Cement is a fine mineral powder that acts as the "glue" or binding agent for building materials. When mixed with water, it undergoes a chemical reaction called hydration, hardening into a rock-like mass that binds sand and gravel together.
The Most Common Types
- Ordinary Portland Cement (OPC): The industry standard used for general construction like high-rise buildings, bridges, and pavements.
- Portland Pozzolana Cement (PPC): Contains fly ash or volcanic materials. It is more eco-friendly, highly resistant to chemical attacks, and ideal for marine structures or dams.
- White Cement: Chemically similar to grey cement but lacks iron and manganese. It is used for decorative work, wall grouting, and marble flooring.
- Rapid Hardening Cement: Designed to gain strength quickly; used when formwork needs to be removed early or for urgent road repairs.