Hydration of tricalcium silicate in the presence of synthetic calcium-silicate-hydrate

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DOIResolve DOI: http://doi.org/10.1039/B910216G
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TypeArticle
Journal titleJournal of Materials Chemistry
Volume19
Issue33
Pages119; # of pages: 19
Subjecttricalcium silicate (C3S), calcium silicate hydrate (C-S-H), seeding, nucleation, hydration, derivative calorimetry, quantitative 29Si MAS NMR; Concrete
AbstractThe early age hydration of tricalcium silicate, the main chemical compound in Portland cement, was studied in the presence of synthetic calcium silicate hydrate (C-S-H) addition having C/S ratios=0.8 and 1.2. Isothermal conduction calorimetry, scanning electron microscopy, differential scanning calorimetry and 29Si MAS NMR were employed in order to investigate events occurring during various stages of the hydration. The results that were analyzed using novel methods in cement chemistry showed that the addition of seeds of synthetic C-S-H significantly accelerated the hydration of C3S. The extent of the acceleration was dependant on the amount and chemical composition of the C-S-H seeds. It was suggested that the synthetic C-S-H significantly increased the rate and degree of dissolution of the C3S particles.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Research in Construction; NRC Steacie Institute for Molecular Sciences
Peer reviewedYes
NRC number51324
20372
NPARC number20374136
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Record identifier82783e7a-7802-4758-b945-86dbb7eb2933
Record created2012-07-23
Record modified2016-05-09
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