Three-Dimensional Computer Simulation of Portland Cement Hydration and Microstructure Development.
Three-Dimensional Computer Simulation of Portland Cement
Hydration and Microstructure Development.
(3744 K)
Bentz, D. P.
Journal of the American Ceramic Society, Vol. 80, No.
1, 3-21, 1997.
Keywords:
portland cement; computer simulation; building
technology; cement hydration; chemical shrinkage;
compressive strength; computer modeling; heat of
hydration; maturity; microstructure; self desiccation
Abstract:
A three-dimensional computer model for the simulation of
portland cement hydration and microstructure development
has been developed. Starting with a measured
particle-size distribution and a set of scanning electon
microscopy images, a three-dimensional representation of
a cement of interest is reconstructed, matching the
phase volume fractions and surface-area fractions of the
two-dimensional images. A set of cellular-automata
rules is then applied to the starting microstructure to
model the chemical reactions for all of the major phases
during the evolving hydration process. The dissolution
cycles used in the model have been calibrated to real
time using a single set of parameters for two cements at
three different water-to-cement ratios.
