Advantages and Limitations of Concrete Slump Test

kavya

Advantages and limitations of concrete slump test

The slump check is very simple and easy. It can be achieved without any question by a non-technical person.
It is very useful to check the variability in batch by batch or hour by hour in the products to be fed into the mixer. A higher recession indicates aggregate moisture content has suddenly higher or fine aggregate deficiency has improved. Too big or too small a slump is an indication of unfavorable concrete workability and a notice to find a solution to the problem is issued to the mixer operator.
This experiment does not require any expensive equipment. It is not necessary to send the specimen to a laboratory. In the construction area, it can be finished.
The slump check does not take a long period of time to get the answer. It takes nearly a month to get the outcome if we connect with the compressive strength check, but we can get slump quality within a few minutes.

For lean blends, it is weak. A genuine depression will easily turn into shear or crash in a lean combination.
High variance can be seen from a study of lean mix and identifying the exact result can be great confusion.
The calculation is not precise because the recession has no particular working relationship. Even the same downturn can be reported for different types of aggregates with specific workability. We should also bear in mind that the compaction facility is not assessed by decline. The slump happens only under the concrete’s self-weight, it does not reflect actions in different conditions such as friction, starting, heating, or going through a tremie.
For a sample, the correct result can be mistaken by more than one type. When shear slump exists, the next experiment can result in a real slump.
The workability of solid blends can not be distinguished as it demonstrates no slumps. Any disparity between different mixes with equal workability can be observed in the dry zone.
It is not ideal for an amount of more than 40 mm of cement.