Building materials in our world have come a long way. From Wood and rock structures thousand years ago, now we have structures that reach to the sky. Much of this is due to technological advances, especially in the manufacture of cement-based concrete. Cement, one of the essential building materials, which is usually a fine, soft, and powdery substance, made up of a mixture of elements found in natural materials such as limestone, clay, sand, and slate. When cement is mixed with water, it binds sand and gravel to form a hard, firm mass called concrete. Cement is manufactured by a close combination of mainly four elements; Calcium, silicon, aluminum, and iron. Calcium, the main component, is obtained from limestone and silicon, whereas limestone and silicon receive from sand or clay. Cement is generally grey. However, white cement can also be found, but it is generally more expensive than grey cement. Ordinary Portland Cement (OPC) is the most widely used cement in the world, but anot