Ordinary Portland Cement (OPC)
Features:
OPC 43 Grade cement produced by TNPL is used for heavy duty floors, plastering, pre-cast concrete modules, concrete blocks and pipes. OPC – 43 Grade cement has higher strength and is used for construction of buildings, roads, culverts and water storage applications.
| Chemical Requirements | |
| Loss on Ignition % | 0.8-1.0 (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) |
| Physical Requirements | |
| Fineness (Blaines) M*M/Kg | 300-350(225 min) |
| Le - Chatelier Expansion MM | 1-2 (10 max) |
| Autoclave Expansion %< | 0.1(0.8 max) |
| Setting Time-Initial MIN | 90-120(30 min) |
| Sulphuric Anhydride(SO3) % | 1.8-2.2(3.5 max) |
| Compression Strength 3days MPa | 30-32(23 min) |
| Compression Strength 7days MPa | 38-43(33 min) |
| Compression Strength 28days MPa | 48-53(43 min) |
| Setting Time Final MIN | 150-180(600 max) |
Application: Construction of Buildings, Construction of Roads, Construction of Culverts, Construction of Water Storage
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