COMPACTING FACTOR of Concrete

Updated: May 1, 2020

AIM

To determine the workability of fresh concrete by compacting

factor test as per IS: 1199 - 1959.

APPARATUS

COMPACTING FACTOR APPARATUS


PROCEDURE

i) The sample of concrete is placed in the upper hopper upto

the brim.

ii) The trap-door is opened so that the concrete falls into the

lower hopper.

iii) The trap-door of the lower hopper is opened and the

concrete is allowed to fall into the cylinder.

iv) The excess concrete remaining above the top level of the

cylinder is then cut off with the help of plane blades.

v) The concrete in the cylinder is weighed. This is known as

weight of partially compacted concrete.

vi) The cylinder is filled with a fresh sample of concrete and

vibrated to obtain full compaction. The concrete in the

cylinder is weighed again. This weight is known as the

weight of fully compacted concrete.

REPORTING OF RESULTS

A = Weight of partially compacted concrete

B = Weight of fully compacted concrete

A

Compacting factor = —— x 100%

B

It should normally be stated to the nearest second decimal

place

11 views0 comments

Recent Posts

See All