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The mix design M-50 grade (Using Admixture –Sikament) 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 M50**

Grade Designation = M-50

Type of cement = O.P.C-43 grade

Brand of cement = Vikram ( Grasim )

Admixture = Sika [Sikament 170 ( H ) ]

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 = 50 + ( 5 X 1.65 ) = 58.25 Mpa

2. *Selection of water cement ratio:-*

Assume water cement ratio = 0.35

3. *Calculation of water: –*

Approximate water content for 20mm max. Size of aggregate = 180 kg /m^{3} (As per Table No. 5 , IS : 10262 ). As plasticizer is proposed we can reduce water content by 20%.

Now water content = 180 X 0.8 = 144 kg /m^{3}

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4.

Water cement ratio = 0.35

Water content per cum of concrete = 144 kg

Cement content = 144/0.35 = 411.4 kg / m

Say cement content = 412 kg / m

Hence O.K.

5. Calculation for C.A. & F.A.: [ Formula’s can be seen in earlier posts]-

Volume of concrete = 1 m^{3}

Volume of cement = 412 / ( 3.15 X 1000 ) = 0.1308 m^{3}

Volume of water = 144 / ( 1 X 1000 ) = 0.1440 m^{3}

Volume of Admixture = 4.994 / (1.145 X 1000 ) = 0.0043 m^{3}

Total weight of other materials except coarse aggregate = 0.1308 + 0.1440 +0.0043 = 0.2791 m^{3}

Volume of coarse and fine aggregate = 1 – 0.2791 = 0.7209 m^{3}

Volume of F.A. = 0.7209 X 0.33 = 0.2379 m^{3} (Assuming 33% by volume of total aggregate )

Volume of C.A. = 0.7209 – 0.2379 = 0.4830 m^{3}

Therefore weight of F.A. = 0.2379 X 2.61 X 1000 = 620.919 kg/ m^{3}

Say weight of F.A. = 621 kg/ m^{3}

Therefore weight of C.A. = 0.4830 X 2.655 X 1000 = 1282.365 kg/ m^{3}

Say weight of C.A. = 1284 kg/ m^{3}

Considering 20 mm: 10mm = 0.55: 0.45

20mm = 706 kg .

10mm = 578 kg .

Hence Mix details per m^{3}

Increasing cement, water, admixture by 2.5% for this trial

Cement = 412 X 1.025 = 422 kg

Water = 144 X 1.025 = 147.6 kg

Fine aggregate = 621 kg

Coarse aggregate 20 mm = 706 kg

Coarse aggregate 10 mm = 578 kg

Admixture = 1.2 % by weight of cement = 5.064 kg.

**Water: cement: F.A.: C.A. = 0.35: 1: 1.472: 3.043 **

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A. Mix was cohesive and homogeneous.

B. Slump = 120 mm

C. No. of cube casted = 9 Nos.

7 days average compressive strength = 52.07 MPa.

28 days average compressive strength = 62.52 MPa which is greater than 58.25MPa

Hence the mix accepted.

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

Dear sir,

Please i want correct technical reason for we are following the height restriction at brick masonry i.e (MAXIMUM 1 M HEIGHT SHOULD BE IN A DAY)

Thanks for your information sir , Sir Please i want Details of M-10,M-7.5 Details

thanks for this M50 mix design, but i dont know why you have taken 2.5 times more mterial than your previus calculations. ….madan ambulgekar.

thanks sir……….. for share ur knwldg wth us , by ths we get a proper inf. abt mix design of concrete for various grade

dear

wt is C10, C15, C30, C35

can u please help me

provide me with ratio like (1:2:4) thnx

normaly C means grade of concrete(class) so in GCC country and american system only called Class only.

Here we are using targermean strength.for Ex: they told C-20 concrete,this concrete fck=20 * 1.25=25kn/mm2.so,this concrete grade M-25.

thanks sir……….. for share ur knwldg wth us

Sir, i want Details of M-60 mix design Details.i was produce R.C. pile for piling work use.Thanks for your information

Sir, i want details of M50 mix design as per 10262:2009.

plz help

sir, In M5o grade mix design, instead of 20 mm aggregate,Can we used 10 mm agg.only in structural member? what is the effect as per load distribution? ( Concrete used for Column)

Thanks a lot for valuable information . Dear sir,in two way slab can we put main bar at either side if spacing and dia of bar is same ?

sir , plz detail m-50 grade mix designe use opc53 grade cement

We are the lead manufacturers of reinforced concrete pipe in Oman,with 0 mm slump( we call it as dry cast),we are observing the more pin holes,air bubbles on concrete surface> we are removing the pipe from core and mould with in 5 min.Our proportions are 20mm:10mm:C.sand:Dune Sand -25:20:35:10 ratio.What is the reason? How we will mininize? we are suffering a lot with this problem

how to do durability test for m60 in scc?

What is the curing procedure of M50 Concrete

sir please mail me correct method for calculating requriement of diffrent construction material..like sand metal stone etc..

Any mixing time is there (Pan mixer) for mixing of M50 grade concrete with glenium B233 admixture??

Please sir,how to find W/C ratio ?

Maximum cement content present in concrete per m3 ???

What type of admixer we can use for improving a strenth ? basically

M-50

Sir,

I need a mix ratio for 45Mpa paviour blocks