Solution by Gharpedia – By the grade of cement as 33/43/53, the values 33/43/53 indicate the compressive strength of cement cube in Mpa (N/mm2) after 28 days of curing, where cement mould size is 7.06 cm*7.06 cm*7.06 cm. However, it would be good to understand the logic and basis of arriving at such values.

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## What is the difference between 33 grade cement and 53 grade cement?

Compressive Strength – For calculation of compressive strength cement sand and water are mixed vibrated and cured and cubes are made. These cubes are tested in the laboratory at 27°C after 3 days, 7 days and 28 days. Cement grade indicates the compressive strength of cement concrete after 28 days of setting.

S.No. | Grade of Cement | Compressive Strength in 3 days (N/mm 2 ) | Compressive Strength in 7 days (N/mm 2 ) | Compressive Strength in 28 days (N/mm 2 ) |

1. | 33grade | 16 | 23 | 27 |

2. | 43grade | 22 | 33 | 37 |

3. | 53grade | 33 | 43 | 53 |

Strength of 33, 43 and 53 Grade Cement in 3, 7 and 28 days Also, Read – AAC Blocks – Properties, Advantages, Disadvantages and Laying Process.

### What is the compressive strength of OPC 33 cement?

Grades Of Cement –

OPC 33 Grade OPC 43 Grade OPC 53 Grade PPC Grade Cement PSC Grade Cement Super Grade Cement

Out of all the 6 grades, let’s dig deeper to know about 33, 43, and 53 Cement grade. OPC 33-grade cement indicates the regular portland 33-grade cement. Here, the number 33 addresses the compressive strength of cement. Moreover, if, after 28 days, cement mortar cubes are tried for compressive strength, it should be more than 28 N/mm for OPC 33 grade cement.

- OPC 33 grade cement isn’t prescribed to be utilized for making a concrete blend of higher grade (More than M20).
- It very well may be used where the strength of cement is certifiably not a major element.
- As higher grade cement than 33 is available in the market today, the OPC 33 grade is less utilized for any crucial work.

Because of the upgraded grades in cement, most cement-producing organizations have halted their creation for a long time. The OPC cement grade 43 gives compressive strength towards the end of 28 days of curing is 43 N/mm. The cement grade-43 is made by many organizations today.

It tends to be utilized for preparing precast concrete components, fence posts, and so on. This cement grade is generally suggested for work where strength and lower setting time can be acknowledged during development. Like cement grade-33, grade 43 is also used less in some areas, as cement grade 53 is readily available in the market.

Now, let’s jump onto the third cement grade and know about it. The OPC cement grade 53 is the most famous cement grade utilized in development. The best part of this grade cement is It is used in many construction projects like bridges, roads, dams, buildings, water tanks, tunnels, etc.

- OPC 53 implies that it gives a compressive strength of 53 N/mm when tried for compressive strength according to Indian standard rules.
- It is ideal for all houses, structures, elevated structures, etc.
- In this way, OPC cement grade 53 will be your last decision while buying cement for your construction project.

But, wait, here the trick is Choosing only OPC 53 is not adequate; the cement brand likewise has equivalent significance. Prime Gold is the best cement manufacturer in this industry. You can get in touch with the organization as it is the leading organization in the market today.

### What grade of cement is used for compressive strength?

Compressive Strength – For calculation of compressive strength cement sand and water are mixed vibrated and cured and cubes are made. These cubes are tested in the laboratory at 27°C after 3 days, 7 days and 28 days. Cement grade indicates the compressive strength of cement concrete after 28 days of setting.

S.No. | Grade of Cement | Compressive Strength in 3 days (N/mm 2 ) | Compressive Strength in 7 days (N/mm 2 ) | Compressive Strength in 28 days (N/mm 2 ) |

1. | 33grade | 16 | 23 | 27 |

2. | 43grade | 22 | 33 | 37 |

3. | 53grade | 33 | 43 | 53 |

Strength of 33, 43 and 53 Grade Cement in 3, 7 and 28 days Also, Read – AAC Blocks – Properties, Advantages, Disadvantages and Laying Process.

#### What is the difference between OPC 33 and OPC 43?

This grade of cement is used for general construction under normal environmental condition. But low compressive strength and availability of higher grades of cement have impacted the use and demand of OPC 33. OPC 43 is used for general RCC construction where the grade of concrete is up to M30.