Sunday, September 21, 2014

CALCULATION OF CEMENT AND SAND QUANTITY IN MORTAR

CALCULATION OF CEMENT AND SAND  QUANTITY IN MORTAR

In the building construction, we use cement mortar for civil works from the foundation up to the roof top.


Ex: Rubble Masonry, Brick Masonry, Plastering, etc.

The proportion of mixing of cement and sand will vary depend on the application of the particular work. Therefore, contractors must know what should be the mixing ratio according to the BOQ and specifications. If not required quality and strength will not be there with construction work.





Now let's go for the quantity of cement and sand calculation in mortar for 1 Cu of dry volume.


Assume that for 1 Cu of dry volume required 1.33 Cu of cement and 1.33 Cu of sand of wet volume. Which means to create a 1 Cu of a dry mortar volume is required 1.66 Cu of a wet mortar volume.


Shall take the proportion of cement and sand is 1:X


Therefore required volume of sand can be calculated from bellow equation;




Sand Quantity in Cement Mortar

Required Cement bags (50kg) can be calculated from bellow equation. 




Cement Quantity in Cement mortar


Note: Units are should be in Cu


Example: 


1. Calculate the required amount of cement and sand for 3.2 Cu of mortar in 1:5 mix.













    

23 comments:

  1. Can we use it in concrete? If yes,what is the formula for coarse aggregate?

    ReplyDelete
    Replies
    1. No, we cannot use this formula for concrete. The formula for concrete is changed depend on the grade of the concrete that you need to practice.

      Delete
  2. Why is the formula for sand "wet sand"?

    ReplyDelete
  3. I don't want to know how to build a house. I need to know what quantities of cement to sand I need to buy to cement a two brick high wall for an artificial garden

    ReplyDelete
  4. I don't want to know how to build a house. I need to know what quantities of cement to sand I need to buy to cement a two brick high wall for an artificial garden

    ReplyDelete
  5. Thank you for sharing this blog related to the quantity analysis of the mixer used in the construction field,thanks to you once again.
    Concrete suppliers

    ReplyDelete
  6. What the hell is this?
    In 3.2 cum - 72.85 nos of bags are used?
    Means 3642.5 kg of cement required?
    What are you saying man.
    Take a look on this

    ReplyDelete
    Replies
    1. It is for 3.2 cu

      3.2 * 2.83 cum
      9.06 cum

      Delete
    2. the requirement of cement for 3.2 cubic meters of cement sand mortar of ratio 1:5 is 25 bags please check your calculations javed paracha

      Delete
    3. Yes you are correct and I'm also correct. :) for 3.2cum it's 25 bags but for 3.2 cu it's 72.25 bags (1cu =2.83m3)

      Delete
  7. how to calculate the quantity of mortar (1:4) required in 1 cum of RRM wall.

    ReplyDelete
  8. Very well done. Absolutely brilliant information. I'm in love with this blog. they always provide such a great information. plaster sand bags

    ReplyDelete
  9. Why its devided by 0.0123 when finding the no of cement bag? its confuced for me.

    ReplyDelete
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