How do you calculate compaction factor?
The compacting factor is defined as the ratio of the weight of partially compacted concrete to the weight of fully compacted concrete. It shall normally be stated to the nearest second decimal place.
What is compaction factor test of concrete?
Compaction factor test is the workability test for concrete conducted in laboratory. The compaction factor is the ratio of weights of partially compacted to fully compacted concrete. It was developed by Road Research Laboratory in United Kingdom and is used to determine the workability of concrete.
How is compaction factor test is done?
The sample of concrete to be tested shall be placed gently in the upper hopper, using the hand scoop. The hopper shall be filled level with its brim and the trap-door shall be opened so that the concrete falls into the lower hopper.
What is compaction of concrete?
Compaction is the process which expels entrapped air from freshly placed concrete and packs the aggregate particles together so as to increase the density of concrete. It increases significantly the ultimate strength of concrete and enhances the bond with reinforcement.
When compaction factor is 0.84 then the degree of workability of concrete is designated as?
Explanation: Compaction factor should lie between 0.95 and 1 for high workability. Hence compaction factor of 0.88 indicates that the workability of the concrete mix is Medium.
What is the compaction factor for degree of workability?
What is the compaction factor for medium degree of workability? Explanation: The compaction factor for medium degree of workability is . 92 and . 78 is the compaction for a very low degree.
What is the compaction factor for low degree of workability?
Explanation: The compaction factor for low degree of workability is . 85 and . 95 is the compaction for the high degree.
What are the method of compaction?
The method of compaction is primarily of four types such as kneading, static, dynamic or impact and vibratory compaction. Different type of action is effective in different type of soils such as for cohesive soils; sheepsfoot rollers or pneumatic rollers provide the kneading action.
Is code for concrete compaction?
The concrete compaction should be done as per IS code 456.
Is compaction factor of concrete is 90 then workability is?
Hence compaction factor of 0.9 indicates that the workability of the concrete mix is Medium.
When compaction factor is 0.84 then the degree of workability of concrete is designed as?
When compaction factor is 0.8 then the degree of workability of concrete is designated as?
For a good workability, compaction factor must be between (0.7 – 0.95). Extremely low – 0.65 to 0.68. Very low – 0.75. Low – 0.83 to 0.85.
Is 456 a compaction factor?
The value of compaction factor is 0.75 to 0.8 with adherence to IS 456-2000. It is not recommended for concrete having very low workability of 0.7 or under.
What is the compaction of concrete?
What is the compaction factor for medium degree of concrete workability?
Is code for compaction factor test?
Compaction Factor Test of Concrete: Procedure Lab Report pdf as per IS Code: 1199-1959.