Humans have been using Cement since ancient times. Notably, a whitewashed floor made using burned limestone and clay was discovered in Turkey. Around 800 BC, the Phoenicians used a blend of volcanic ash and lime to create a rudimentary form of cement. This mixture is known as pozzolanic cement that have remarkable strength and durability. Furthermore, in the Indian subcontinent, the people of Indus Valley Civilisation used mud mortar as a binding agent.