What is the correlation between the compacting factor and slump?
Relation with a correlation coefficient of 0.9493 between slump and compacting factor is as shown in Figure 14. This relation can be used if one of these equipment is not available.
What is a compacting factor test?
The compaction factor test is carried out to measure the degree of workability of fresh concrete with regard to the internal energy required for compacting concrete thoroughly. The compacting factor test is used to find out the low workability of concrete.
How do you test for compaction factor?
procedure 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. Certain mixes have a tendency to stick in one or both of the hoppers.
What does slump test indicate concrete?
The concrete slump test measures the consistency of fresh concrete before it sets. It is performed to check the workability of freshly made concrete, and therefore the ease with which concrete flows.
Is code for concrete slump test?
Conforming to IS 7320:1974 Specifications for Concrete Slump Test Apparatus (Fourth revision).
What is the difference between slump test and compaction factor test?
Ans:-The main difference between both is that compaction factor test is more sensitive and precise than slump test and is particularly useful for concrete mixes of low workability and also able to indicate small variations in workability over a wide range.
What is the use of compaction test?
What is the purpose of the compaction test? The test aims to establish the maximum dry density that may be attained for a given soil with a standard amount of compaction effort. When a series of soil samples are compacted at different water content, the plot usually shows a peak.
What is the slump value for low workability?
5. observation and recording
| Workability | Compaction Factor | Slump (mm) |
|---|---|---|
| Very Low | 0.78 | 0 – 25 |
| Low | 0.85 | 25 – 50 |
| Medium | 0.92 | 50 – 100 |
| High | 0.95 | 100 – 175 |
How many types of slump tests are there?
There are three types of slump that may occur in a slumps test, namely, true slump, shear slump and collapse slump.
Which test is used for high workable concrete?
Which test Used for high workable concretes? Explanation: Compacting factor test used for high workable concretes. It measures the diameter of spread after vibration.
Which is better compaction factor or concrete slump test?
Compaction factor test of concrete is more precise and sensitive than the concrete slump test; hence it is more favorable and useful for low workable concrete or dry concrete which is generally used when concrete is to be compacted by vibration. Also Read: What is Compaction of Concrete?
What is slump test and why is it important?
Slump Test is perform to measure the consistency and workability of fresh concrete through an idea which it gives of water content needed for concrete to be used for different ideal works. A concrete is called as workable if it can be easily mixed, placed, compacted and finished and does not show any segregation or bleeding.
How is the slump of a concrete floor measured?
If the slump of the concrete is in between 0 to 25 mm than it is considered as very low workability of concrete, If the slump of the concrete is in between 25 to 50 mm than it is considered as low workability of concrete, If the slump of the concrete is in between 50 to 100 mm than it is considered as medium workability of concrete,
What do you need for a compaction factor test?
Compaction factor apparatus consists of trowels, hand scoop (15.2 cm long), a rod of steel or other suitable material (1.6 cm diameter, 61 cm long rounded at one end) and a balance.
