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.
If you have a query, you can ask a question here.
As per IS:456-2000, OPCement shall not be more than 450 kg/m3.
Normally mixes of M-60 are designed with less than 450 kg/m3 of OPCement.
Please see this Cement And Water Saving With Water Reducers
Which is the maximum grade of concrete ??
Do we have mix design for SCC as per Indian standards
May I please have a concrete mix design of strength 60 Mos using cement of 42,5N using the C&CI method, it is for a project, please help.
Sir
Please give the mix design for M60 using IS Code
do u having the mix design for those u asked above grade
sir ;
maximum cement for design mix 450 kg/m3, then how you take above 500 kg??
Dear Sir,
Thanks for your efforts in concrete mix design. But I think using more than 500 Kg/m3 of Cement will give us a lot of problems starting from thermal stress which will cause a lot of problems in concrete….
We need exact calculation and Apx cost for RCC M- 60 / 23° C temperature….pl help
Do you having mix design For M60 grade concrete by using fly ash and silica fume.
plz mail excel or pdf if you have any one who would like to help me i need this for my project
R/Sir, send me 60 mpa, 50 mpa concrete Charictestic detail such as quantity of cement ,sand, water, water cement ratio, temprature. chemical add