Have you ever seen white layer on your wall that looks like powder? Well, it is a common phenomenon found in every house. Do you know what this white powdery appearance on the wall is? It is efflorescence. I will explain the meaning of concrete efflorescence.
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Efflorescence is a whitish powdered deposition on salts that occurs on the surface of the concrete due to evaporation. This only occurs when water-soluble salts are present in the concrete and after evaporation of water it comes on the surface from the concrete.
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Salts are found in aggregates such as sand taken from river banks which are required for making concrete. These salts are the main reason for causing efflorescence in concrete.
There is a process called curing in concrete. If this method is not completed properly the un-hydrated products remain on the surface which forms efflorescence on concrete.
Due lack of sunlight and humidity in the air salts sit on the surface and that is why efflorescence occurs on the surface of the concrete. You will see efflorescence on concrete basement floor due to a lack of sunlight and air which helps to dry the water residue from the walls. Efflorescence on concrete block walls occurs due to this reason.
If the quantity of water is more in the mixture than the concrete mix, it makes the concrete porous which creates a path for water and salt to come to the surface and for efflorescence.
In the rainy season, the water acts as a medium to transfer the salt to the surface and form a crystalline white powder.
Due to the poor compacting of concrete water can enter easily into the concrete which causes efflorescence.
You can fix the efflorescence by renovating your house. You can apply sealers and coatings to prevent water from penetrating the wall blocks.
I hope you know the meaning of concrete efflorescence now.
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What is efflorescence in concrete?
Jasmine
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2022-08-10T10:24:04+00:00 2022-08-10T10:24:06+00:00Comment
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