There are different methods of measuring the workability of fresh concrete. Each of them measures a particular aspect of it and there is no unique test which measures workability of concrete in its totality. The three most commonly used method for testing workability of concrete are
- Slump test
- Vee-bee test
- Compacting factor test.
The table shown below describes different workabilities of concrete, in terms of slump, vee-bee and compacting factor test.
|
Workability Description |
Slump (mm) |
Vee-Bee Time (Sec) |
Compacting Factor |
|
Extremely dry |
– |
32-18 |
– |
|
Very stiff |
– |
18-10 |
0.70 |
|
Stiff |
0-25 |
10-5 |
0.75 |
|
Stiff plastic |
25-50 |
5-3 |
0.85 |
|
Plastic |
75-100 |
3-0 |
0.90 |
|
Flowing |
150-175 |
0 |
0.95 |