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The mix design M-40 grade for Pier (Using Admixture – Fosroc) provided here is for reference purpose only. Actual site conditions vary and thus this should be adjusted as per the location and other factors.

Parameters for mix design M40

Type of cement = O.P.C-43 grade
Brand of cement = Vikram ( Grasim )
Admixture = Fosroc ( Conplast SP 430 G8M )
Fine Aggregate = Zone-II
Sp. Gravity Cement = 3.15
Fine Aggregate = 2.61
Coarse Aggregate (20mm) = 2.65
Coarse Aggregate (10mm) = 2.66
Minimum Cement (As per contract) = 400 kg / m3
Maximum water cement ratio (As per contract) = 0.45

Mix Calculation: –

1. Target Mean Strength = 40 + (5 X 1.65) = 48.25 Mpa

2. Selection of water cement ratio:-
Assume water cement ratio = 0.4

3. Calculation of cement content: –
Assume cement content 400 kg / m3
(As per contract Minimum cement content 400 kg / m3)

4. Calculation of water: –
400 X 0.4 = 160 kg Which is less than 186 kg (As per Table No. 4, IS: 10262)
Hence o.k.

5. Calculation for C.A. & F.A.: – As per IS : 10262 , Cl. No. 3.5.1

V = [ W + (C/Sc) + (1/p) . (fa/Sfa) ] x (1/1000)

V = [ W + (C/Sc) + {1/(1-p)} . (ca/Sca) ] x (1/1000)

Where

V = absolute volume of fresh concrete, which is equal to gross volume (m3) minus the volume of entrapped air ,

W = mass of water ( kg ) per m3 of concrete ,

C = mass of cement ( kg ) per m3 of concrete ,

Sc = specific gravity of cement,

(p) = Ratio of fine aggregate to total aggregate by absolute volume ,

(fa) , (ca) = total mass of fine aggregate and coarse aggregate (kg) per m3 of
Concrete respectively, and

Sfa , Sca = specific gravities of saturated surface dry fine aggregate and Coarse aggregate respectively.

As per Table No. 3 , IS-10262, for 20mm maximum size entrapped air is 2% .

Assume F.A. by % of volume of total aggregate = 36.5 %

0.98 = [ 160 + ( 400 / 3.15 ) + ( 1 / 0.365 ) ( Fa / 2.61 )] ( 1 /1000 )

=> Fa = 660.2 kg

Say Fa = 660 kg.

0.98 = [ 160 + ( 400 / 3.15 ) + ( 1 / 0.635 ) ( Ca / 2.655 )] ( 1 /1000 )

=> Ca = 1168.37 kg.

Say Ca = 1168 kg.

Considering 20 mm : 10mm = 0.6 : 0.4

20mm = 701 kg .
10mm = 467 kg .

Hence Mix details per m3

Cement = 400 kg
Water = 160 kg
Fine aggregate = 660 kg
Coarse aggregate 20 mm = 701 kg
Coarse aggregate 10 mm = 467 kg
Admixture = 0.6 % by weight of cement = 2.4 kg.
Recron 3S = 900 gm

Water: cement: F.A.: C.A. = 0.4: 1: 1.65: 2.92

Observation: –
A. Mix was cohesive and homogeneous.
B. Slump = 110mm
C. No. of cube casted = 12 Nos.
7 days average compressive strength = 51.26 MPa.
28 days average compressive strength = 62.96 MPa which is greater than 48.25MPa

Hence the mix is accepted.

We are thankful to Er Gurjeet Singh for this valuable information.

### 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.

anand says:

Sir,

We need IS code reference for paver block.

Thanks

C. Anand

karthik says:

i would please to know whether concrete of M40 grade can be prepared without the use of any admixture?

yes it can be..refer to IS 10262-1982(reaffirmed 1999)..

gajanan says:

Want to know( Reference) how the % of fine Aggregate and Courese aggregate are assumeed inyour design you have used the aci standard pls give the reference.

vishwas trivedi says:

dear sir,
please send me mix design of grade m-15 to m40 for pqc work, and normal pump able/backet as per is/bs standerd

sachindra says:

R.Manikandan says:

Dear sir

Please send the m25,m30,m35,m40,m45,m50,m55,m60 design mix and rate analysis for all grade concrete

Thanks and regards
R.Manikandan
Bhubaneswar

akshay dalvi says:

sir
i want to know dry/wet weight of 1cum.of M40 concrete.

tajuddin says:

Kindly show the Quantity of Cement, Sand & Crush required for 100 Cubic Feet of Concrete of the following:

For Concrete (For 100 Cubic Feet of Concrete)

For 100 Cubic Feet of Concrete, 1:2:4 (Cement, Sand & Crush)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

For 100 Cubic Feet of Concrete, 1:3:6 (Cement, Sand & Crush)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

For 100 Cubic Feet of Concrete, 1:1 1/2:3 (Cement, Sand & Crush)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

For 100 Cubic Feet of Concrete, 1:4:8 (Cement, Sand & Crush)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

FOR MORTAR (For 100 Cubic Feet of Mortar)

Show the Quantity of Cement & Sand for 100 Cubic Feet of Mortar:

For 100 Cubic Feet of Mortar, 1:6 (Cement & Sand)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

For 100 Cubic Feet of Mortar, 1:5 (Cement & Sand)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

For 100 Cubic Feet of Mortar, 1:4 (Cement & Sand)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

For 100 Cubic Feet of Mortar, 1:3 (Cement & Sand)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

For 100 Cubic Feet of Mortar, 1:2 (Cement & Sand)

Number of Cement Bags=————————-No of Cement Bags

Quantity of Sand=—————Cubic Feet of Sand

OR

Show the Quantity Sand & Crush for 100 Cement Bags for the following:

FOR CONCRETE with 100 Bags of Cement

With 100 Cement Bags, 1:2:4

Quantity of Sand=—————-Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

With 100 Cement Bags, 1:3:6

Quantity of Sand=—————-Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

With 100 Cement Bags, 1:1 1/2:3

Quantity of Sand=—————-Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

With 100 Cement Bags, 1:4:8

Quantity of Sand=—————-Cubic Feet of Sand

Quantity of Crush=—————Cubic Feet of Crush

FOR MORTAR with 100 Cement Bags

With 100 Cement Bags, 1:6

Quantity of Sand=—————-Cubic Feet of Sand

With 100 Cement Bags, 1:5

Quantity of Sand=—————-Cubic Feet of Sand

With 100 Cement Bags, 1:4

Quantity of Sand=—————-Cubic Feet of Sand

With 100 Cement Bags, 1:3

Quantity of Sand=—————-Cubic Feet of Sand

With 100 Cement Bags, 1:2

Quantity of Sand=—————-Cubic Feet of Sand

Shafiq says:

Dear Sir,

have u got the answers of your above subject questioners, if yes, please send me also, I will be thankful to you for this act of kind

tajuddin says:

kindly show the Quantity of cement, sand & crush for different proportions as above mentioned

narayanswamy says:

dear sir,
I thank you for giving design mix calculations for M40.Now I don’t have any touch with formulaes.canu pls.explain me in the calculation of C.A;F.A. why we have to multiply 1/1000. I have forgotten. pls help me.

SURESH says:

dear sir,

please send me the different types of mix designs (m20.m30,m40,m50) for civil,structural and piling works. also send how to do concrete mix design.

regards,

suresh.R

Tonny says:

dear sir,

can you send me the table / grapfic of corelation betwen water and cement also the others table or grapf for calculation the design,
Thanks before

regards,
Tonny

Mathi says:

Please send me the Compressive Strength for M40 Grade of concrete cube test of 7 days & 28 days.

working w/c ratio 0.4 is too difficult and it’s workability is too low.isn’t it?

Vivekanandhan says:

dear sir,

please send me the different types of mix designs (m20.m30,m40,m50) for civil,structural and piling works. also send how to do concrete mix design.

regards,
vivekanandhan

Ali says:

dear sir,

please send me the different types of mix designs (m5,m7.5,m10,m15,m20.m30,m40,m50)and ratio for civil,structural and piling works. also send how to do concrete mix design.

regards,

Hello,

whats the equivalent astm code to the one used ?

NATARAJAN says:

prasad (sir i want to how to make to concrete disign ) says:

sir plesae give to me how to make concrete design.

dhanaji says:

sir
i want to know compressive strength of m-40 grade at 28days asper is IS or IRC on the field lab.it is 40N/mm2 or 44 N/mm2

ANIRUDDHA MORE says:

Dear All,

Anybody please provide me the literature specifying rate of strength gain of concrete produced with PPC. We have a problem at one of our RCC road project. Grade of concrete used here is M40 with PPC. Cement content is 525Kg per Cu.M. All 28 days cubes are giving only 60% of required result.
Kindly provide any solution to this problem and if possible supporting articles.

Regards