A method for viscosity measurement of cement grouts is discussed in this paper and the results are presented in the form of formulas and curves.

The cement used in the tests was Type II portland cement. It was found that the cement grouts with water/cement ratios of 0.42 to 0.44 have fluid characteristics of Bingham plastic type.

The hydraulic grade line of grout in a tendon duct was estimated using laboratory viscosity data and was compared with a field test.