Question
What is sign of shear slump and collapse slump in slump tests?

Answer
There are three varieties of slump that might occur in slumps test, specifically, slump, shear slump and collapse slump.

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

Shear slump implies that concrete mix is lacking in cohesion. Accordingly, it might undergo segregation and bleeding and thus is adverse for durability of concrete.

Collapse slump point out that concrete mix is as well wet and mix is deemed to be harsh and lean.