What is cement?

Cement has been in use as far back as the time of the ancient Egyptians, Greeks and Romans. Variations of cement have been used by humans to ‘glue together’ stone and other building materials for centuries. Cement is a term used today to refer to the fine powdery material left after ‘clinker’ has been ‘milled’. When mixed with water, cement can be used to bind or join (as mortar for example) or, when combined with aggregates and sand, create strong and hard surfaces and structures (concrete).