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CEMENT CONTENT = 310 kgs / m3

FREE WATER = 140 kgs / m3

FREE W/C RATIO = 0.45

DETERMINATION OF CA & FA CONTENT

310 1 fa 1

FA - 1000 = 140.00 + + X = 744 Kgs

3.15 0.38 2.57 1000

310 1 Ca 1

CA - 1000 = 140.00 + + X = 1247 Kgs

3.15 0.62 2.64 1000

TOTAL DRY CA & FA = 1990 kgs

CEMENT = 310 kgs

CA 20 mm ( SSD ) = 623 kgs

CA 10 mm ( SSD ) = 623 kgs

RIVER SAND ( SSD ) = 521 kgs

CRUSHER SAND ( SSD ) = 223 kgs

WATER = 140 kgs

DENSITY = 2440 kgs

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CONCRETE INDIA

GRADE OF CONCRETE M20

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PROJECT : M/s Navayuga Engineering Company Ltd

LOCATION : Bengaluru DATE : 28-01-2016

GRADE OF CONCRETE : M20

TARGET MEAN STRENGTH : 26.60 N/mm2

MAXIMUM SIZE OF AGGREGATE, mm . : 20

SLUMP OF CONCRETE, mm ( AT SITE ) : 120. +/- 20 mm

BASIC DATA

BRAND OF CEMENT : BHARATHI/ULTRA TECH

TYPE OF CEMENT : OPC (53 GRADE)

SPECIFIC GRAVITY OF CEMENT : 3.15

SOURCE OF FINE AGGREGATE ( MANUFACTURED SAND ) :

SOURCE OF FINE AGGREGATE ( CRUSHER SAND ) :

AVE. SPECIFIC GRAVITY OF FINE AGGREGATE : 2.57

WATER ABSORPTION OF FINE AGG ( MANUFACTURED SAND ) % : 2.5

WATER ABSORPTION OF FINE AGG ( CRUSHER SAND ) % : 3.5

FA IN TOTAL AGGREGATE ( MANUFACTURED SAND & CRUSHER SAND ) % : 38.00

SOURCE OF COARSE AGGREGATE :

TYPE OF COARSE AGGREGATE : CRUSHED ROCK

AVE. SPECIFIC GRAVITY OF COARSE AGGREGATE : 2.64

AVE. WATER ABSORPTION OF COARSE AGGREGATE % : 0.5

COARSE AGGREGATE IN TOTAL AGG (20mm & 10mm) % : 62.00

SUPPLIER NAME OF CHEMICAL ADMIXTURE : ECMAS

TYPE OF CHEMICAL ADMIXTURE : SUPERPLASTICIZER

PRODUCT NAME OF CHEMICAL ADMIXTURE : ECMAS HP 890

DOSAGE OF ADMIXTURE - (% BY Wt OF CEMENT) % : 0.55

RECOMMENDED REDOSAGE AT SITE MAX. (% BY Wt OF CEMENT) % : 0.2

CEMENT : 310 Kgs

CA 20 mm ( SSD ) : 623 Kgs

CA 10 mm ( SSD ) : 623 Kgs

M.SAND ( SSD ) : 521 Kgs

CRUSHER SAND ( SSD ) : 223 Kgs

WATER : 140 Kgs

ADMIXTURE : 1.705 Kgs

TOTAL DENSITY OF FRESH CONCRETE : 2442 Kgs

MIX PROPORTION BY WEIGHT

CEMENT F.A C.A

1 : 2.4 : 4.02

Note :-

1 FOR WEIGH BATCHING CORRECTION FOR MOISTURE IN AGGREGATES SHOULD BE DONE DAILY

HOSKOTE

MATERIAL REQUIRED PER CUM OF CONCRETE

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CONCRETE INDIA

CHIKKABALAPUR

CHIKKABALAPUR

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The Concrete mix design is a process of selecting suitable ingredient for concrete and determining

their proportions i.e. concrete having a certain minimum compressive strength , workability and

durability. The mix design has been carried out as per stipulation of Indian Standard IS : 10262 - 1982

( Reaff 1989 & 1999 ). Keeping in view the recommended standard deviation and target mean strength .

In this method of mix design,the water content and proportion of fine aggregate corresponding to a

maximum size of aggregate are first determined for referred values of workability water cement ratio

and grading of fine aggregate. The batch weight of materials per unit volume of concrete is finally ,

calculated by the absolute volume method. The mix proportion have suitably modified successively

based on trial mixes to arrive at an optimum mix proportion . It satisfies the requirement of desiredworkability and 28 days strength of concrete .

QUANTITY OF MATERIAL, M3 : 1.000

BY WEIGHT

CEMENT : 310 Kgs

CA 20 mm ( DRY ) : 620 Kgs

CA 10 mm ( DRY ) : 620 Kgs

M.SAND ( DRY ) : 515 Kgs

CRUSHER SAND ( DRY ) : 218 Kgs

WATER : 157 Kgs

ADMIXTURE : 1.705 Kgs

Note

1. For Weigh Batching correction for moisture in aggregate should be done daily.

2. Mix design calculation are based on IS : 10262 & IS : 456

3. Concrete Specimens cured in water & tested as per IS : 516

4. Compressive Strength conducted on standard specimen of 150mm cubes .

5. Proportions of Aggregate may vary, as per grading available at time of pour .

References

1. IS : 10262 - 1982 ( Reaffirmed 1989 - 1999 )

2. IS : 456 - 2000

3. SP : 23

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CONCRETE INDIA

Report on Concrete Mix Design ( M20 )

BATCH SHEET