Question

Workability of concrete mix with low water cement ratio is determined by

• A. Tensile strength test
• B. Water content test
• C. Cube compression test
• D. Compaction factor test

Answer 1

The correct option is D Compaction factor test

Workability of concrete mix with low water cement ratio is determined by compaction factor test. it is used for which slump test is not suitable.
compaction factor test is described in $IS1199:1959$ and in $ACI211.3-75$ and is appropriate for concrete with a maximum size of aggregate up to $38mm$ Description of Workability Compacting factor

Very low	$0.78$
Low	$0.85$
Medium	$0.92$
High	$0.95$