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How to test the compressive strength of concrete

The right concrete mix is very important to build a strong home. Which is why, it is important to check your concrete mix before using it. Hence, concrete testing needs to be done. Concrete testing is of 2 types - before casting and after setting. Let's understand how the compressive strength of concrete is tested.

WHY DOES DAMPNESS OCCUR?
 
1
This test is done after concrete sets and becomes firm.
2
In this test, the concrete cubes are tested in a compression testing machine.
3
A concrete cube mould of dimensions 150mm x 150mm x 150mm is used.
4
It is filled with 3 layers of concrete and compacted with the help of a tamping rod.
5
The upper surface is levelled with a trowel, and the mould is then covered with a wet jute bag and left to set for 24 hours.
6
After 24 hours, the cube is removed from the mould and cured in water for 28 days.
7
After measuring the size and weight of the cube, it is tested.
8
The plates of the testing machine and the concrete surface are cleaned, and the cube is placed between the plates.
9
Then, the load is gradually increased without any jerks, till the cube breaks.
10
Compressive strength of the concrete is calculated by recording the maximum load.
 



This is how the Compressive Test of concrete takes place.









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