Self Compacting Concrete is an innovative concrete that does not require vibration for placing and compaction. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement.
The hardened concrete is dense, homogeneous and has the same engineering properties and durability as traditional vibrated concrete.
SCC Potentials beyond conventional concrete
Use with close meshed reinforcement
For complex geometric shapes
For slender components
Generally where compaction is difficult
Fast installation rates
Reduced damage to health
How is this performance achieved?
This concrete is extremely soft and flowable.
SCC remains homogeneous and cohesive without segregation, separation or bleeding
With the application of polycarboxylate based superplasticizers an outstanding fluidity at lowest water/cement ratios could be achieved.
Special mix design considerations due to its high content of fines (? 0,125mm) and adapted grading curve
Special high performance superplasticizers are necessary to produce SCC, in order to ensure a fluid concrete with controlled workability, a very high water reduction and a stable and cohesive concrete.
Same procedure as with normal concrete, but faster and with less manpower
SCC would not be freely discharged from a great height
Conventional formwork can be used
Pressure of fresh concrete on formwork is slightly higher than with conventional concrete
If the concrete surface has to satisfy high aesthetic demands, the SCC should be placed under pressure, i.e. via a filling socket from below or by pipes which reach beneath the concrete surface level