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For full article on Self Compacting Concrete (SCC): Click Here
SCC should not be confused with high or very high
slump (180mm to 250mm) “flowable” conventional concretes (which may also use the
new generation of polycarboxylate superplasticisers)which are still subject to
segregation problems and require vibration to achieve compaction.
SCC
is not a traditional high-slump concrete. Photo on the right (Courtesy of Hokkaido Electric Power: Source-Concrete Monthly : March’04 issue) shows the result of a slump
test conducted on an SCC mix. Notice that the concrete has flowed like a
viscous liquid rather than exhibiting the traditional slump of a high slump concrete. It can be noted that the aggregates are uniformly
distributed, there is no fringe of grout and no water standing on the patty or
along the fringes. The concrete is made flowable by altering the mix proportions and through the
use of additional admixtures that prevent segregation.
Traditionally,
high-slump concretes have been plagued with the tendency to bleed and
segregate. The development of SCC makes it possible to produce a concrete that
would fall under the category of high-slump concrete; however, its behavior far
exceeds that of a high-slump mix.
For full article on Self Compacting Concrete (SCC): Click Here
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