Understanding Concrete Slump Test
How to Perform a Concrete Slump Test
Interpreting the Results
The following general principles can help you interpret the findings:
For the majority of concrete applications, a slump value of 1-2 inches is considered typical.
A greater slump value denotes more workable, less difficult to compact, and easier to install concrete.
Lower slump values signify less workable concrete and may need more water or other additions to improve uniformity.
To increase the overall quality of the concrete, it can be required to modify the mix design or installation techniques if it slumps excessively or displays signs of segregation.