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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**

Grade Designation = M-40

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 / m^{3}

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 / m^{3}

(As per contract Minimum cement content 400 kg / m^{3})

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/S_{c}) + (1/p) . (f_{a}/S_{fa}) ] x (1/1000)

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

Where

V = absolute volume of fresh concrete, which is equal to gross volume (m^{3}) minus the volume of entrapped air ,

W = mass of water ( kg ) per m^{3} of concrete ,

C = mass of cement ( kg ) per m^{3} of concrete ,

S_{c} = 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 m^{3} 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 m^{3}

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 **

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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.

Sir,

We need IS code reference for paver block.

Thanks

C. Anand

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)..

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.

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

waiting your reply

sir please send me m30 grade mix design with fly ash and addmixture calculations.

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

sir

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

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

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

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

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.

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

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

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?

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

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 ?

sir please send the latest design mix ratio M15,M20,M25,M30,M35etc.., ineed this answer please send immediately

sir plesae give to me how to make concrete design.

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

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