Q9Engineering Chemistry

It is unequivocally the absolute most vital, universally utilized construction material globally.

The strict manufacturing process involves violently heating limestone and clay in a massive rotary kiln to temperatures approaching $1500^{\circ }\text{C}$. This extreme thermal process totally chemically fuses the raw materials into hard, nodular 'clinkers' consisting primarily of heavily complex calcium silicates and calcium aluminates. These highly reactive clinkers are then systematically pulverized into a microscopic powder. A strict, highly regulated addition of 2-3% gypsum ($CaS{O}_4\cdot 2H_{2}O$) is mandatory during final grinding to chemically retard the violent, flash-setting tendency of the highly reactive aluminates.