Chemical Composition of Raw Materials | CEMENT | Part 1.1 | BMC

Basic constituents of Hydraulic Cement: Lime CaO, Silica SiO₂, Alumina Al₂O₃, Iron Oxide Fe₂O₃

• The various proportions of these oxide compositions are mainly responsible for influencing the various properties of cement. For example an increase in Lime content beyond a certain value makes it difficult to combine completely with other compounds because, free lime or surplus lime will exists in the clinker and result in an unsound cement.

Cement | Introduction | Part 1

1. Cement is a material which has cohesive and adhesive properties in the presence of water. 
2. Obtained by pulverizing clinker formed by calcinating raw materials primarily consisting of  Lime (CaO), Silicate (SiO₂), Alumina (Al₂O₃) and Iron oxide (Fe₂O₃).
3. It was invented by Joseph Aspdin of UK in 1824. He named it Portland cement because the hardened concrete made out of the cement aggregates and water in definite proportion resembled the natural stone occurring at Portland.