The Closest Chemical Composition to Portland Cement
Which CSM has the closest chemical composition to Portland cement?
Calcium aluminate cement (CAC) is one of the Cementitious Systems (CSMs) that has the closest chemical composition to Portland cement. This is due to the fact that CAC and Portland cement share similar chemical components.
The Chemical Composition of Calcium Aluminate Cement
Calcium Aluminates: The main components of CAC are aluminium oxide (Al2O3) and calcium oxide (CaO). These compounds contribute to the cementitious properties of CAC.
The Chemical Composition of Portland Cement
Calcium Silicates: Portland cement is primarily composed of calcium silicates, which are combinations of silicon dioxide (SiO2) and calcium oxide (CaO). These compounds are responsible for the cementitious properties of Portland cement.
While the exact proportions of the chemical components may vary between CAC and Portland cement, their similar makeup allows CAC to exhibit qualities that are comparable to Portland cement. This similarity makes CAC a suitable alternative in applications that require high early strength development and rapid setting.