures and to calculate the degree of hydration of C(3)S. Low sensitivity for deltaT up to 800 degrees and higher sensitivity between 800 degrees and 1000 degrees, enable estimation of both Ca(OH)[ 2] and C(3)S. Interference effects at higher temperatures owing to decarbonation, recrystallization to beta- wollastonite, and dehydration of the calcium silicate hydrate can be overcome by heating to 1000 degrees, cooling to 800 degrees, and reheating. A determination of the degree of hydration of C(3)S obtained at different periods by DTA correlates well with that using the X-ray method.
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  • Journal of Thermal Analysis 3, no. 2 (1 September 1971): 181–190.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-RP-497
NRC numberNRCC 12178
NRC-IRC-2993
NPARC number20375970
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Record identifier8b4cc2dd-a586-4599-98fd-6106190db657
Record created2012-07-23
Record modified2024-01-19
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