There are three types of slump that may occur in a 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 indicates that the concrete lacks cohesion. It may undergo segregation and bleeding and thus is undesirable for the durability of concrete.
Collapse slump indicates that concrete mix is too wet and the mix is regarded as harsh and lean.
This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.
Advertisements
If you have a query, you can ask a question here.
i think the shear and collapse slump are interchanged? from the word collapse and shear you should have an idea on what these are.
yupp..they ae interchanged
Yes, it is absolutely true. Shear slump is termed as Collapse slump and vice versa – May be typing error while designating the figures. The terms are self explanatory as it is shown in the figures.
if there is shear or collapes what should we do with concrete?
This is an indication of lack of cohesion of the mix. increase the sand in your design.
The name given to the drawing shear should be for collapse and that for collapse should be named shear, this is according to the definition between shear and collapse slump.
This is an indication of lack of cohesion of the mix. Increase the sand in your mix designe.
Actually shear and collapse slump are interchanged? from the word collapse and shear you should have an idea on what these are.
actually shear slump at least retain a shape of slump one side shears but collaps no has slump shape it disperse