Ordinary Portland cement is the most usual type of cement that is widely used around the world.  OPC was developed from natural cement made in Britain at the commencement of the 18th century.  The most common purpose of OPC is in the production of concrete.  Concrete is a composite fabric consisting of aggregate, sand, cement and water.  As a constructing material, concrete can be casted in almost any form, which is desired, and once it hardens, it becomes structural element.  Concrete is used in the construction of structural elements like column, beams slab for building structure and it can also be used in structures of road, bridge, dams etc. OPC is also used in fillings for plasters and screeds and punning works.  OPC is manufactured by burning limestone with required amount of Silica, Iron and Alumina at 1400 degree Celsius to form the nodules called Clinker and thereafter grinding it with gypsum it is made up in the form of OPC cement of different grades. In Nepal, the most common grade of cement are Grade – 53 and Grade 43.

Shivam Cement manufactures two types of Ordinary Portland Cement, termed as, OPC Cement, which is based on NS-572 – SHIVAM OPC 43 Grade and SHIVAM OPC 53 Grade. Both these Cements are manufactured with the mixture of clinker and gypsum as the Raw Material for their Product. Both the Grades are manufactured by inter grinding of high-grade Clinker, which is produced locally by the self-owned lime stone quarries of the company and right quality Gypsum in appropriate ratios, which is purchased from Bhutan. 

OPC 43 Grade cement is a type of Ordinary Portland Cement with specific characteristics that make it suitable for various construction applications. The "43" in its name refers to the compressive strength it possesses in megapascals (MPa) after 28 days of curing. This grade of cement is commonly used for general construction purposes where moderate strength is required. This type of OPC cement is majorly used in the concrete up to M35 grade. 

Shivam Cement places a strong emphasis on quality assurance. Shivam OPC 43 Grade cement undergoes rigorous testing every hour to ensure it meets the specified standards and adheres to the company's commitment to delivering high-quality products.

Shivam OPC 43 Grade are engineered with specific chemistry and particle size distribution to offer:

  • Higher Blaine for better strength in Concrete.
  • Moderate Sulphate resisting properties.
  • Very low chloride content to avoid corrosion in steel.
  • Low heat of hydration resulting in a durable structure.
  • Low alkali content and Low MGO

Uses of Shivam OPC 43 Grade are:

  • All general and semi- specialized construction works like plain and reinforced cement concreting, brick and stone masonry, plastering and flooring.
  • Suitable for hydroelectric projects
  • Residential and commercial building construction.
  • Manufacturing of Hume pipes, Inter-locking tiles, blocks and poles
  • Pre-cast and pre-stressed construction works below M35.

Generally, 43 grade cement is more economical compared to 53 grade cement. It is a cost-effective option for projects with moderate strength requirements.