SCC, was first introduced in the late 1980s by Japanese researchers , is highly workable concrete that can flow under its own weight through restricted sections without segregation and bleeding.
Such concrete should have a relatively low yield value to ensure high flow ability, a moderate viscosity to resist segregation and bleeding, and must maintain its homogeneity during transportation, placing and curing to ensure adequate structural performance and long term durability.
In considering these tests there are number of points which should be taken into account:2.
Tests, such as slump flow, V-funnel etc, are used to determine the filling ability of fresh concrete.
Also, compactibility is affected by the characteristics of materials and the mix proportions; it becomes necessary to evolve a procedure for mix design of SCC.
Passing ability: It is the ability of SCC to flow through tight openings, such as spaces between steel reinforcing bars, under its own weight.Self-Compacting Concrete (SCC), which flows under its own weight and does not require any external vibration for compaction, has revolutionized concrete placement.