Hello friends in this article I am going to tell you about what is the cause of honeycomb in the structure which you are watching in this picture.
Friends this is known as honeycomb. Friends this is very dangerous for structure.
Because it reduce the strength of structure.
This is also some time called as air pocket. It is created in structure due to improper compaction and mixing of the ingredient like cement sand and aggregate.
It is simply a space where concrete can not reach at some portion of structure.
It is cause due to too stiff concrete, stiff means hard which have less water in mix.
So friends to avoid it we should mix the concrete materials very well and make it as design very well and also,
We should use vibrater at site to avoid honeycomb. So that we can achieve 100% strength as well as durable to remain long last.
Honeycomb is generally occurred in beam, slab and column etc. Which may cause whole structure to be collapse.
It is formed after harden of concrete structure.
Honeycomb which are present outside of concrete can detected by our nacked eyes but if is present in inner side of concrete then it can only be detected by the help of ultrasonic testing.
And one thing also friends honeycomb can also caused when we place the concrete from more height. It should not be greater than 1.5 meter.
Why this happen I will discuss in next article.
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Watch video on Why Honeycomb occurs in structure | How to cure Honey comb