Description

As per specification of BDS EN 197-1:2010, CEM-I, 52.5 N Crown Portland Cement is a cement prepared by mixing of Clinker of 95-100% and Gypsum 0-5%. This cement is also called Portland Cement (PC). Clinker is produced by intimate mixing together of calcareous and argillaceous materials, burning them at clinkering temperature up to about 1450-1500°C.

The resulting product (calcined product) is then cooled which is called clinker. It is then ground with gypsum at required fineness to obtain Portland cement. So, it may be said that cement is a finely ground mixture of calcium aluminates and silicates capable of setting and hardening by chemical reaction in presence of water. It is a binding material, which is used in engineering constructions. It is one of the most utilized building materials of the world.

Other Features of this cement are:

• Can gain high early strength
• Ensures durability
• Resists cracking
• Makes construction faster
• Effective in producing high compressive strength concrete
• Used in construction of high-rise buildings, Industrial buildings, factory buildings and all type of massive construction works
• Exclusively used in bridge, culvert, flyover, runway, pre-stressed concrete, pre-stressed prefabricated applications, tunnel mold systems & in mass housing construction
• Frequently used in reinforced concrete elements & other prefabricated productions, particularly for pretension prefabricated applications Mostly used in concrete classes of high compressive strength required applications