Equipment

• V-funnel, as shown in Figure 7, made of steel, with a flat, horizontal top and placed on vertical supports, and with a momentary releasable, watertight opening gate.
• Stopwatch with the accuracy of 0.1 second for recording the flow time.
• Straightedge for levelling the concrete.
• Buckets with a capacity of 12∼14 litres for taking concrete sample.
• Moist sponge or towel for wetting the inner surface of the V-funnel.

Principle

The V-funnel flow time is the period a defined volume of SCC needs to pass a narrowopening and gives an indication of the filling ability of SCC provided that blocking and/orsegregation do not take place; the flow time of the V-funnel test is to some degree related tothe plastic viscosity.