Typical cement ingredients and their functions
Cement ingredients –
* Silicon Dioxide (Silica)
* Aluminum Oxide (Alumina)
* Calcium Sulphate
* Iron Oxide
* Magnesium Oxide
Function: It makes cement sound and provides strength to cement.
Function: The function of silica is also to give strength to cement.
Function: It adds quick-setting property to cement.
Function: It helps to increase the initial setting time of cement.
Iron Oxide: It is also called Ferric Oxide. Cement has 0.5%-6% iron oxide of its mass. Iron Oxide’s chemical name is Fe2O3.
Function: It provides color and hardness to cement. It also provides some strength to cement.
Magnesium Oxide: Magnesium Oxide is expressed by MgO. It also provides color and hardness to cement.
Sulfate: It is also called Sulphur. It holds 1.5%-4% of the mass of cement. The chemical name of Sulphur is S.
Function: A very small quantity of Sulphur in the cement makes it (Cement) sound.
Alkalis: A very small quantity of this may present in the cement.
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