We are using Bentonite Slurry as Soil Stabilizing liquid, We have to check the viscosity to determine whether the slurry is not too thick or too thin.We need the Viscosity of Bentonite slurry between 30sec to 50sec.
Procedure for Determining Viscosity of Drilling Slurry as below.
1-Cover the funnel orifice with a finger and pour 500 cc freshly sampled drilling fluid
through the screen into the clean, upright funnel.
2-Remove finger and start stopwatch.
3-Measure the time for the funnel to empty.
4-Report the time to nearest second as Marsh funnel viscosity.