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

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1039/B910216G
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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
  2. National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
FormatText, Article
Subjecttricalcium silicate (C3S), calcium silicate hydrate (C-S-H), seeding, nucleation, hydration, derivative calorimetry, quantitative 29Si MAS NMR; Concrete
Abstract
The 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.
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  • Journal of Materials Chemistry 19, no. 33 (9 September 2009): 1–19.
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 51324
NRC-IRC-20372
NPARC number20374136
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Record identifier82783e7a-7802-4758-b945-86dbb7eb2933
Record created2012-07-23
Record modified2020-04-16
Date modified: