What is the indication of shear slump and collapse slump in slump tests?

What is the indication of shear slump and collapse slump in slump tests?
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1 Answer

Answer :

There are three types of slump that may occur in slumps test, namely, true slump, shear slump and collapse slump.

True   slump   refers   to   general   drop   of   the   concrete   mass   evenly   all   around   without disintegration.

Shear slump implies that the concrete mix is deficient in cohesion. Consequently, it may undergo segregation and bleeding and thus is undesirable for durability of concrete.

Collapse slump indicates that concrete mix is too wet ad the mix is deemed to be harsh and lean.
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