Ordinary Portland cement (OPC) 53 Grade cement
53 Grade OPC
Ordinary Portland Cement (OPC) is one of the most popular building materials used all across the globe. There is a fascinating story behind the naming of this widely used cement product. The name ‘Portland’ was given by the British cement manufacturer, Joseph Aspdin in 1824, due to its strong resemblance to Portland Stone, a type of white grey limestone found in the isle of Portland, Dorset in England. Joseph Aspdin is also credited to have patented the first true artificial cement, which he named as the Portland cement.
OPC 53 Grade Cement: Key Features
While the chief chemical constituents of ordinary Portland Cement (OPC) are Calcium, Silica, Alumina and Iron, cement manufacturers continuously research and make efforts to further strengthen and improve the quality and other features of this particular type of cement.
At JK Lakshmi Cement, we offer the 53 Grade OPC Cement which gives even higher cement strength to match the rising demands of higher strength building material in the urban world.
53 Grade OPC Cement: Ideal for the following applications
- High-rise buildings
- All types of R.C.C. works
- Industrial works
- Pre-stressed concrete work like bridges, silos, etc.
- Pre-cast elements such as Railway sleepers and concrete poles
Specifications: 53 Grade Cement
|Parameter||JK Lakshmi Cement 53 Grade||IS:12269|
|Sp. Surface (m2/kg.)||340 ± 10||225 m2/kg. minimum|
|Setting Time (in minutes)||Initial||100 ± 5||30 minutes minimum|
|Final||150 ± 5||600 minutes maximum|
|Expansion||Le-Chatelier Expansion (in mm)||1.5 mm max.||10 mm maximum|
|Autoclave Expansion (in %)||0.17%||0.8% maximum|
|Compressive Strength (MPa)|
|40 ± 2||27 MPa minimum|
|7 Days||50 ± 2||37 MPa minimum|
|28 Days||61 ± 2||53 MPa minimum|
When it comes to different grades of cement, the 53 Grade OPC Cement provides consistently higher strength compared to others. As per the Bureau of Indian Standards (BIS), the grade number of a cement highlights the minimum compressive strength that the cement is expected to attain within 28 days. For 53 Grade OPC Cement, the minimum compressive strength achieved by the cement at the end of the 28th day shouldn’t be less than 53MPa or 530 kg/sqcm.
OPC 53 Grade and OPC 43 Grade Cement are similar in chemical composition but different in the grinding process. During the final stages of the grinding work, the higher grades cements are ground much finer which imparts more durability and strength to the cement.