Abstract
A numerical model was developed based on rheology and fluid dynamics to calculate paste-aggregate interface settling speed in an effort to help prevent self-consolidating concrete static segregation, which occurs when aggregate sinks in at-rest concrete. The model was found to be reasonably accurate in describing static segregation. Density, volume fraction, maximum volume fraction, aggregate size, and paste rheology (viscosity and yield stress) are among the properties seen to affect static segregation.
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