They can also come as blends to include Portland blastfurnace cement incorporating ground granulated blast furnace slag (GGBS) and Portland flyash cement incorporating fly ash.
Gypsum mortar, also called plaster of Paris, was used in the construction of the Egyptian pyramids and many other ancient structures.
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Cement, in one of its many forms, is one of the most widely used materials in the built environment.
Dating back to Roman times mixtures of a pozzolan and non hydraulic lime have been used to produce a hydraulic cement material.
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Later bricks were made from clay and fired in a kiln to increase their durability.
The history of concrete blocks dates back to ancient Greece and Rome, although they were not manufactured commercially until the early 20th century.
Bricks and concrete blocks are some of the oldest and most reliable of building products.
Bricks were first used 5,000 years ago and were made from dirt using straw as a binder.
However, Aspdin's methods were "rule-of-thumb" and Vicat is responsible for establishing the chemical basis of these cements, and I C Johnson established the importance of sintering the mix in the kiln.