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Question
How to calculate the Water cement ratio of reqiured 
compressive Strength of concrete?
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
as the density of water is 1. if we multiply the water
cement ratio with the cement being used , we will get the
amount of water. For example if water cement ratio is 0.45
and cement being used is 400 kg per cum, then the water
required will be 0.45x 400=180 litres per cum of concrete.
 
Is This Answer Correct ?    126 Yes 21 No
Ghizal
 
Answer
# 2
The water to cement ratio is calculated by dividing the
water in one cubic meter of the mix by the cement in the
mix (kg).
 
Is This Answer Correct ?    99 Yes 48 No
Bola Oluyemi
 
 
 
Answer
# 3
i really dont know pls mail me the correct answer with
calculations for 1:2:4 mix, 1;1.5:3mix, 1:4:8mix.including
volume of cement, sand ,aggregate.thank u.
 
Is This Answer Correct ?    39 Yes 19 No
Yoga Annad
 
Answer
# 4
From Water cement Chart,
First you get what type of cement you used & than comapire
with your target mean strength of Concrete from chart you
get W/C ratio, which helps you to get Qty of Sand &
Aggregate
 
Is This Answer Correct ?    27 Yes 9 No
Prakash Choudhari
 
Answer
# 5
From Water cement Chart,
First you get what is the range of compressive strength of
cement at 28 days you used from the quality Test
certificate or manufacturer Test certificate & than
comapare with your target mean strength of Concrete from
chart you
get W/C ratio
 
Is This Answer Correct ?    11 Yes 1 No
Ashok Yadav
 
Answer
# 6
Please go to
http://www.engineeringcivil.com/concrete-mix-design-as-per-
indian-standard-code.html?cp=7
After reading that
click on M-15 mix designs, M-20 etc to get the ratios.

Remember there are ratios based on weight (mass) and volume.
So go through the tables and write down what you want and
explain to the others whether the ratios are by volume or
mass.
 
Is This Answer Correct ?    8 Yes 7 No
S. Subramaniam
 
Answer
# 7
proportion of water required for making homogenius mix and cement required to achieved target strength is called w/c ratio. 
Is This Answer Correct ?    3 Yes 9 No
Bazir Singh Tamatta
 

 
 
 
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