Thermal analysis of the 3CaO.Al2O3-CaSO4.2H2O-CaCO3-H2O system

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Journal titleThermochimica acta
Pages27382; # of pages: 192
Subjecthydration; portland cement; calorimetry; thermogravimetry; hydration products; differential scanning calorimetry; thermogravimetry; calcium carbonate (caco3); cubic aluminate hydrate formation; ettringite formation; monosulfoaluminate phase; gypsum; portland cement - setting; hardening characteristics; Concrete; hydratation; ciment portland; calorimétrie; thermgravimétrie
AbstractHydration products formed at different periods in mixtures containing C3A with either or both CaSO4 2H2O (0.12.5,25%) and CaCO3 (0, 12.5, 25%) were followed by differential scanning calorimetry and thermogravimetry. Depending on the length of hydration, different products were formed. Calcium carbonate retards or suppresses formation of the cubic aluminate hydrate in the hydration of C3A, but it accelerates the formation of ettringite and its conversion to the monosulfoaluminate phase in the hydration of C3A+gypsum.
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AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number26639
NPARC number20375660
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Record identifier91864735-9f84-4438-9c48-c3a706f0c5ef
Record created2012-07-23
Record modified2016-05-09
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