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First, let me clear this one of the basic concepts that when we use any extra ingredient besides the ingredient of concrete for improving its some property, it is known as an admixture.
When we use any extra ingredient in cement to improve some cement property, it is called an additive.
Important: Additives are added to the cement and not the admixture.
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The types of mineral admixtures are as follows :-
1. Water-reducing admixtures
2. Retarding admixtures
3 .Accelerating admixtures
4. Water-reducing and retarding admixtures
5. Water-reducing and accelerating admixtures
6. Water-reducing, high range admixtures
7. Water-reducing, high range, and retarding admixtures
Commonly used mineral admixture are as follows:
Pulverized coal is combusted in thermal power plants for electricity generation. By product of this combustion reaction is fly ash
It is the by product of iron extraction process from iron ore.
It is produced as the by product of electric arc furnaces in the production of elemental silica.
Rice Husk Ash is produced by the burning of rice husk.
ordinary clay and kaoline clay when thermally activated is called metakaoline
Commonly used mineral admixture are as follows:
There are two types of admixtures:
Mineral admixtures are mostly solids. Chemical admixtures are mostly liquids.
The most common mineral admixtures are:
The mineral admixtures are added majorly to modify the strength of the concrete and increase the compressive strength.. Since all these mineral admixtures are byproducts of some industrial process which otherwise would be dumped into landfills, it is also beneficial to the environment.
Mineral admixtures
which have definite characteristics through which they impact the properties of concrete in a different way.
