**Which Grade of Cement is Best for Slab or Building Construction**

In this Article today we will talk about the **Grade Cement is Best for Slab | Best Cement for House Construction | Types of Cement Grades | Grades of Cement | Different Grades of Cement | Cement used in Construction**** | Ordinary Portland Cement | 43 Grade Cement | 53 Grade Cement**

**Introduction of Cement**

**Cement** is one of the most** important engineering construction materials**. It is widely used in the **construction of various Structures**.

It is the **key ingredient of the concrete**. Concrete is made by **mixing sand, aggregate, and cement along with water in the fixed proportion**. The Strength of the** Concrete is mainly achieved by the Cemen**t.

In this article, you will get to know about** different grades of cement**, their properties, and uses. **Best Cement for House Construction**

**Introduction of OPC**

OPC is one of the most important** types and widely used cement in the Construction Industry**. **OPC Cement full form Ordinary Portland cement.**

Ordinary Portland cement (OPC) is the** commonly used cement around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout.**

The Ordinary Portland Cement is mainly c**ategorized into three types, which are 33-Grade Cement, 43-Grade Cement, and 53-Grade Cement. **This grade of cement is **classified depending upon the compressive strength of the cement,** which is tested after 28 days.

**Compressive Strength of Cement =( Apply Load / Unit Area) Best Cement for House Construction**

The unit of compressive strength is** N/mm ^{2 }**

**Which Grade of Cement Is Used for Slab**

Ordinary Portland cement of **53 Grade** is suitable for all **types of RCC structures** and is mainly used for the **construction of slabs**. Because in the **Construction of slabs, initial and ultimate strength is the major structural requirement.**

The **53 Grade Cement is highly preferred for the construction** of the **structures which require high strength such as the construction of high rise building and bridges. Types of Cement Grades**

**Types of Cement Grades**

There are **different grades of cement,** which are specified by **IS 1489: 1991 as** below of **cement grade list.**

**OPC 33 Grade Cement****OPC 43 Grade Cement****OPC 53 Grade cement**

**OPC (Ordinary Portland Cement) 33 Grade Cement**

The Cement, which has **Compressive strength of 33 N/ mm ^{2}** after the 28 days when tested, is known as

**33-Grade Cement.**

Fineness (specific area) of **33 Grade Cement** =** 300 m ^{2}/kg**

**3 days compressive strength**=**16 N/mm**^{2}**7 days compressive strength = 22 N/mm**^{2}**28 days compressive strength = 33 N/mm**^{2}

**Properties of 33-Grade Cement**

- This grade of
**cement has high workability and is mainly used for masonry work and for plastering work**. - The initial strength of
**33 Grade Cement continues to gain even after 28 days**. - The heat of hydration of
**33 Grade Cement is lower as compared to the 43 grade and 53-grade cement.**

**Uses of 33-Grade Cement**

- It is widely
**used in plastering work**. - It is also
**used for the brickwork of walls**. - In the
**tiling work**. - It is generally used for work, which required low
**compressive strength of below M20.**

The Code of reference for** 33-grade cement is IS Code – IS 269: 1989**.

**OPC (Ordinary Portland Cement) 43 Grade Cement**

The **Cement**, which has **Compressive strength of 43 N/ mm ^{2 }**after the 28 days when tested, is known as

**43-Grade Cement.**Fineness (specific area) of

**43 Grade Cement = 225 m**

^{2}/kg**3 days compressive strength = 23 N/mm**^{2}**7 days compressive strength = 33 N/mm**^{2}**28 days compressive strength = 43 N/mm**^{2}

**Properties of 43-Gradee Cement**

- It has
**low chloride content,**so it**doesn’t cause corrosion of steel reinforcement**. - It gives
**good workability of concrete.** - The initial
**strength of 43 Grade Cement continues to gain even after 28 days**. - The
**heat of hydration of 43 Grade Cement is medium**. - This will give a
**better surface finish to the structures.** - It is
**moderately sulfate resisting.**

**Uses of ****43 ****Grade Cement**

- It is
**used in the preparation of Ready Mix Concrete (RMC).** - It is
**used for PCC and RCC work.** - It is used in the
**construction of RCC bridges.** - For
**Construction of Silos and Chimneys.** - It is used for finishing of all
**types of structures like buildings, bridges, roads, and water retaining**structures. - It is used in
**precast and prestressed concrete.** - It is also
**used in Ship form Construction.** - It is used in the
**construction where a grade of concrete up to M30.**

The Code of reference for **43-Grade Cement is IS Code – IS 8112: 1989.**

**OPC (Ordinary Portland Cement) 53 Grade Cement**

The Cement, which has **Compressive strength of 53 N/ mm ^{2}** after the 28 days when tested, is known as

**53-Grade Cement.**

**Fineness (specific area) of**

**53 Grade Cement = 225 m**

^{2}/kg**3 days compressive strength = 27 N/mm**^{2}**7 days compressive strength = 37 N/mm**^{2}**28 days compressive strength = 53 N/mm**^{2}

**Properties of 53 Grade Cement**

- It is a
**Sulphate resisting cement.** - It has
**low chloride content.** - It can be
**used in speedy Construction.** - It
**saves shuttering cost due to early removal.** - The initial
**strength of 53 Grade Cement continues to gain even after 28 days.**

**Uses of 53 Grade Cement**

- It is used the
**construction of concrete sleepers for Railways.** - It is used in
**pre-stressed girders.** - The
**53-Grade Cement achieves early strength**. - It is used in
**industrial buildings roads and runways.** - It is used in the
**construction of RCC bridges and precast concrete.** - Generally used for
**M25 and above concretes.** - It is used in the construction of all
**RCC components like a beam, columns, footings, and slabs.**

The Code of reference for **53-Grade Cement is IS Code – IS 12269: 1987.**

**FAQs:**

**Cement Grade**

You may have heard of terms like **33 ****grade cement** or **53 grade cement**. These are terms used for describing different grades of cement. A grade of cement indicates the strength of** cement **that is measured in Mega pascal (Mpa) or N/mm2. **Cement** is usually **measured after 28 days of curing for a standard cube.**

**Grade of Cement**

The strength gets further measured as the comprehensive strength, which is the moulded **cement** in the standard cube. After 28 days of curing, it gets estimated. The measurements are in Mega-Pascal or N/mm. Generally, there are three types of **cement grades**; 33-**grade**, 43-**grade**, and 53-**grade.**

**Grade Slab**

In construction, a **grade slab** is a relatively flat concrete structure built on top of the soil at ground level. This simple **slab** design differs from the reinforced **slab** technique used for elevated concrete floors, and does not require support from underground footers or foundation walls.

**Q. What Is Grade of Concrete?**

**Grades of concrete** are defined by the strength and composition of the **concrete**, and the minimum strength the **concrete** should have following 28 days of initial construction. The **grade of concrete** is understood in measurements of MPa, where M stands for mix and the MPa denotes the overall strength.

**Grade of Cement Used in Building Construction**

There are commonly three types of **cement used** in general **construction** purposes i.e. Ordinary Portland **Cement** (43 **Grade** & 53 **Grade**), Portland Pozzolana **Cement** and Portland Slag **Cement.**

**Q. What Is Grade of Cement?**

The **grade** indicates the strength of **cement**. Strength is generally measured as compressive strength. Before buying the **cement**, you should check the **grades** because it highly affects the strength of your structure. These are the types & **grades** available in the Market.

**Cement Grading**

The **cement grade** refers to the **cement** compressive strength that means how much strength **cement** can yield or bear. These **cement grades** are classified according to the compressive strength of the **cement**, tested after 28 days.

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**Conclusion:**

Full article on **Grade Cement is Best for Slab | Best Cement for House Construction | Types of Cement Grades | Grades of Cement | Different Grades of Cement | Cement used in Construction**** | Ordinary Portland Cement | 43 Grade Cement | 53 Grade Cement****.** Thank you for the full reading of this article in “**The Civil Engineering**” platform in English. If you find this post helpful, then help others by sharing it on social media. **If any formula of BBS is missing from this article please tell me in comments.**