M20 CONCRETE MIX DESIGN

As per IS 102622009 & MORT&H

A1

Stipulations for Proportioning 
1

Grade Designation 
M20 
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) 
250 kg/m^{3 } 
5

Maximum Water Cement Ratio (MORT&H 17003 A) 
0.5 
6

Workability (MORT&H 17004) 
25 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 
Not Used 
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) 
30N/mm^{2} 
2

Characteristic Strength @ 28 days 
20N/mm^{2} 
A4

Selection of Water Cement Ratio 
1

Maximum Water Cement Ratio (MORT&H 17003 A) 
0.5 
2

Adopted Water Cement Ratio 
0.5 
A5

Selection of Water Content 
1

Maximum Water content (10262table2) 
186 Lit. 
2

Estimated Water content for 25 mm Slump 
145 Lit. 
3

Superplasticiser used 
nil 
A6

Calculation of Cement Content 
1

Water Cement Ratio 
0.5 
2

Cement Content (145/0.5) 
290 kg/m^{3 } 


Which is greater then 250 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 
65.00% 

Adopted Vol. of Fine Aggregate ( 10.65) 
35.00% 
A8

Mix Calculations 
1

Volume of Concrete in m^{3} 
1.00 
2

Volume of Cement in m^{3} 
0.09 

(Mass of Cement) / (Sp. Gravity of Cement)x1000 

3

Volume of Water in m^{3} 
0.145 

(Mass of Water) / (Sp. Gravity of Water)x1000 

4

Volume of Admixture @ 0% in m^{3} 
nil 

(Mass of Admixture)/(Sp. Gravity of Admixture)x1000 

5

Volume of All in Aggregate in m^{3} 
0.763 

Sr. no. 1 – (Sr. no. 2+3+4) 

6

Volume of Coarse Aggregate in m^{3} 
0.496 

Sr. no. 5 x 0.65 

7

Volume of Fine Aggregate in m^{3} 
0.267 

Sr. no. 5 x 0.35 

A9

Mix Proportions for One Cum of Concrete (SSD Condition) 
1

Mass of Cement in kg/m^{3} 
290 
2

Mass of Water in kg/m^{3} 
145 
3

Mass of Fine Aggregate in kg/m^{3} 
696 
4

Mass of Coarse Aggregate in kg/m^{3} 
1429 

Mass of 20 mm in kg/m^{3} 
1029 

Mass of 10 mm in kg/m^{3} 
400 
5

Mass of Admixture in kg/m^{3} 
nil 
6

Water Cement Ratio 
0.5 