抄録
Detail knowledge is required about the plastic properties of slurries, stress removal of a particles network with time, and so on in conjugation with their visco-elastic properties to develope analytical discriptions to the slurry processes.
A new cone and plate type apparatus was developed. It covers both shear test and usual thixotropic measurement. In the shear test, the plate was rotated at an extremely slow rate from rest and stopped after causing small distortion. The system was driven by a function generator, print motor and feed back control unit and multi-stage gear unit. The rotating angle of the plate and cone were measured with time at 0.03 degree accuracy. Bentonite-water of 16.81wt per cent slurry was examined as a sample.
The result of a shear test was favorable reproducibility and showed that this slurry behaved almost completely like an elastic boby with small distortion. Creep or yield phenomenon was observed at levels over the limiting strain of elasticity.
