M25 Mix Designs as per IS102622009
Posted in Mix Design  Email This Post Dear All
Again I am back with M25 Mix Designs as per IS102622009.
Regards
Raj Mohammad Khan
M25 CONCRETE MIX DESIGN 

As per IS 102622009 & MORT&H 

A1 
Stipulations for Proportioning  
1 
Grade Designation  M25 
2 
Type of Cement  OPC 53 grade confirming to IS122691987 
3 
Maximum Nominal Aggregate Size  20 mm 
4 
Minimum Cement Content (MORT&H 17003 A)  310 kg/m^{3 } 
5 
Maximum Water Cement Ratio (MORT&H 17003 A)  0.45 
6 
Workability (MORT&H 17004)  5075 mm (Slump) 
7 
Exposure Condition  Normal 
8 
Degree of Supervision  Good 
9 
Type of Aggregate  Crushed Angular Aggregate 
10 
Maximum Cement Content (MORT&H Cl. 1703.2)  540 kg/m^{3 } 
11 
Chemical Admixture Type  Superplasticiser Confirming to IS9103 
A2 
Test Data for Materials  
1 
Cement Used  Coromandal King OPC 53 grade 
2 
Sp. Gravity of Cement  3.15 
3 
Sp. Gravity of Water  1.00 
4 
Chemical Admixture  BASF Chemicals Company 
5 
Sp. Gravity of 20 mm Aggregate  2.884 
6 
Sp. Gravity of 10 mm Aggregate  2.878 
7 
Sp. Gravity of Sand  2.605 
8 
Water Absorption of 20 mm Aggregate  0.97% 
9 
Water Absorption of 10 mm Aggregate  0.83% 
10 
Water Absorption of Sand  1.23% 
11 
Free (Surface) Moisture of 20 mm Aggregate  nil 
12 
Free (Surface) Moisture of 10 mm Aggregate  nil 
13 
Free (Surface) Moisture of Sand  nil 
14 
Sieve Analysis of Individual Coarse Aggregates  Separate Analysis Done 
15 
Sieve Analysis of Combined Coarse Aggregates  Separate Analysis Done 
15 
Sp. Gravity of Combined Coarse Aggregates  2.882 
16 
Sieve Analysis of Fine Aggregates  Separate Analysis Done 
A3 
Target Strength for Mix Proportioning  
1 
Target Mean Strength (MORT&H 17005)  36N/mm^{2} 
2 
Characteristic Strength @ 28 days  25N/mm^{2} 
A4 
Selection of Water Cement Ratio  
1 
Maximum Water Cement Ratio (MORT&H 17003 A)  0.45 
2 
Adopted Water Cement Ratio  0.43 
A5 
Selection of Water Content  
1 
Maximum Water content (10262table2)  186 Lit. 
2 
Estimated Water content for 5075 mm Slump  138 Lit. 
3 
Superplasticiser used  0.5 % by wt. of cement 
A6 
Calculation of Cement Content  
1 
Water Cement Ratio  0.43 
2 
Cement Content (138/0.43)  320 kg/m^{3 } 

Which is greater then 310 kg/m^{3}  
A7 
Proportion of Volume of Coarse Aggregate & Fine Aggregate Content  
1 
Vol. of C.A. as per table 3 of IS 10262  62.00% 
2 
Adopted Vol. of Coarse Aggregate  62.00% 

Adopted Vol. of Fine Aggregate ( 10.62)  38.00% 
A8 
Mix Calculations  
1 
Volume of Concrete in m^{3}  1.00 
2 
Volume of Cement in m^{3}  0.10 

(Mass of Cement) / (Sp. Gravity of Cement)x1000  
3 
Volume of Water in m^{3}  0.138 

(Mass of Water) / (Sp. Gravity of Water)x1000  
4 
Volume of Admixture @ 0.5% in m^{3}  0.00134 

(Mass of Admixture)/(Sp. Gravity of Admixture)x1000  
5 
Volume of All in Aggregate in m^{3}  0.759 

Sr. no. 1 – (Sr. no. 2+3+4)  
6 
Volume of Coarse Aggregate in m^{3}  0.471 

Sr. no. 5 x 0.62  
7 
Volume of Fine Aggregate in m^{3}  0.288 

Sr. no. 5 x 0.38  
A9 
Mix Proportions for One Cum of Concrete (SSD Condition)  
1 
Mass of Cement in kg/m^{3}  320 
2 
Mass of Water in kg/m^{3}  138 
3 
Mass of Fine Aggregate in kg/m^{3}  751 
4 
Mass of Coarse Aggregate in kg/m^{3}  1356 

Mass of 20 mm in kg/m^{3}  977 

Mass of 10 mm in kg/m^{3}  380 
5 
Mass of Admixture in kg/m^{3}  1.60 
6 
Water Cement Ratio  0.43 
We are thankful to Er. Raj M. Khan for sharing this information with us on engineeringcivil.com. We hope this would be of great significance to civil engineers.
Sir why this mix design procedure differ from that of finding out the material quantity through ratio methid i.e. 1:1:2
If we check out the ratio here it will come about 1:2.34:4.2
how to calculate ratio actual