By
Raj Mohammad Khan
Following table shows the M-20 Mix Designs as per IS-10262-2009, hope this helps all civil engineers here
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M-20 CONCRETE MIX DESIGN |
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As per IS 10262-2009 & MORT&H |
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A-1 |
Stipulations for Proportioning | |
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1 |
Grade Designation | M20 |
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2 |
Type of Cement | OPC 53 grade confirming to IS-12269-1987 |
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3 |
Maximum Nominal Aggregate Size | 20 mm |
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4 |
Minimum Cement Content (MORT&H 1700-3 A) | 250 kg/m3 |
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5 |
Maximum Water Cement Ratio (MORT&H 1700-3 A) | 0.5 |
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6 |
Workability (MORT&H 1700-4) | 25 mm (Slump) |
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7 |
Exposure Condition | Normal |
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8 |
Degree of Supervision | Good |
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9 |
Type of Aggregate | Crushed Angular Aggregate |
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10 |
Maximum Cement Content (MORT&H Cl. 1703.2) | 540 kg/m3 |
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11 |
Chemical Admixture Type | Superplasticiser Confirming to IS-9103 |
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A-2 |
Test Data for Materials | |
|
1 |
Cement Used | Coromandal King OPC 53 grade |
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2 |
Sp. Gravity of Cement | 3.15 |
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3 |
Sp. Gravity of Water | 1.00 |
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4 |
Chemical Admixture | Not Used |
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5 |
Sp. Gravity of 20 mm Aggregate | 2.884 |
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6 |
Sp. Gravity of 10 mm Aggregate | 2.878 |
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7 |
Sp. Gravity of Sand | 2.605 |
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8 |
Water Absorption of 20 mm Aggregate | 0.97% |
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9 |
Water Absorption of 10 mm Aggregate | 0.83% |
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10 |
Water Absorption of Sand | 1.23% |
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11 |
Free (Surface) Moisture of 20 mm Aggregate | nil |
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12 |
Free (Surface) Moisture of 10 mm Aggregate | nil |
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13 |
Free (Surface) Moisture of Sand | nil |
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14 |
Sieve Analysis of Individual Coarse Aggregates | Separate Analysis Done |
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15 |
Sieve Analysis of Combined Coarse Aggregates | Separate Analysis Done |
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15 |
Sp. Gravity of Combined Coarse Aggregates | 2.882 |
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16 |
Sieve Analysis of Fine Aggregates | Separate Analysis Done |
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A-3 |
Target Strength for Mix Proportioning | |
|
1 |
Target Mean Strength (MORT&H 1700-5) | 30N/mm2 |
|
2 |
Characteristic Strength @ 28 days | 20N/mm2 |
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A-4 |
Selection of Water Cement Ratio | |
|
1 |
Maximum Water Cement Ratio (MORT&H 1700-3 A) | 0.5 |
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2 |
Adopted Water Cement Ratio | 0.5 |
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A-5 |
Selection of Water Content | |
|
1 |
Maximum Water content (10262-table-2) | 186 Lit. |
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2 |
Estimated Water content for 25 mm Slump | 145 Lit. |
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3 |
Superplasticiser used | nil |
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A-6 |
Calculation of Cement Content | |
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1 |
Water Cement Ratio | 0.5 |
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2 |
Cement Content (145/0.5) | 290 kg/m3 |
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Which is greater then 250 kg/m3 | |
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A-7 |
Proportion of Volume of Coarse Aggregate & Fine Aggregate Content | |
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1 |
Vol. of C.A. as per table 3 of IS 10262 | 62.00% |
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2 |
Adopted Vol. of Coarse Aggregate | 65.00% |
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Adopted Vol. of Fine Aggregate ( 1-0.65) | 35.00% |
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A-8 |
Mix Calculations | |
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1 |
Volume of Concrete in m3 | 1.00 |
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2 |
Volume of Cement in m3 | 0.09 |
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(Mass of Cement) / (Sp. Gravity of Cement)x1000 | |
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3 |
Volume of Water in m3 | 0.145 |
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(Mass of Water) / (Sp. Gravity of Water)x1000 | |
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4 |
Volume of Admixture @ 0% in m3 | nil |
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(Mass of Admixture)/(Sp. Gravity of Admixture)x1000 | |
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5 |
Volume of All in Aggregate in m3 | 0.763 |
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Sr. no. 1 – (Sr. no. 2+3+4) | |
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6 |
Volume of Coarse Aggregate in m3 | 0.496 |
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Sr. no. 5 x 0.65 | |
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7 |
Volume of Fine Aggregate in m3 | 0.267 |
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Sr. no. 5 x 0.35 | |
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A-9 |
Mix Proportions for One Cum of Concrete (SSD Condition) | |
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1 |
Mass of Cement in kg/m3 | 290 |
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2 |
Mass of Water in kg/m3 | 145 |
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3 |
Mass of Fine Aggregate in kg/m3 | 696 |
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4 |
Mass of Coarse Aggregate in kg/m3 | 1429 |
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Mass of 20 mm in kg/m3 | 1029 |
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Mass of 10 mm in kg/m3 | 400 |
|
5 |
Mass of Admixture in kg/m3 | nil |
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6 |
Water Cement Ratio | 0.5 |
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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.
If you have a query, you can ask a question here.
I want quantity of cement , Aggregate, Sand and water for
Deffirent type of mix grade and also ratio
M5
M7.5
M10
M15
M20
M25
M30
M35
M40
Please send the details in my e-mail id
i need mix ratio for interlock or paver block M7.5 to M30
how to calculate the interlock block weight
i want the details about all grade of concrete means reqirement of cement,sand,aggregate,water per cum. send answer to mail id
thank you
I want to know what is the initial stage & Elastic stage of concrete
give me idea of m15 crushing mechine useing in civil feild
Pl give the mix design of M20 required for structural PQC
sir is that better to do project combining both fly ash and super plasticizers together or seperatly to determine strength of concrete by varying percentage..
In columns, it is cutomed to bind the bars by overlape i.e. 1.2 meter for 20mm steel bar, which causes an extra cost approx 20% in structure cost. Can we suggest, welding overlape bars instead of binding.If welding is possible what should be the ration of overlap. Please give your comments.
respected sir,
i had gone through your m-20 mix design as per IS-10262. i like d design procedure of mix design.
And with ur kind regards i want this literature for my project work which i m conducting in my m.tech.(structural engg.). Though i had completed some sort of project but this literature definately be very helpful to emphasis various aspects of mix design.
I will be very thankful to u for your great help.
yours truely
om v. vaidya
title of project:- comparison between conventional concrete and different types of fibre reinforced concrete.
i am using the water cement ratio of 0.4 in m20 grade of concrete.
Is this water cement ratio can be used in m20 grade..?
lesser the water cement ration minimises 10% of Strength whereas more than 0.5 ratio affects the strength more than 20 %
Sathish L – Practicing Architect, Professor in School of Architecture, Chennai
i want the details about all grade of concrete means reqirement of cement,sand,aggregate,water per cum. send answer to mail id
i want the mix design for fibre reinforced self compacting concrete
i want to know about the design mix calculations by volumetric calculations with clear equations or constants
Dear Sir,i want information @ reinforcent design at the time of design of slab and how to calculate the mix design for suppose M-20 in detail steps
i want the details about all grade of concrete means reqirement of cement,sand,aggregate,water per cum. send answer to mail id
Pls tell me standard indian ratio of concrete mixture for slab in metre cube size
pl give me the working mix of cement:aggregate:sand for M15,M20,M25,M30,M35,m40 & M50 grade mix. Send the details to mail id.Thank you
Thanks a lot for you support…..
I want quantity of cement , Aggregate, Sand and water for
Deffirent type of mix grade and also ratio
M5
M7.5
M10
M15
M20
M25
M30
M35
M40
Please send the details in my e-mail id