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Nov 30, 2018 / By System Admin / in Cement & Concrete
53-grade cement is an ordinary Portland Cement (OPC), which is the most widely used cement in India. 53-grade cement attains 27 MPa (compression strength) in 3 Days.
It is also the fastest setting cement among other grades. 53-grade cement only takes 30 minutes for initial setting, a preferred attribute while working on RCC structures.
IS 12269 (1987)
53-grade cement is manufactured by mixing calcareous and argillaceous and /or other silica, alumina or iron, oxide bearing materials, burning them at a clinkering temperature and grinding the resultant clinker.
| Parameters | Unit | Minimum/ Maximum | Required |
|---|---|---|---|
| Fineness | M2/ kg | Minimum | 225 M2/ kg |
| Soundness | |||
| a) By Le Chatelier Method | mm | Maximum | 10 mm |
| b) By Autoclave Method | % | Maximum | 0.80% |
| Setting Time | |||
| a) Initial Time | Mins | Minimum | 30 Minutes |
| b) Final Time | Mins | Maximum | 600 minutes |
| Compression Strength | |||
| a) 72 Hours | Mpa | Minimum | 27 Mpa in 3 Days |
| b) 168 Hours | Mpa | Minimum | 37 Mpa in 7 Days |
| c) 672 Hours | Mpa | Minimum | 53 Mpa in 28 Days |
53 grade OPC cement is available in two packing in India.
1. 50 Kgs bags which is packed in laminated polypropylene bags or paper bags.
2. Bulker cement which is supplied in tankers specially built to transport Cement. They are sold in tonnages and mostly used by ready-mix concrete plants.
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