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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

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 / m3
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 /m3 (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 /m3

4. Calculation of cement content:-
Water cement ratio = 0.35
Water content per cum of concrete = 144 kg
Cement content = 144/0.35 = 411.4 kg / m3
Say cement content = 412 kg / m3 (As per contract Minimum cement content 400 kg / m3 )
Hence O.K.

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

Volume of concrete = 1 m3
Volume of cement = 412 / ( 3.15 X 1000 ) = 0.1308 m3
Volume of water = 144 / ( 1 X 1000 ) = 0.1440 m3
Volume of Admixture = 4.994 / (1.145 X 1000 ) = 0.0043 m3
Total weight of other materials except coarse aggregate = 0.1308 + 0.1440 +0.0043 = 0.2791 m3

Volume of coarse and fine aggregate = 1 – 0.2791 = 0.7209 m3
Volume of F.A. = 0.7209 X 0.33 = 0.2379 m3 (Assuming 33% by volume of total aggregate )

Volume of C.A. = 0.7209 – 0.2379 = 0.4830 m3

Therefore weight of F.A. = 0.2379 X 2.61 X 1000 = 620.919 kg/ m3

Say weight of F.A. = 621 kg/ m3

Therefore weight of C.A. = 0.4830 X 2.655 X 1000 = 1282.365 kg/ m3

Say weight of C.A. = 1284 kg/ m3

Considering 20 mm: 10mm = 0.55: 0.45
20mm = 706 kg .
10mm = 578 kg .
Hence Mix details per m3
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

Observation: –
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.

### 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.

Pritul Patel says:

Dear Sir,
Kindly send me Mix design for M-55 grade paver blocks,which is made up of only crushed sand with 0-4 mm & cement.

pravin patil says:

Dear sir,
Kindly send me mix design M – 45 grade

vijaykumar says:

Dear Sir
Please send me article regarding preparation of MIx desing

abhijeet says:

Dear Sir,
Kindly send me Mix design for M-50 grade using waste glass in replacement of aggregate

ARIJIT ROY says:

Sir,we have considered vol of conc=1.Then we have deducted the total vol of cement,water & admixture from 1.but we have not considered the entrapped air.If maximum size of coarse aggregate used say,20 mm,then entrapped air will be 2%.Enteapped air will be taken into account or not?Please help in this regard.-ARIJIT ROY

RAJ says:

can we desing concrete mix design with 100% CRF, if so what is ITS RELIABILITY AND DRABILITY

Patil Jignesh B says:

Dear sir
kindly send me mix design for M-15,M-20,M-25,M-30,M-35,M-40,M-50 grades using wast glass of aggregate

Ramakrishna.sp says:

sir please send me the design of road work mix design by using 40mm size

Ramakrishna.sp says:

kindly send me mix design for M-15,M-20,M-25,M-30,M-35,M-40,M-50 grades using ppc and fly ash

sir,
please send me mix design for m 35 with crushed sand because non avalibality of sand in uor locality please do needfull help

Susanta Panigrahy says:

Dear Sir,

Can you please send me detailed Mix design as per IS codes

Sk Sarifuddin says:

kindly send me mix design for M-15,M-20,M-25,M-30,M-35,M-40,M-50 grades using ppc and fly ash

yogesh says:

plz send mix design of M-45 and M-35 .

BHARATHI KANNAN says:

SIR PLZ SEND CONCRETE MIX DESIGN FOR M-10,M-15,M-20,M25,M30,M35,M40,M45,M50,M60,M70……..

Vallabh Parnar says:

what is minimum cement content for M35, M40 & M60 Grade of Concrete

M.B. FARAS says:

I WANT TO KNOW @ CEMENT CONSUMPTION FOR GRADE M-5 TO M – 60

Mr. Jayant.A.Kothari. says:

The easiest way for doing Mix-design. 1- a/100 = 1/1000(W+C/3.15+ FA/ PXSqFA) for fine aggregate. 1-a/100=1/1000(W+C/3.15+CA/PX1-SqCA)

Kuldeep verma says:

Dear sir
Plz send me m-25grade using jaypee opc-43cement

riyaz says:

m-25 1:1:2

shahidnaveed says:

Hi Mr Reddy,

Please suggest if we get concrete slump more then the required slupm for example required slamp 100 (+,- 25) and also suggest the which material used to controle

R.KARANTAHAMALAI says:

Dear all,
Please send me a High flow concrete Parameters for mix design M70