Three-dimensional computer modeling of slag cement hydration |
| |
Authors: | Wei Chen H J H Brouwers Z H Shui |
| |
Affiliation: | (1) School of Materials Science and Engineering, Wuhan University of Technology, Luoshi Road 122, 430070 Wuhan, P. R. China;(2) Department of Civil Engineering, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands |
| |
Abstract: | A newly developed version of a three-dimensional computer model for simulating the hydration and microstructure development
of slag cement pastes is presented in this study. It is based on a 3-D computer model for Portland cement hydration (CEMHYD3D)
which was originally developed at NIST, taken over in the authors’ group and further developed. Features like the digitized
3-D microstructure, the cellular automata (CA) algorithm for simulating the random walking, phase transformation for simulating
the chemical reactions, are retained. But, the 3-D microstructure was reconstructed allowing for slag particles as binder
in the system. Algorithms and rules are developed to account for the interaction between Portland cement hydration and slag
reaction in the paste, of which the mechanisms were revealed in the studies by Chen and Brouwers (2007) J Mater Sci 42(2):428;
(2007) J Mater Sci 42(2):444] Methods for considering the various factors on the reactivity of slag in hydrating slag cement
pastes are proposed, mainly for the oxide composition of slag and the alkalinity in the pore solution composition. A comparison
between the model predictions and the experimental results in literature shows that the presented computer model can successfully
predict the hydration process and the microstructure development of hydrating slag cement paste. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|