International Summit on Cement Hydration Kinetics

T. Xie*, J. J. Biernacki, M. Gottapu and A. Parkes

Department of Chemical Engineering

Tennessee Technological University, Cookeville, TN

The present effort illustrates a semi-analytical continuum mechanical approach for approximating reaction and transport in a single C₃S particles.   This simulation in one in a series of As part of a series of models being developed by the TTU team and is presently incorporated into their Population Balance formalism.¹  The semi-analytical approach might be attributed to Pommersheim, who suggested a combined reaction diffusion model in 1979.² Pommersheim, however, choose to focus on water transport, did not include a continuous phase mass balance and ignored the transport of silicate and other reactive ions.  In contrast, our model is based on H₂SiO₄^-2 ion transport, and includes a continuous phase mass balance.  The model is demonstrated for recent physical property datasets.³

¹ Xie and Biernacki, “From Single Particles to Particle Ensembles –  Population Balance Details,” Laval University, July 2009.

² Pommersheim, “Mathematical  Modeling of Tricalcium Silicate Hydration,” Cem. Concr . Res., 1979, 9, 765-770.

³ Jeffery W. Bullard, J. Am. Ceram. Soc., 2008, 91[7], pp. 2088-2097.

xie-Poster

* Presenter.