CLIENT MUNICIPAL CORPORATION OF GREATER MUMBAI

M/s. API Civilcon Pvt. Ltd.

PROJECT Proposed Redevelopment of Topiwala Municipal Market on plot

Bearing CTS no. 746/13, 750(pt.), 751, 784, 785 & 787 of village
Pahadi, Goregaon(W) in P/South Ward.

CONCRETE MIX DESIGN REPORT AS PER IS 10262

1 ] STIPULATIONS FOR PROPORTIONING

a) Grade designation M 35
b) Type of cement OPC 53 grade conforming to IS 269 ( 2013 )
d) Maximum normal size of aggregate 20.0 mm
e) Minimum cement content 350 kg / m3 ( AS PER TENDER SPECIFICATION )
f) Maximum water-cement ratio 0.45 ( AS PER IS 456 , ( AS PER IS 456, TABLE No.5, PAGE NO.20 )
g) Workability 100 - 150 mm ( AS PER IS 456 , PAGE NO.17 )
h) Exposure condition Severe
j) Method of concrete placing Non Pumping/Pumping
k) Type of aggregate Crushed angular aggregate
m) Maximum cement ( OPC ) content 450 kg / m3
n) Chemical admixture type Superplasticizer
0 ) Degree of supervision Good

2 ] TEST DATA FOR MATERIALS

a) Cement used OPC 53 grade conforming to IS 12269- Ambuja cement

b) Specific gravity of cement 3.15
e) Chemical admixture Conforming to IS 9103- ASIAN PAINTS SMART CARE
Specific gravity of admixture 1.08
f) Specific gravity of :
i) Coarse aggregate : Metal - 1 2.78 ( PAYA QUARRY )
Metal - 2 2.81 ( PAYA QUARRY )
ii) Fine aggregate : Crushed sand 2.71 ( PAYA QUARRY )
g) Water absorption :
i) Coarse aggregate : Metal - 1 1.96%
Metal - 2 1.79%
ii) Fine aggregate : Crushed sand 3.87%
h) Free ( surface ) moisture :
i) Coarse aggregate : Metal - 1 NIL (MOISTURE WILL BE CHANGE ACCORDINGLY
Metal - 2 NIL AVAILABILITY OF AGGREGATE IN PLANT )
ii) Fine aggregate : Crushed sand NIL
i)Water used Potable water conforming to IS 456 - Well water ( local )
j) specific gravity of water 1.0

NIRBHAY DESHMUKH
MIX DESIGN - CONSULTANT
M.Tech ( Structural ) QC-MANAGER
j) Sieve analysis :
1) Coarse aggregate
Coarse Aggregate - 1 (10.0 mm ) Coarse Aggregate - 2 ( 20.0 mm )
IS SIEVE Weight CUMULATIVE % IS SIEVE Weight CUMULATIVE %
SIZE Retained % Retained Retained Passing SIZE Retained % Retained Retained Passing

25 mm 25 mm 100.00
20 mm 20 mm 340.00 11.33 11.33 88.67
10 mm 110.00 3.69 3.69 96.31 10 mm 2600.00 86.67 98.00 2.00
4.75 mm 2740.00 91.95 95.64 4.36 4.75 mm 50.00 1.67 99.67 0.33
2.36 mm 70.00 2.35 97.99 2.01 2.36 mm
1.18 mm 1.18 mm
PAN 60.00 2.01 100.00 0.00 PAN 10.00 0.33 100.00 0.00

TOTAL 2980.00 100.00 TOTAL 3000.00 100.00

2) Fine aggregate 3] Proportion of volume of coarse aggregate and fine aggregate content
Percentage of coarse aggregate and fine aggregate content is carried out
Crushed sand through combine gradation as per IS 383, table no.5, page no.11, base on
experience, percent of aggregate was decided.
COMBINE GRADATION

IS SIEVE Weight CUMULATIVE % IS SIEVE COMBINED LIMIT AS

SIZE Retained % Retained Retained Passing SIZE CA-I CA-II C.SAND % PER IS 383

10 mm 100.00 25mm 100.00 100.00 100.00 100.00

4.75 mm 108.50 6.10 6.10 93.90 20mm 100.00 88.67 100.00 96.37 95 to100
2.36 mm 284.00 15.97 22.08 77.92 12.5mm 100.00 2.00 100.00 68.64
1.18 mm 350.00 19.69 41.76 58.24 10mm 4.36 0.33 100.00 47.60
600 micron 263.00 14.79 56.55 43.45 4.75mm 2.01 0.00 93.90 43.64 30 to 50
300 micron 301.50 16.96 73.51 26.49 2.36mm 0.00 77.92 35.85
150 micron 265.00 14.90 88.41 11.59 1.18mm 58.24 26.79
PAN 206.00 11.59 100.00 0.00 600 micron 43.45 19.99 10 to 35
300 micron 26.49 12.19
TOTAL 1778.00 100.00 150 micron 11.59 5.33 0 to 6

F.M 2.88 Percentage 22.00 32.00 46.00 100.00

COMBINE GRADATION GRAPH

120

100
PERCENTAGE

80

60

40

20

0
150 micron 600 micron 4.75mm 20mm
IS SIEVE

COMBINE LOWER LIMIT UPPER LIMIT

NIRBHAY DESHMUKH
MIX DESIGN - CONSULTANT
M.Tech ( Structural ) QC-MANAGER
 4] TARGET STRENGHT FOR MIX PROPORTIONING

fck = fck + t x s ( s value is taken from IS 10262, table- 2 )

fck = 35 + 1.7 x 5 = 43.25 N / mm2

5] SELECTION OF WATER - CEMENT RATIO

Maximum water - cement ratio = 0.45 ( AS IS 456 , TABLE NO. 05, PAGE NO. 20 )

Based on experience , adopt water-cement ratio as 0.325

0.45 > 0.325 , hence O.K

6] SELECTION OF WATER CONTENT. :

From Table 2 , Maximum water content for 20 mm aggregate = 186 kgs ( for 25 to 50 mm slump range )
ine aggregate content
Estimated water content for 100-150 mm slump 125 mm Avg.
5, page no.11, base on = 186 + 12 / 100 x 186 = 208 kgs

As superplasticizer is used , the water content can be reduced up to 45 percent .

Based on trials with superplasticizer water content reduction of 32.69 % has been achieved .

Hence , the arrived water content = 208 x 0.6731 = 140 kgs

7] CALCULATION OF CEMENT CONTENT

Water - cement ratio. = 0.33

Cement content = 140 / 0.33 = 431.43 kgs say 430 kgs / m3

From IS 456 : 2009,Table 5, Page No.20, minimum cement content for severe exposure condition = 320 kg / m3 .

And minimum cement for M 35 grade = 340 kgs / m3

430 kg / m3 > 340 kg / m3 > 320 kgs / m3 , hence , O.K

NIRBHAY DESHMUKH
MIX DESIGN - CONSULTANT
M.Tech ( Structural ) QC-MANAGER
8] MIX CALCULATIONS
The mix calculations per unit volume of concrete shall be as follows :

a) Volume of concrete = 1.00 m3

b) Volume of entrapped air in wet concrete = 0.01 m3

c) Volume of cement = Mass of cement X 1

Specific gravity of cement 1000
= 430 / 3.15 X 1 = 0.1365 m3
1000
e) Volume of water = Mass of water X 1
Specific gravity of water 1000
= 140 / 1 X 1 = 0.140 m3
1000
f) Volume of chemical admixture 1.2% by = Mass of admixture X 1
mass of cement (= 430 x 1.2% 5.16 kgs ) Specific gravity of admixture 1000
= 5.16 / 1.08 X 1 = 0.0048 m3
1000
g) Volume of all in aggregate = [a - ( b + c + d + e + f ) ]
= 0.7085 m3
h) Mass of 10 mm aggregate = g x volume of CA- 10.0 mm x Specific gravity of CA- 10 mm
x 1000
= 0.7085 x 0.220 x 2.78 x 1000
= 433 kgs
i) Mass of 20.0 mm aggregate = g x volume of CA- 20.0 mm x Specific gravity of CA- 20.0 mm
x 1000
= 0.7085 x 0.32 x 2.81 x 1000
= 637 kgs
j) Mass of fine aggregate ( Crushed sand ) = f x volume of c.sand x Specific gravity of c.sand
x 1000
= 0.7085 x 0.46 x 2.71 x 1000
= 883 kgs
9] MIX PROPORTIONS FOR TRIAL :

CEMENT 10 mm 20 mm c.sand water w /c Admixture Density

430 433 637 883 140 0.33 5.16 2524

REMARKS :
The above recommendation are based on the use of saturated surface dry materials so that
due allowance must be made at site for the moisture content and absorption in the aggregates.
Admixture dosage can varies between 0.8 to 1.5 % accordingly atmospheric condition .

NIRBHAY DESHMUKH
MIX DESIGN - CONSULTANT
M.Tech ( Structural ) QC-MANAGER