Workability of Fresh Concrete by Compacting Factor Test
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COMPACTING FACTOR
Compacting factor of fresh concrete is done to determine the workability of fresh concrete by compacting factor test as per IS: 1199 – 1959. The apparatus used is Compacting factor apparatus.
Procedure to determine workability of fresh concrete by compacting factor test.
i) The sample of concrete is placed in the upper hopper up to 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.
Compacting factor = (Weight of partially compacted concrete)/(Weight of fully compacted concrete)
what is the engineering importance of compactng factor
Why the compacting factor test must do after the concrete was mixed?
Is there any relation or curve between Compacting Factor and Slump? Like if the slump is 100, what will be the corresponding value of compacting factor?
i got 1 ques-whatdo u mean by high or low workability…….\
ques-what is the max grade of concrete used ever and where?
is there any application of compacting factor; like on obtaining some compaction factor the mix is rejected or accepted; or is it just to know how workable the mix is?
what factors effect the workability of a concrete mix?
why is the compaction test more appropriate for dried mixes?
what is the fixed period suggested in b.s. 1881?
what factors affect the workability of concrete mix?
why is the compaction test more appropriate for dried mixes?
will the age of the concrete after mixing affect the results?
Is it nessary to carry out both tests at a fixed time after mixing?
What is the fixed period suggested in B.S. 1881?
Can the tests be standardised up to 10 mins?
why is the slump test suitable for site use??
Why is the compaction test more appropriate for dried mixes?
will the age of the concrete after mixing affect the result?
we are take concrete mouled after when take test&proudure.
What is the usefulness and application of the result of this experiment?
workability is decress by the addition of water, how??
i want exact answer for what is mean by workability of concrete?