Question

Which of the following is not a test for measuring the workability of concrete ?

• A. Slump Test
• B. Flow Test
• C. Std. Consistency Test
• D. Kelly Ball Test

Answer 1

The correct option is C Std. Consistency Test

Std. Consistency Test: Amount of water used to make a paste of normal consistency. It is the percentage of water required for the cement paste to achieve viscosity which will be such that Vicat's plunger penetrates upto 5 to 7 mm from bottom of the Vicat's mould.

$\begin{array}{ccc}\text{S.No}& \text{Attachment}& \text{Use}\\ 1.& \text{Plunger, 10 mm dia, 50 mm long}& \text{Consistency test}\\ 2.& 1mm\times 1\text{mm square needle}& \text{Initial setting time}\\ 3.& \text{5 mm dia, annular collar}& \text{Final setting time}\end{array}$

$\Rightarrow$ Rest all are tests for measuring workability of concrete directly or indirectly