Products

ORDINARY PORTLAND CEMENT 53 & 43 Grade

OPC 53 is a higher strength cement to meet the needs of the consumer for higher strength concrete. As per BIS requirements the minimum 28 days compressive strength of 53 Grade OPC should not be less than 53 MPa. For certain specialized works, such as pre-stressed concrete and certain items of precast concrete requiring consistently high strength concrete, the use of 53 grades OPC is found very useful. 53 grade OPC produces higher-grade concrete at very economical cement content. 53 Grade OPC can be used for the following applications.

  1. RCC works(preferably where grade of concrete is M-25 and above)
  2. Precast concrete items such as paving blocks, tiles building blocks etc.
  3. Prestressed concrete components
  4. Runways, concrete Roads, Bridges etc.

purpose cement in the country today. The production of 43 grade OPC is nearly 50% of the total production of cement in the country. The 43 grade OPC can be used for following applications.

  1. General Civil Engineering construction work.
  2. RCC works
  3. Precast items such as blocks, tiles, pipes etc.
  4. Asbestos products such as sheets and pipes
PORTLAND POZZOLANA CEMENT (PPC)

The Star Portland Pozzolana Cement is a kind of Blended Cement which is produced by either inter-grinding of OPC clinker along with gypsum and pozzolanic materials in certain proportions or grinding the OPC clinker, gypsum and Pozzolanic materials separately and thoroughly blending them in certain proportions. Pozzolana is a natural or artificial material containing silica in a reactive form. It may be further discussed as siliceous and aluminous material which itself possesses little, or no cementitious properties but will in finely divided form and in the presence of moisture, chemically react with calcium hydroxide at ordinary temperature to form compounds possessing cementitious properties. It is essential that pozzolana be in a finely divided state as it is only then that silica can combine with calcium hydroxide (liberated by the hydrating Portland cement) in the presence of water to form stable calcium silicates which have cementitious properties with Highest 1 day strength of around 16 Mpa. The pozzolanic materials commonly used are:

  • Volcanic Ash
  • Calcined clay
  • Fly Ash
  • Silica Fumes

The Indian Standards for Star Portland Pozzolana Cement have been issued in two parts based on the type of pozzolanic materials to be used in manufacturing of Portland Pozzolana Cement as given below:

  • IS 1489 (Part 1) 1991, Portland Pozzolana Cement specification (fly ash based)
  • IS 1489 (Part 2), Portland Pozzolana Cement specification (Calcined clay based)
  • The quality of flyash or calcined clay to be used in manufacturing of PPC is also specified by BIS in the following standards:
  • IS 3812 1981 – specification for flyash as pozzolana and admixture
  • IS 1344 1981 – specification for calcined clay pozzolana

The Star Portland Pozzolana Cement is ideally suited for the following construction.

  • Hydraulic structures
  • Mass concreting works
  • Masonry mortars and plastering
  • Under aggressive conditions.
  • All other application where OPC is used.

 

STAR ANTI RUST CEMENT (ARC)

Star Antirust cement is a special product of Star Cement, developed as a result of several years of tireless research of the R&D section at star cement. Star Antirust cement imparts anti rust and anti corrosive properties in the reinforcing bars hence increasing the durability and service life of the structure. Salient features of star antirust cement are enlisted as below:-

  • Specially designed for concrete
  • Protects steel from rusting with antirust properties.
  • Super solid setting, ideal for slab casting
  • Facilitated early de-shuttering.
  • Highly DURABLE.

Antirust Cement makes Concrete Greener, Durable & Performing

Antirust Cement protects the steel by forming a protective layer on the reinforcing bars, thereby increasing the chloride threshold resulting in reduction in chloride diffusion & delay in the rate of corrosion with Highest 1 day strength of around 20 Mpa.

 

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The Portland Pozzolana Cement is ideally suited for the following construction.

  • General Civil Engineering construction work.
  • RCC works
  • Hydraulic structures
  • Mass concreting works
  • Marine structures
  • Masonry mortars and plastering
  • Under aggressive conditions.
  • All other application where OPC is used.
PORTLAND SLAG CEMENT

Star Slag cement is most widely used in concrete as part of blended cement.  It works synergistically with Portland cement to increase strength, reduce permeability, improve resistance to chemical attack and inhibit rebar corrosion.  Slag cement is used in virtually all concrete applications A high strength cement forming a Durable concrete with Highest 1 day strength of around 18 Mpa.

Advantages of using Star Slag Cement:-

  • High percentage of glass content.
  • More resistant to sea water & other chemical agents, also increase the sulfate resistance.
  • Specially designed for concrete
  • High Early Strength
  • Ideal for slab casting
  • Highly durable

Applicability of Star slag cement:-

  • Concrete pavements
  • Structures and foundations
  • Mass concrete applications, such as dams or retaining walls
  • Precast and prestressed concrete
  • Pipe and Block
  • Concrete exposed to harsh environments, such as wastewater treatment and marine applications
  • High-performance/high-strength concrete, such as high-rise structures or 100-year service life bridges
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