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Manufacturing Description ] Cement Storage ] [ Cement Varieties ]

 

Varieties of Cement in India


There are some varieties in cement that always find good demand in the market. To know their characteristics and in which area they are most required, it will be better to take a look at some of the details given below.

  • Portland Blast Furnace slag cement (PBFSC): The rate of hydration heat is found lower in this cement type in comparison to PPC. It is most useful in massive construction projects, for example - dams.
  • Sulphate Resisting Portland Cement: This cement is beneficial in the areas where concrete has an exposure to seacoast or sea water or soil or ground water. Under any such instances, the concrete is vulnerable to sulphates attack in large amounts and can cause damage to the structure. Hence, by using this cement one can reduce the impact of damage to the structure. This cement has high demand in India.
  • Rapid Hardening Portland Cement: The texture of this cement type is quite similar to that of OPC. But, it is bit more fine than OPC and possesses immense compressible strength, which makes casting work easy.
  • Ordinary Portland Cement (OPC): Also referred to as grey cement or OPC, it is of much use in ordinary concrete construction. In the production of this type of cement in India, Iron (Fe2O3), Magnesium (MgO), Silica (SiO2), Alumina (AL2O3), and Sulphur trioxide (SO3) components are used.
  • Portland Pozolona Cement (PPC): As it prevents cracks, it is useful in the casting work of huge volumes of concrete. The rate of hydration heat is lower in this cement type. Fly ash, coal waste or burnt clay is used in the production of this category of cement. It can be availed at low cost in comparison to OPC.
  • Oil Well Cement: Made of iron, coke, limestone and iron scrap, Oil Well Cement is used in constructing or fixing oil wells. This is applied on both the off-shore and on-shore of the wells.
  • Clinker Cement: Produced at the temperature of about 1400 to1450 degree Celsius, clinker cement is needed in the construction work of complexes, houses and bridges. The ingredients for this cement comprise iron, quartz, clay, limestone and bauxite.
  • White cement: It is a kind of Ordinary Portland Cement. The ingredients of this cement are inclusive of clinker, fuel oil and iron oxide. The content of iron oxide is maintained below 0.4% to secure whiteness. White cement is largely used to increase the aesthetic value of a construction. It is preferred for tiles and flooring works. This cement costs more than grey cement.

Apart from these, some of the other types of cement that are available in India can be classified as:

  • Low heat cement
  • High early strength cement
  • Hydrophobic cement
  • High aluminium cement 
  • Masonry cement

 

In detail:

ORDINARY PORTLAND CEMENT:

Ordinary Portland Cement (OPC) is manufactured in the form of different grades, the most common in India being Grade-53, Grade-43, and Grade-33. OPC is manufactured by burning siliceous materials like limestone at 1400 degree Celsius and thereafter grinding it with gypsum.

  Ordinary Portland Cement-Grade 43: Having been certified with IS 8112:1989 standards, Grade 43 is in high demand in India and is largely used for residential, commercial, and other building construction purposes. It has a compressive strength of 560 kg per square cm. Today OPC 43 is most widely available in Gujarat through an extensive distribution network.

  • Ordinary Portland Cement-Grade 53: Having been certified with IS12269:1987 standards, Grade 53 is known for its rich quality and is highly durable. Hence it is used for constructing bigger structures like building foundations, bridges, tall buildings, and structures designed to withstand heavy pressure.

As such, Ordinary Portland Cement is used for quite a wide range of applications. Some of the Ordinary Portland applications are in pre-stressed concrete; dry-lean mixes, durable pre-cast concrete, and ready mixes for general purposes. The chemical components of Ordinary Portland Cement are Magnesium (MgO), Alumina (AL2O3), Silica (SiO2), Iron (Fe2O3), and Sulphur trioxide (SO3).

Ordinary Portland Cement is in great demand in India and will continue to be used in Indian infrastructural upgradation and other constructions.

 

PORTLAND POZZOLANA CEMENT:

Portland Pozzolana Cement is manufactured by blending pozzolanic materials, OPC clinker, and gypsum either grinding them together or separately. Today Portland Pozzolana Cement is widely in demand for industrial and residential buildings, roads, dams, and machine foundations.

Pozzolana is an important ingredient in PPC which is commonly used in the form of:

  • Fly ash

  • Volcanic ash

  • Silica fumes

  • Calcined clay

PPC is resistant to harsh water attacks and prevents the formation of calcium hydroxide at the time of cement setting and hydration. It withstands aggressive gases, thermal cracks, wet cracking, etc. The BIS quality specifications for Pozzolana materials used in PPC have been mentioned below:

  • Fly ash - IS 3812:1981
  • Calcined clay - IS 1344:1981

PPC is used in heavy load infrastructure and constructions such as marine structures, hydraulic structures, mass concreting works, plastering, masonry mortars, and all applications of ordinary Portland cement.

 

 

 

 

 
 

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