
►We have in the two previous weeks looked at Portland cement, its pricing and its proper application in construction.
►The manufacture of Portland cement clinker requires large amounts of energy. Considerations of the environmental impact of the manufacturing process have brought about the situation in which for the cement sold in the market, there has been a reduction in the amount of clinker whilst other materials such as limestone and pulverised fly ash are added to make up for the clinker that has been removed.















