Concrete Mix Design M-60
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CONCRETE MIX DESIGN (GRADE M60)
(a) DESIGN STIPULATION:-
Target strength = 60Mpa
Max size of aggregate used = 12.5 mm
Specific gravity of cement = 3.15
Specific gravity of fine aggregate (F.A) = 2.6
Specific gravity of Coarse aggregate (C.A) = 2.64
Dry Rodded Bulk Density of fine aggregate = 1726 Kg/m3
Dry Rodded Bulk Density of coarse aggregate = 1638 Kg/m3
Step-1
Calculation for weight of Coarse Aggregate:
From ACI 211.4R Table 4.3.3 Fractional volume of oven dry Rodded C.A for 12.5mm size aggregate is 0.68m3
Weight of C.A = 0.68*1638 = 1108.13 Kg/m3
Step-2
Calculation for Quantity of Water:
From ACI 211.4R Table 4.3.4
Assuming Slump as 50 to 75mm and for C.A size 12.5 mm the Mixing water = 148 ml
Void content of FA for this mixing water = 35%
Void content of FA (V)
V = {1-(Dry Rodded unit wt / specific gravity of FA*1000)}*100
= [1-(1726/2.6*1000)]*100
= 34.62%
Adjustment in mixing water = (V-35)* 4.55
= (34.62 – 35)*4.55
= -1.725 ml
Total water required = 148 + (-1.725) = 146.28 ml
Step-3
Calculation for weight of cement
From ACI 211.4R Table 4.3.5(b)
Take W / C ratio = 0.29
Weight of cement = 146.28 / 0.29 = 504.21 kg/m3
Step-4
Calculation for weight of Fine Aggregate:
Cement = 504.21 / 3.15*1000= 0.1616
Water = 146.28 / 1*1000= 0.1462
CA = 1108.13 / 3*1000= 0.3690
Entrapped Air = 2 / 100= 0.020
Total = 0.7376m3
Volume of Fine Aggregate= 1-0.7376
Weight of Fine Aggregate= 0.2624*2.6*1000= 683.24 kg/m3
Step-5
Super plasticizer:
For 0.8% = (0.8 / 100)*583.53 = 4.668 ml
Step-6
Correction for water:
Weight of water (For 0.8%) =146.28 – 4.668 =141.61 kg/m3
Requirement of materials per Cubic meter
Cement = 504.21 Kg/m3
Fine Aggregate = 683.24 Kg/m3
Coarse Aggregate = 1108.13 Kg/m3
Water = 141.61 Kg/ m3
Super plasticizers = 4.6681 / m3
So the final ratio becomes
Cement : Fine agg (kg/m3) : Coarse agg (kg/m3) : Water (l/m3): Superplasticizer (l/m3)
1: 1.35 :2.19 :0.29 :0.8
This concrete mix design has been submitted to us by Natarajan. We are thankful to him for this valuable contribution.
September 16th, 2009 at 3:31 am
Friends, Mix Design is fine. I would like to share One information, if you want to reduce Cement content in M60 Just add 5% micro silica as
replacement of cement. You can easily get results with 420 kg of cement.
September 21st, 2009 at 9:05 am
Pl send mix design parameters, proportions required for M-55 grade concrete with Super plasticizer,Data available
are Cement qty -350 Kg to 480 Kg /cum.W/c ratio required 0.39 to 0.40. Slump reqd : 25 to 30mm & Sp gravity of CA1 is 2.65 (20mm down size) ,CA2 (10 mm down size ) is 2.65 & Sp gr of fine agg is 2.55 (Zone II).
Steam cured for 11 to 12 hours cycle.
September 26th, 2009 at 1:41 am
Please send me the information about preparation of M80 mix concrete and its strength after 7 and 28 days.
October 4th, 2009 at 3:57 am
Friends,
Mix Design is good. I would like to share One information, from durability condition cement content is high, we can reduce the cement content by 60 Kg & blendind the flyash by 100 Kg. Thereby reduce temperature of concrete by 2 degree centigrdaes.
October 5th, 2009 at 1:17 pm
pls send mix design proportions required for M60 grade concrete(for long span bridge beam). and use silica fume as addmixture.
October 16th, 2009 at 3:48 pm
useful information
how to assume air voids in FA for this mix water is 35% (any ref. plaease)
November 17th, 2009 at 10:25 am
Sir,
As per IS code what is maximum deviation for cube
strength? can you please explain?
December 26th, 2009 at 5:51 pm
Dear Sir,
Everybody suggested that for m-60 design the max size of coarse aggregate should be 12.5mm.
As part of my thesis,i need the M-60 mix design by using 20mm aggregates.
Can you please send me the M-60 mix design by using 20 mm downgraded aggregates.
S.G of C.A=2.79
S.G of F.A=2.703,zone-3
Admixture=Fosroc conplast sp 430
cement=ultratech-ppc
S.G of Cement=3.15
dry rodded bulk density of C.A=1650kg/m3
dry rodded bulk density of F.A=1620kg/m3
January 31st, 2010 at 5:31 am
Dear all,
I have seen the datas provided @ M60 mix design; it was very interesting and very useful. Kindly please provide the mix design for M80. This is my humble request and it will be useful to all of us
February 16th, 2010 at 1:18 pm
sir plz send me the mix design of M60 , As my specifi garvity of Couarse aggreate is 2.7 and of fine agg is 2.64. This is my humble request and it will be useful to all of us
February 16th, 2010 at 1:27 pm
As part of my thesis,i need the M-60 mix design by using 20mm aggregates.
Can you please send me the M-60 mix design by using 20 mm downgraded aggregates.
S.G of C.A=2.7
S.G of F.A=2.64,zone-2
Admixture=Fosroc conplast sp 430
cement=ultratech-opc 53
S.G of Cement=3.1
it should be of indian standard plz it is my humble request sir………..
February 26th, 2010 at 3:58 am
pl give M-25 mix design with minimum cement content 425 kg/Cum