How to calculate exactly the weight of sand cement and water in mix ratio 1:3?

Join TheConstructor to ask questions, answer questions, write articles, and connect with other people. When you join you get additional benefits.

Log in to TheConstructor to ask questions, answer people’s questions, write articles & connect with other people. When you join you get additional benefits.

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

## aviratdhodare

Since you have not mentioned whether the 1:3 cement sand mortar is as per weight batching or volume batching, here I’ll describe the process for both the types.

Weight batching:

Quantities of different constituents are,

If the sand used for this mix contained adsorbed water equal to 5% of weight of sand, the calculations would change as follows:

Quantities of different constituents are,

Volume batching:

Quantities of different constituents are,

If the sand used for this mix contained adsorbed water equal to 5% of weight of sand, which also caused bulking of sand volume by 20% the calculations would change as follows

Quantities of different constituents are,

## Komal Bhandakkar

This answer was edited.## Weight of different ingredient of Mortar 1:3 –

Thank You.

## fathima

the quantity calculated for 1m3 mortar

the ratio is 1:3 for cement and sand

assume shrinkage factor 1.33

now we can calculate for cement for 1m3 mortar=1*1.33*1/4

=0.3325m3

50kg cement bag volume=50/1440=0.0347m3

so cement weight=0.3325*50kg/0.0347=479.1kg

add 10% wastage=479.1+47.91=527.01kg

sand volume=1*1.33*3/4=0.9975cum

add 10% wastgae=0.9975+0.0997=1.0972cum

now assume water-cement ratio=0.6

so water =0.6*527.01=316.2kg=316.2ltr

## poojan

Quantity is calculated for 1 Cu.m of mortar: