What is the usefulness of Slump test of concrete?
A. Slump test of fresh concrete is an indication of the following: If grading of the aggregates is uniform, it will indicate variations of water context pr water/ cement ratio. If the amount of water added to the mix is accurate and surface mixture of fine aggregates is constant, then it will indicate variations in grading or variations in batching of element or aggregates. If the cohesiveness of the mix for a particular workability is most adequate, due to inadequate concrete mix design and batching, the concrete core will collapse or shear off. In general, slump test provides an idea of consistency of concrete batch to batch of concrete. It should be carried out as soon as possible, at about the same time after mixing let us 5/10min. The method of slump test depends upon slump of concrete. For very law slumps – compacting factor method, foe low medium slumps- slump core and for very high slumps veer-bee flow method.
