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# Mix Design For M35 Grade Of Concrete

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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.

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

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.

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.

More Entries :
• DEEPAK CHAUHAN January 30, 2012 at 3:39 am

D/Sir,
I am very pleased with the information.If possible Please post M 35 Mix Design using PSC Cement(Ultratech), in SSD condition

• SAIBAL DAS February 5, 2012 at 6:24 am

sir,
i need M30 MIX DESIGN using PPC cement(AMBUJA). IF YOU KINDLY SEND I WILL BE GRATEFULL TO YOU.

• ASLAM S. FAKIR February 16, 2012 at 4:43 am

I am very pleased with the information.If possible Please post M 35 Mix Design using PSC Cement(Ultratech), in SSD condition

• varinder narang February 16, 2012 at 12:04 pm

I do need solution for a problem that we are working on a pre engineered steel building project in which are having problem of major cracks in flooring while we coat the finishing layer what should I do to overcome this problem please help me

• Gn kumawat February 21, 2012 at 9:34 pm

Iam very pleased with the information ,if u post M35 design (opc) using in manglam Cement Ltd. Thank u

• pravas ranjan rout February 23, 2012 at 12:59 pm

D/sir i am very plzd with the information that generally on which grade cement used in M35 propertion&without test can it possible to used all types of cement(EX:-konark,Aultratech…..)

• Nitin Patil March 23, 2012 at 9:18 am

R/Sir this is very useful data for me regarding the M35 design (OPC).Please will u elaborate the water cement ratio calculations for M20?

• Kevin Maingi March 27, 2012 at 5:01 am

sir,
i need M30 MIX DESIGN using PPC cement(Bamburi). IF YOU KINDLY SEND I WILL BE GRATEFULL TO YOU.

• prasad ch April 6, 2012 at 6:46 am

Hi Could you please send the “INITIAL AND FINAL SETTING TIME OF READY MIX CONCRETE” FOR ALL THE GRADE OF CONCRETE. Thanks …

• Rajmohan k May 6, 2012 at 4:22 pm

Thank ful to you sir.

• sbu cele July 24, 2012 at 8:27 am

I need a mix design for 35mpa using PPC OPC CEMI 52.5N without any admitures

• Malik Ilyas Khattak August 8, 2012 at 3:13 am

• Suganya.M August 18, 2012 at 1:31 am

Thank you very much sir…

• skg prsanga August 23, 2012 at 1:40 pm

Thank you sir

• sudheer August 31, 2012 at 8:25 am

what is the recommended cure time for M35 grade?

• Claro AA October 5, 2012 at 7:36 am

How to determine the percentage of sand of total weight of aggregates if your sand grading says at zone M? As your grade M-35 concrete mix design seen 36% of fine aggregate of the total weight of aggregates.

Thank you very much.

• mohan October 15, 2012 at 10:41 pm

Sir, plse send the where we will use the m35 ,m40 graded mixes

• Abdus Siraj December 5, 2012 at 8:05 am

salam.
dear sir
i am very pleased to see you beautifull guidelines
sir i need concrete mix design for class A3(piles) as soon as possible.
your prompt response will be highly appreciated

• harsh vardhan sharma December 7, 2012 at 7:07 am

sir i m also civil er. i want to know how to we use the aggregate dust in concrete industreis.Plz sand me right information.

• Sanjay Charkha December 19, 2012 at 2:02 am

How is it that you have considered Standard Deviation as 1.91 as against 5 prescribed by IS 10262? Thanks