M-20 Mix Designs as per IS-10262-2009

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Dear All
Again I am back with M-20 Mix Designs as per IS-10262-2009
Regards
Raj Mohammad Khan

M-20 CONCRETE MIX DESIGN

As per IS 10262-2009 & MORT&H

A-1

Stipulations for Proportioning

1

Grade Designation M20

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) 30N/mm2

2

Characteristic Strength @ 28 days 20N/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 145 Lit.

3

Superplasticiser used nil

A-6

Calculation of Cement Content

1

Water Cement Ratio 0.5

2

Cement Content (145/0.5) 290 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 0.145

(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 0.763

Sr. no. 1 – (Sr. no. 2+3+4)

6

Volume of Coarse Aggregate in m3 0.496

Sr. no. 5 x 0.65

7

Volume of Fine Aggregate in m3 0.267

Sr. no. 5 x 0.35

A-9

Mix Proportions for One Cum of Concrete (SSD Condition)

1

Mass of Cement in kg/m3 290

2

Mass of Water in kg/m3 145

3

Mass of Fine Aggregate in kg/m3 696

4

Mass of Coarse Aggregate in kg/m3 1429

Mass of 20 mm in kg/m3 1029

Mass of 10 mm in kg/m3 400

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.

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Comments
  • Amarendra Nayak December 30, 2012 at 5:40 am

    I would like to know about concrete mix design & his mix propotion.

    1-How many types of grade concrete
    2-Propotion of grade concrete
    3-qty of cement,fine aggregate,coarse aggrete & water.
    4-qty of cement,fine aggregate,coarse aggrete & water per m3
    5-water cement ratio of material

  • Amarendra Nayak December 30, 2012 at 5:50 am

    Dear Sir,Please Send me formula for concrete mix design & qyt of rmc & steel in a slab/beam/colum.

  • shailesh shastri February 13, 2013 at 5:51 am

    density of different material of building use

  • Mohammed Siddique February 19, 2013 at 6:02 am

    Dear sir.. pls send me the cement adequacy systems of cement calculations and also mix design proportions…

  • madan lal saini February 22, 2013 at 8:01 am

    please send me quantity of aggerigate in per qubic meter concrerte or one bag cement for M20 concrete

  • MATLOOB ANSARI May 30, 2013 at 1:38 am

    dear sir please send me M20 concrete Qty eg: cement ,sand ,aggrerte and water in per cu.m

  • N. Aravind July 1, 2013 at 3:46 am

    Dear Sir, Which grade of aggregate is good for concrete works? Well graded or Uniform graded

  • Odaudu Michael IDris October 3, 2013 at 12:25 pm

    what1-How many types of grade concrete
    2-Propotion of grade concrete
    3-qty of cement,fine aggregate,coarse aggrete & water.
    4-qty of cement,fine aggregate,coarse aggrete & water per m3
    5-water cement ratio of material

  • khagendra Nath November 7, 2013 at 6:53 am

    sir please send me detail of design mix proportions of any grade concreate.what happens when proportion is not maintained?

  • Post a comment

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