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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
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Technical Specification
Chemical Properties
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Loss on ignition %
0.8-1 (5.0 max)
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Insoluble Residue %
0.5-0.8 (4.0 max)
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Chloride Content %
0.02 (0.1 max)
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Magnesia (MgO) %
1.4 – 1.8 (6.0 max)
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Sulphuric Anhydride (SO3) %
1.8-2.2 (3.5 max)
Physical Properties
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Fineness (Blaines), M2/Kg
350-350 (225 min)
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Le – Chatelier Expansion, mm
1-2 (10 max)
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Autoclave Expansion, %
0.1 (0.8 max)
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Setting Time-Initial, minutes
90-120 (30 min)
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Compression Strength 3days, MPa
30-32 (23 min)
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Compression Strength 7days, MPa
38-43 (33 min)
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Compression Strength 28days, MPa
48-53 (43 min)
Ideal for
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Bridges, Roads, Culverts, Multistorey buildings, Hollow blocks, Pavement blocks, Roof Concrete and column works
Resources
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