1985 Volume 18 Issue 6 Pages 519-525
The shear stress-shear rate behaviour of a thixotropic coal water mixture (CWM) was studied in coaxial rotating cylinder rheometer under a wide variety of rest and shear rate history. The transient stress data were used to construct equilibrium and constant-structure flow curves. These transient stress data, i.e. the stress relaxation data and the stress recovery data, were also used to evaluate the breakdown and buildup processes of the internal structure. A phenomenological thixotropy model which has the structural stress as a thixotropic structural parameter was proposed. This model can predict the thixotropic hysteresis loop precisely.
