DIFFERENCE  BETWEEN 43 Grade & 53 Grade

OPC 43 Grade Cement

OPC 43 grade cement is (Conforming to IS: 8122-1989) a cheaper comparative to OPC 53 grade cement. OPC 43 grade cement also has fine grinding of clinkers but comparatively less than OPC 53. This causes it to have a slower gain in strength when compared with 53grade  and also the comparative lack of magnesium by a difference of -0.01%. This percentage of magnesium content affects the heat of hydration performance. Due to this the 43grade cement gains the strength slower.

Advantages of 43grade cement:

• Due to the low heat of hydration comparative to 53grade. it develops less cracks

• no need to take extra precautions while laying concrete slabs.

• by using this we can reduce the leeching effects.

• it is less cost comparative to 53grade

Disadvantages of 43grade cement:

• it gains strength slower comparative to 53grade. due to this de-shattering of form work will take more time comparative to 53grade

OPC 53 Grade Cement

OPC 53 grade cement is (Conforming to IS:12269-1967) the most preferred building material for construction of projects where require high tensile strength. As 53 grade cement has the grinding of clinkers to the maximum extent and this cement grade is finer than grade 43.

The fineness in cement generates early gain in strength, but along with high heat of hydration.  however, is further supported in by magnesium strength which is 6.01% in OPC 53, only 0.01% higher than that in OPC 43. These differences cause a difference in potential phase composition of clinker which affects the final compressive strength.

The heat of hydration in the 53grade cement is very high which triggers reaction to get maximum strength in less time compare to the 43 grade. Because of this advantage the 53grade cement is most preferred building material in the construction industry. which enables the early de-shattering the form work in the construction projects

Advantages of 53grade cement:

• Due to the Quick heat of hydration it gains maximum strength in less time than 43grade.

• work progress will be more in construction sites. because it reduce the De-shattering time in site

43 Grade of cement :

                                     The 53 grade of cement is used for general civil construction works which is under normal expose(environmental) conditions. the average compressive strength of cement mortar attained after 28 days (6724 hours) in mega pascals (Mpa) of at least three mortar cubes of face area ( 50 cm squared) composed 1 part of cement and 3 parts of sand(conforming to IS 12269) by mass and P/4 (P is the percentage of water required to produce the past of standard consistence as per IS standards) + 3 percentage( of combined mass of cement plus sand )of water,prepared, stored and tested.

                        53 Grade OPC is a higher strength cement to satisfy the requirements of the buyer for higher strength concrete. As per BIS requirements the minimum 28 days compressive strength of 53 Grade OPC shouldn't be less than 53 MPa. For certain specialized works, like pre-stressed concrete and certain items of precast concrete requiring consistently high strength concrete, 53 grade OPC is found very useful. 53 grades OPC produce higher-grade concrete at very economical cement content. In concrete mix design, for concrete M-20 and above grades a saving of 8 to 10 you look after cement may be achieved with the utilization of 53 grade OPC.

• 53 Grade OPC will be used for the subsequent applications.

• RCC works(Preferably where grade of concrete is M-25 and above)

• Precast concrete items such as paving blocks, tiles building blocks etc.

•  Pre-stressed concrete components

• Runways, concrete Roads, Bridges etc.