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The mix design for M35 Grade Of Concrete for pile foundations provided here is for reference purpose only. Actual site conditions vary and thus this should be adjusted as per the location and other factors.
Grade of Concrete : M35
Characteristic Strength (Fck) : 35 Mpa
Standard Deviation : 1.91 Mpa*
Target Mean Strength : T.M.S.= Fck +1.65 x S.D.
(from I.S 4562000) = 35+ 1.65×1.91
= 38.15 Mpa
Test Data For Material:
Aggregate Type : Crushed
Specific Gravity
Cement : 3.15
Coarse Aggregate : 2.67
Fine Aggregate : 2.62
MIX DESIGN
Take Sand content as percentage of total aggregates = 36%
Select Water Cement Ratio = 0.43 for concrete grade M35
(From Fig 2. of I.S. 10262 1982)
Select Water Content = 172 Kg
(From IS: 10262 for 20 mm nominal size of aggregates Maximum Water Content = 186 Kg/ M^{3 })
Hence, Cement Content= 172 / 0.43 = 400 Kg / M^{3}
Formula for Mix Proportion of Fine and Coarse Aggregate:
1000(1a_{0})_{ }= {(Cement Content / Sp. Gr. Of Cement) + Water Content +(F_{a }/ Sp. Gr.* P_{f })}
1000(1a_{0})_{ }= {(Cement Content / Sp. Gr. Of Cement) + Water Content +C_{a }/ Sp. Gr.* Pc_{ })}
Where C_{a }= Coarse Aggregate Content
F_{a }= Fine Aggregate Content
P_{f } = Sand Content as percentage of total Aggregates
= 0.36
Pc = Coarse Aggregate Content as percentage of total Aggregates.
= 0.64
a_{0 }= Percentage air content in concrete (As per IS :10262 for 20 mm nominal size of
aggregates air content is 2 %) = 0.02
Hence, 1000(10.02)_{ }= {(400 /3.15) + 172 +(F_{a }/ 2.62 x 0.36)}
Fa = 642 Kg/ Cum^{ }
As the sand is of Zone II no adjustment is required for sand.
Sand Content = 642 Kg/ Cum
1000(10.02)_{ }= {(400 /3.15) + 172 +(C_{a }/ 2.67 x 0.64)}
Hence, Ca = 1165 Kg/ Cum^{ }
From combined gradation of Coarse aggregates it has been found out that the proportion of 53:47 of 20 mm & 10 mm aggregates produces the best gradation as per IS: 383.
Hence, 20 mm Aggregates = 619 Kg
And 10 mm Aggregates = 546 Kg
To obtain slump in the range of 150190 mm water reducing admixture brand SP430 from Fosroc with a dose of 0.3 % by weight of Cement shall be used.
Cem 
W/C 
Water 
Sand 
20mm 
10mm 
Admix 
400 
0.43 
172 
635 
619 
564 
1.2 
1 

0.43 
1.6 
1.547 
1.36 
0.003 
Units – Kg/ M^{3}
Cement : Sand: Coarse Aggregates = 1 : 1.6 : 2.907
We are thankful to Er. Ishan Kaushal for this valuable information.
If you have a query, you can ask a question here.
this is first step for all engineers and this data make it very easy for quality assurance.
thank you to all who have done this.
it is very useful for future
This is cool,very enlightining and useful
Nice work theoretically. Practically it will not be possible to achieve M35 by this Mix. So if u hav to actually achieve this strength it should be 1:1:2
Do you know mix design? if no think before comment any body
Dear Admin i am doing my Mtech now.
I need mix design for M25 and M30 grades.
Please provide information.
Thank you in advance..
hello,
plz mail me the best and the cheap mix design in which we can reduce the maximum quatity of cement using BASF and RHEOP LAST admixture.
pl send me concret mix design m30 for bogibeel bridge oe 4.315 km
It is very useful.Thanks a lot
sometimes we need manual mixing at that time it is very useful to know
the exact mix proportion of M35.
it really useful data.
thanks
I am working persons , don’t have time to go through books ,
it is very helpfull to me for design mix for reference
very usefull
itis very useful,thank u very much
its very good sir, but have to mention suitability of that grade also. can be change the way representation????
Thanks alot for ur…….
this is very useful inforation for me
this is very useful for freshers as well as for experienced engineers.
thanks.
it is very useful for me…..
thank you
what abaoth specyfication mix desing for 25 MPa,
Dear sir,
Thank you for your information. But there is difference between ISI, ACI and other International standards. Which are the actual norms?. We are
working for U.S. Army Corps of Engineers. They will accept only ASTM or AASHTO Standards. While we are submitting the test reports, we are in
confusion. If you inform us the above standards for 10 Mpa to 40 Mpa, we will be greatfull to you. Otherwise create a calculator for automatic
calculations.
Thanks and regards,
Vijay.P.S.R.,
Project Manager,
HCC, Kabul.
Thank you!