GRADES OF CEMENTS IS 1489-1991

GRADES OF CEMENTS IS 1489-1991

These are mainly based on the compressive strength of a particular cement. Different grades of cement are Present in civil engineering such as 

1. 33 Grade
2. 43 Grade 
3. 53 Grade

33 Grade-

Define -The cement having strength 33 grade N/mm² after 28 days when tested is called as 33 grade cement.

following specifications of grades

• 33 grade cement is commonly used for general construction work and plastering. 
• It has a compressive strength of 33 N/mm² after 28 days of curing 
• Uses- Plastering, Brickwork, Tiling work
• 3 days compressive strength =16 N/mm²
• 7 days compressive strength =22 N/mm²
• 28 days compressive strength =33 N/mm²

This grade has high workability and is mainly used for mortar in masonry work and for plastering

43 Grade- 

 Define- The cement having strength 43N/mm² after 28 days when tested is called as 43 grade cement.

following specifications of grade

• 3 days compressive strength =23 N/mm²
• 7 days compressive strength =33 N/mm²
• 28 days compressive strength =43 N/mm²

This cement is used in

1. Ready mix concrete
2. P.C.C. and R.C.C. work
3. Pre-cast and prestressed concrete.
4. R.C.C bridges
5. Silos and chimneys.
   

53 Grade- 

 Define- The cement having strength 53 N/mm² after 28 days when tested is called as 53 grade.

 

Used for  RCC structure

 

• 3 days compressive strength =27N/mm²
• 7 days compressive strength =37N/mm²
• 28 days compressive strength =53N/mm²

 This cement is used for

• Concrete sleepers for railways
• Pre-stressed girders
• For M25 and above concretes
• Industrial buildings, roads, runways
• Precast concrete
• RCC bridges
• Lofty buildings
• Slip-form construction.

What are the ingredients of cement- Ingredients Of cement 

Segregation - Causes of Segregation, types etc 

Types of Aggregate

Bleeding and Preventive Measures 

 

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