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M-25 Mix Designs as per IS-10262-2009

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Dear All

Again I am back with M-25 Mix Designs as per IS-10262-2009.

Regards
Raj Mohammad Khan

M-25 CONCRETE MIX DESIGN

As per IS 10262-2009 & MORT&H

A-1

Stipulations for Proportioning

1

Grade Designation M25

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) 310 kg/m3

5

Maximum Water Cement Ratio (MORT&H 1700-3 A) 0.45

6

Workability (MORT&H 1700-4) 50-75 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 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

A-3

Target Strength for Mix Proportioning

1

Target Mean Strength (MORT&H 1700-5) 36N/mm2

2

Characteristic Strength @ 28 days 25N/mm2

A-4

Selection of Water Cement Ratio

1

Maximum Water Cement Ratio (MORT&H 1700-3 A) 0.45

2

Adopted Water Cement Ratio 0.43

A-5

Selection of Water Content

1

Maximum Water content (10262-table-2) 186 Lit.

2

Estimated Water content for 50-75 mm Slump 138 Lit.

3

Superplasticiser used 0.5 % by wt. of cement

A-6

Calculation of Cement Content

1

Water Cement Ratio 0.43

2

Cement Content (138/0.43) 320 kg/m3

Which is greater then 310 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 62.00%

Adopted Vol. of Fine Aggregate ( 1-0.62) 38.00%

A-8

Mix Calculations

1

Volume of Concrete in m3 1.00

2

Volume of Cement in m3 0.10

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

3

Volume of Water in m3 0.138

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

4

Volume of Admixture @ 0.5% in m3 0.00134

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

5

Volume of All in Aggregate in m3 0.759

Sr. no. 1 – (Sr. no. 2+3+4)

6

Volume of Coarse Aggregate in m3 0.471

Sr. no. 5 x 0.62

7

Volume of Fine Aggregate in m3 0.288

Sr. no. 5 x 0.38

A-9

Mix Proportions for One Cum of Concrete (SSD Condition)

1

Mass of Cement in kg/m3 320

2

Mass of Water in kg/m3 138

3

Mass of Fine Aggregate in kg/m3 751

4

Mass of Coarse Aggregate in kg/m3 1356

Mass of 20 mm in kg/m3 977

Mass of 10 mm in kg/m3 380

5

Mass of Admixture in kg/m3 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.

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Comments
  • Dharm Pal Raseela March 23, 2014 at 10:41 am

    Sir, if OPC cement is not available than can we use any PPC cement for mix design M-25 for testing

    • Dr K.Srinivasa Varma November 17, 2014 at 5:08 am

      You have to redesign your concrete mix.Specific gravity of PPC cement,strength,workability,setting time will vary.

  • Deepti Singh December 27, 2015 at 3:57 am

    Sir why this mix design procedure differ from that of finding out the material quantity through ratio methid i.e. 1:1:2

  • Deepti Singh December 27, 2015 at 3:58 am

    If we check out the ratio here it will come about 1:2.34:4.2

  • raj June 28, 2016 at 2:58 am

    how to calculate ratio actual

  • ramraj thakur September 26, 2016 at 1:07 pm

    please explain method for determination of mix proportion by 1 cum quantity.
    as 1:1:2.

  • pavan December 13, 2016 at 10:18 am

    Sir how is estimated water content been calculated

  • thanvi k j December 31, 2016 at 5:51 am

    please issue if possible contact no of approved concrete testing lab in jodhpur (Rajashthan area or near by area

  • Anita Cyriac January 15, 2017 at 2:44 am

    Dear sir
    Can you please send me concrete mix design of m20 if I am adding 30% and 50% of an admixture.

  • Meena February 17, 2017 at 9:10 am

    How can we determine water content for 65mm slump

  • rggohil associates March 28, 2017 at 6:54 am

    dear we wont m-25 / m20 design mix for projects volume syt. plz. send

    thanks

  • Post a comment

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