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TNPL Power Pack
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TNPL Power Pack

Engineered for Endurance

Widely known as the grey cement, Ordinary Portland Cement (OPC) has 96% clinker and 4% gypsum. It is a more economical option and accounts for 50% of the cement produced across India. TNPL manufactures the OPC 43 Grade cement.

Features

  • High resistance to cracking and shrinkage
  • Faster initial setting time
  • Lesser curing period, thus curtailing curing costs
  • High compressive strength in the early stages
  • Superior resistance to sulphate attack due to less C3A
  • Low alkali content provides better protection against alkali-aggregate reaction

Technical Specification

Chemical Properties

  • Loss on ignition %

    0.8-1 (5.0 max)

  • Insoluble Residue %

    0.5-0.8 (4.0 max)

  • Chloride Content %

    0.02 (0.1 max)

  • Magnesia (MgO) %

    1.4 – 1.8 (6.0 max)

  • Sulphuric Anhydride (SO3) %

    1.8-2.2 (3.5 max)

Physical Properties

  • Fineness (Blaines), M2/Kg

    350-350 (225 min)

  • Le – Chatelier Expansion, mm

    1-2 (10 max)

  • Autoclave Expansion, %

    0.1 (0.8 max)

  • Setting Time-Initial, minutes

    90-120 (30 min)

  • Compression Strength 3days, MPa

    30-32 (23 min)

  • Compression Strength 7days, MPa

    38-43 (33 min)

  • Compression Strength 28days, MPa

    48-53 (43 min)

Ideal for

TNPL-Ordinary-Portland-Ideal-for

Bridges, Roads, Culverts, Multistorey buildings, Hollow blocks, Pavement blocks, Roof Concrete and column works

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