It can be used on site, though the size of the base plate is somewhat unwieldy and level ground is essential.It is the most commonly used test, and gives a good assessment of filling ability.The spread can range from 18 to 32 inches (455 to 810 mm).The resistance to segregation is observed through a visual stability index (VSI).The VSI is established based on whether bleed water is observed at the leading edge of the spreading concrete, or if aggregates pile at the center.
Therefore, this test method is considered applicable to self-consolidating concrete having coarse aggregate up to 25 mm [1 in.] in size.
During the slump flow test, the viscosity of the SCC mixture can be estimated by measuring the time taken for the concrete to reach a spread diameter of 20 inches (500 mm) from the moment the slump cone is lifted up.
This is called the T) value may be appropriate for concrete that has to travel long horizontal distances without much obstruction.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.