Cement is a fine powder made from a mixture of minerals, primarily limestone and clay. When mixed with water, it forms a paste that hardens over time, making it a crucial ingredient in concrete. This strong material is widely used in construction for building foundations, roads, and bridges. The process of making cement involves heating the raw materials in a kiln at high temperatures, which creates a substance called clinker. This clinker is then ground into the powder we know as cement. Its durability and versatility make it essential for modern infrastructure and architecture.