Rheology of Concentrated Suspensions of Spheres. II. Highly Concentrated Suspensions and Pastes
MONSANTO RESEARCH CORP ST LOUIS MO
Pagination or Media Count:
A modified Stormer viscometer was used to study the flow behavior of suspensions of glass beads in liquids of different polarity over the volume concentration range from 50 to 60 percent. The flow behavior was pseudoplastic in some cases but rigid pastes were observed in other cases in this concentration range. The nature of the particle surface affected the flow behavior in the same manner as at lower concentrations. At still higher concentrations 60 vo, a yield stress was found for all systems. Slipping occurred in the viscometer, and this phenomenon sets an upper limit for the study of concentrated suspensions.
- Fluid Mechanics