Comparison of Workability Measurements By Various Methods

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 Comparison
Workability Comparison

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

 

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