Cement in General
Cement and concrete are often thought of as the same thing, however, they are by nature very different. Cement is an ultra-fine gray powder that binds sand and rocks into a mass which is called concrete. Cement is the key ingredient of concrete, but concrete contains other substances like sand and rocks.
Cement has become one of the world's most widely used building materials. Annual global production of concrete hovers around 5 billion cubic yards, a volume approximated by yearly cement production levels of about 1.25 billion tons. Concrete's global appeal is not accidental, for this stone-like material is produced from some of the world's most abundant resources.