Used to determine the consistency of fresh hydraulic-cement concrete, both in the laboratory and in the field by the slump test, where Consistency is a measure of the wetness of the concrete mixture, which is commonly evaluated in terms of slump. The test gives an indication of the ease with which the concrete flows.
The fresh concrete is compacted into a mold in the shape of a frustum of a cone. When the cone is withdrawn upwards, the distance the concrete has slumped provides a measure of the consistency of the concrete.