Grades of Cement Mortar

Grades of Cement Mortar

Cement Mortar is defined as the homogeneous mixture of cement and sand.

Sometimes the addition of admixture is required in the mortar to make it more resistive towards water and chemicals.

Cement Mortar is defined as the homogeneous mixture of cement and sand.

 

DIFFERENT GRADES OF CEMENT MORTAR

 

Grade Name          Mix (by Loose Volume)Compressive Strength at 28 days (in N/mm2)
CementSand
MM 0.7180.7   to 1.5
MM 1.5171.5 to 2.0
MM 3163.0 to 5.0
MM 5155.0 to 7.5
MM 7.5147.5 to above

 

 

Properties of Cement Mortar:

~ It should be easily workable.

~ It should develop adequate strength in tension, compression, and bond for the work.

~ It should be durable and not affect the durability of other materials.

~ It should set quickly so that the speed of construction is ensured.

~ It should be cheap or cheaply available.

~ It should bind the bricks or stones to give a tight joint through which water cannot penetrate.

~ It should be capable of developing stress.

~ The joints form by mortar should not develop cracks and they should be able to maintain their appearance for quite a long time.

 

 

 Uses of  Cement Mortar:

~ It is used to bind together the brick or stone masonry.

~ It is used to fill up a gap between the brick and stone for making wall weather tight.

~ It is used to give soft even bed between the different layer of brick and stone masonry for equal distribution of pressure over the bridge.

~ It is used in pointing and plastering to protect joints and surface of bricks and stone masonry.

~ It is used to fill up the joints of pipes.

~ It is used to generate the appearance of the structure.

~ It is used to hide the open joints of brickwork or stonework.

 

 

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