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NIST Authors in Bold
|Author(s):||Nicos Martys; Chiara F. Ferraris; V Gupta; Josephine H. Cheung;|
|Title:||Computational Model Predictions of Suspension Rheology: Comparison to Experiment|
|Published:||July 25, 2007|
|Abstract:||Predicting the rheological properties of fresh concrete, mortars, and cement paste from first principles remains a great challenge. While progress has been made in modeling the rheological properties of idealized hard sphere-like suspensions, there is little in the way of theoretical predictions and experimental data for suspensions composed of random shaped particles like that found in cement-based materials. In this paper, results will be presented of a study comparing computational based model predictions to experimental measurements of the rheological properties of various suspensions. The model incorporates the particle size distribution as well as the shape of particles as determined from X-ray microtomography. The experimental determination of the rheological properties will be based on measurements using both co-axial and parallel plate rheometers for comparison and various materials that could potentially be used as reference materials. The agreement between the simulation and the experimental data could be the basis for simulation of flow in non-conventional rheometers.|
|Conference:||International Congress of the Chemistry of Cement|
|Proceedings:||Proceedings of the International Congress of the Chemistry of Cement | 12th | 2007 | ||
|Dates:||July 1, 2007|
|Research Areas:||Building and Fire Research|