cement historyA brief history
The Egyptians were the first to produce cement which was then improved and perfected by following civilizations. Whereas ancient Egyptians used a mixture of lime, clay, sand and water to produce cement, the ancient Greeks of Italy added volcanic ash found at the region of Pozzuoli, near Naples ( Pozzuoli is a volcanic region where Pozzolana is found). Then the Romans perfected this binder by adding volcanic ash. In fact, cement is a mixture of limestone and crushed aggregates and added clay.
Cement in its current state was not known as such until the 19th Century. In 1817, the scientist Louis Vicat discovered the secret of the occurrence of moisture in lime, which was called hydrated lime and artificial hydraulic lime in 1840.
Following that, researches were carried out regarding the non-hydrated lime which does not mingle with water. Hydrated lime has a large amount of water and is rich with clay content.
It hardens and dries quickly if not fired to the point of liquefaction. In 1796 the scholar James Parker world discovered James Parker at the Shaibi Island of UK, discovered the easy cement product (which, being hydrated or natural cement, quickly melts at a heating degree of 900 ° C as any other ordinary natural limes). It was called Roman cement and lasted from 1820 to 1920 as the most common and famous cementIn 1824, Joseph Aspdin, a British scholar, invented his now famous patent for a method of making a cement he called "Portland cement," after the name of Isle of Portland nearby the English Channel. In 1846, Dupont et Demarlé built the first cement plant at Boulogne sur Mer in Franc. Cement manufacturing improved following the invention of new equipment to crush clinkers (through the use of rotary kiln).