ORDINARY PORTLAND CEMENT (OPC)

OPC is the most popular general-purpose cement, which is manufactured by grinding Portland Cement Clinker and Gypsum. The production of OPC is nearly 50% of the total production of cement in the country.

UTILITY

Reliance OPC is ideally suited for the following applications:

  • General Civil Engineering construction work
  • RCC works (preferably where grade of concrete is up to M-30)
  • Precast items such as blocks, tiles, pipes etc
  • Asbestos products such as sheets and pipes
  • Non-structural works such as plastering, flooring etc

Packaging

ppc

PHYSICAL CHARACTERISTICS

Characteristics Reliance Cement National Standard (NS) 49
Fineness (m2/kg) 335 225
Setting Time (minutes):    
Initial 100 45
Final 215 600
Soundness:    
Le Chatelier (mm) 9 10 Max.
Auto Clave (%) 0.78 0.8 Max.
Compressive Strength (kg/cm²):    
3 days 225 160
7 days 290 220
28 days 440 330

Chemical Characteristics

Characteristics Reliance Cement National Standard (NS) 49
Lime Saturation Factor (LSF) 0.88 0.66 to 1.02 Max.
Alumina to that of Iron Oxide Ratio % 1.14 3.0 Max.
Loss on Ignition (% by mass) 2.14 6.0 Max.
Magnesia (% by mass) 2.01 5.0 Max.
Insoluble Residue (% by mass) 2.00 2.0 Max.
Sulphuric Anhydride (% by mass) 1.68 3.0 Max.
Chloride (% by mass) 0.024 0.05 Max.

Cement is tested at a temperature of 27 ° C +- 2 ° C
The above cement complies with Nepal Bureau of Standards