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Mix Design For M35 Grade Of Concrete

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 456-2000) = 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

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Water Absorption:
Coarse Aggregate : 0.5%
Fine Aggregate : 1.0 %

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/ M3 )

Hence, Cement Content= 172 / 0.43 = 400 Kg / M3

Formula for Mix Proportion of Fine and Coarse Aggregate:

1000(1-a0) = {(Cement Content / Sp. Gr. Of Cement) + Water Content +(Fa / Sp. Gr.* Pf )}

1000(1-a0) = {(Cement Content / Sp. Gr. Of Cement) + Water Content +Ca / Sp. Gr.* Pc )}

Where Ca = Coarse Aggregate Content

Fa = Fine Aggregate Content

Pf = Sand Content as percentage of total Aggregates

= 0.36

Pc = Coarse Aggregate Content as percentage of total Aggregates.

= 0.64

a0 = Percentage air content in concrete (As per IS :10262 for 20 mm nominal size of

aggregates air content is 2 %) = 0.02

Hence, 1000(1-0.02) = {(400 /3.15) + 172 +(Fa / 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(1-0.02) = {(400 /3.15) + 172 +(Ca / 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 150-190 mm water reducing admixture brand SP430 from Fosroc with a dose of 0.3 % by weight of Cement shall be used.

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Hence the Mix Proportion becomes:

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/ M3

Cement : Sand: Coarse Aggregates = 1 : 1.6 : 2.907

We are thankful to Er. Ishan Kaushal for this valuable information.

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

If you have a query, you can ask a question here.

152 comments on "Mix Design For M35 Grade Of Concrete"

mohamad mubin says:

thanks for this information , i want to know u considered S.D as 1.91

MOHAMED SITTHIK says:

NOT SUITABLE ASTM METHOD IS DIFFERENT

ashok says:

sir.
please give the definition and mix ratio for m30 grade concrete

hisham hasan alahmed says:

its very coarse for pumping

Franklin ADE says:

What grade of cement was used?

N.RAJ says:

sir
i want the details about calculation of cement content.
in case the cement content will be exceed 450 kg/m3 then what will be do sir. because IS 456:2000 says the cement content should not exceed 450 kg/m3.

Pallab Chakraborty says:

If it is M-40 or M-50 grade concrete then what will be the quantity of cement content, Sir?

Darshana modani says:

Thanks lot for yours valuable information

JP says:

Mix ratio for M35 concrete is 1:1.6:2.907. compressive strength is 35N/mm2 @ 28 days. 1 part of cement, 1.6parts of sand, 2.907 parts of coarse aggregate.
Total sum of ratio=1+1.6+2.907=5.507

cement=(1/5.507)*1.5=0.2723807 cubic-mtr =0.2723807*1440=392.228 bags
sand=(1.6/5.507)*1.5=0.435809 cu-m
agg.=(2.907/5.507)*1.5=0.7918 cu-m

vasant Ajmeri says:

As per IS code what is the maximum Qty. of Admixture used in concrete M35?

Sachendra kumar Tiwari says:

how much quantity of sand,coarse aggregate and cement is used in m35 grade concrete? kindly reply to my comment or mail me for the same asap.

srinivas says:

Dear JP sir,
you replayed 31-oct-2013 to Pallab. In that what is the value 1.5 and 1440. Please clear this.

pushpendra says:

hello sir i want to ask you explne me m 30, m35 , m40, m45, m50 ,how much the mix ratio

Zaheer says:

I was expecting something new from formulas but its same what we studied in 1981 mix ratio 1:1.3:3

Birender Singh says:

i want to know the strength of M15, M20, M25, M35, M40, M45 for 7 days and 28 days.. Kindly clear my doubt.

jai says:

How to find rate of column 9*9 inch length 15foot . what Is total cost of concrete and steel with explanation?

riazuddin mhammad says:

dear ,

please i want to know what is the main purpose reason for using max.10mm aggregate for pile constructions,
thank you.

S.A. ekanayake says:

How to correct processes of make m35 concrete

bipin joshi says:

sir how to convert mix design of m35 to mix design of self compacting concrete

misnomer says:

I want study concrete design 4 m35 used zone 3 river sand..

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