M 15 Mix Designs as per IS-10262-2009

Mohammad Khan

M-15 CONCRETE MIX DESIGN

As per IS 10262-2009 & MORT&H

A-1
Stipulations for Proportioning
1
Grade Designation M15
2
Type of Cement OPC 53 grade confirming to IS-12269-1987
3
Maximum Nominal Aggregate Size 20 mm
4
Minimum Cement Content (MORT&H 1700-3 A) 250 kg/m3
5
Maximum Water Cement Ratio (MORT&H 1700-3 A) 0.5
6
Workability (MORT&H 1700-4) 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/m3
11
Chemical Admixture Type Superplasticiser Confirming to IS-9103
A-2
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
A-3
Target Strength for Mix Proportioning
1
Target Mean Strength (MORT&H 1700-5) 25N/mm2
2
Characteristic Strength @ 28 days 15N/mm2
A-4
Selection of Water Cement Ratio
1
Maximum Water Cement Ratio (MORT&H 1700-3 A) 0.5
2
Adopted Water Cement Ratio 0.5
A-5
Selection of Water Content
1
Maximum Water content (10262-table-2) 186 Lit.
2
Estimated Water content for 25 mm Slump 135 Lit.
3
Superplasticiser used nil
A-6
Calculation of Cement Content
1
Water Cement Ratio 0.5
2
Cement Content (135/0.5) 270 kg/m3

Which is greater then 250 kg/m3
A-7
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 ( 1-0.65) 35.00%
A-8
Mix Calculations
1
Volume of Concrete in m3 1.00
2
Volume of Cement in m3 0.09

(Mass of Cement) / (Sp. Gravity of Cement)x1000
3
Volume of Water in m3 0.135

(Mass of Water) / (Sp. Gravity of Water)x1000
4
Volume of Admixture @ 0% in m3 nil

(Mass of Admixture)/(Sp. Gravity of Admixture)x1000
5
Volume of All in Aggregate in m3 0.779

Sr. no. 1 – (Sr. no. 2+3+4)
6
Volume of Coarse Aggregate in m3 0.507

Sr. no. 5 x 0.65
7
Volume of Fine Aggregate in m3 0.273

Sr. no. 5 x 0.35
A-9
Mix Proportions for One Cum of Concrete (SSD Condition)
1
Mass of Cement in kg/m3 270
2
Mass of Water in kg/m3 135
3
Mass of Fine Aggregate in kg/m3 711
4
Mass of Coarse Aggregate in kg/m3 1460

Mass of 20 mm in kg/m3 1051

Mass of 10 mm in kg/m3 409
5
Mass of Admixture in kg/m3 nil
6
Water Cement Ratio 0.5



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.