CMD-1.xls

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Grade of Concrete:M 35 Data unit Remarks

1REQUIREMENTS/PARAMETERS1.A) SPECIF IED MI NIMUM STRENGTH(Fck) 350 kg/cm

2

1.B) DURABIL ITY REQUIREMENTS

a) Exposure Severe (partly moderate however severe

b) Maximum w/c ratio 0.45 condition is considered for fdn.)

c) Minimum cement content 350 kg

d) Grade of cement 53 G

1.C)CEMENT (TYPE /GRADE)

a) Average strength 56.5 N/mm2

Above 53G for a fresh lot.

b)Standard Deviation

c)Characteristic Strength 53N/mm

2

d)Cement Grade 53 G E-curve preferred.

1.D)WORKABIL ITY OR SLUM P 100 mm High. Range-(80-120)mm

1.E)DETAI LS OF F INE AGGREGATE

a) Type (Natural/Mixed) Natural River Sand

b) % passing 600 micron sieve 85 % Average of two sample-92%

( pure sand) 98.5 % (fine to very fine sample taken)

c) Zone IV

d) %retained on 4.75mm IS Sieve nil

e) Specific Gravity 2.58

f) Dry Loose Bulk Density1.47 kg/lit.

g) Bulkage 15 %

h) Surface Moisture 2 % Early morning-4%, noon-(1.5-2)%

1.F)DETAI LS OF COARSE AGGREGATE

a) Type rounded River Chips

b) % Passing 20mm Sieve 95 %

c) Maximum size of aggregate(MSA) 20 mm

d) %Passing On 4.75mm Sieve 1 %


d) Dry Loose Bulk Density(DLBD) 1.67 kg/lit.

2TARGET MEAN STRENGTH

a) Degree Of Quality Control Good between good to very good

b) Standard Deviation S 5.8

c) Statistical constant selected 't' 1.28

d) Target Mean Strength 'fm' 424 kg/cm2

fm=(fck + S x t).

3 WATER TO CEMENT RATIO lower value is preferred, however

a) W/C Ratio 0.41 higher one is selected as practically

b) W/C Ratio ( For Durability) 0.45 it becomes hard to achieve high

c) W/C Ratio (Selected) 0.45 slmp with w/c< 0.45 with no admix.

DOE (UK), IS, RRL (UK) -Method Combined

Date:

Name of the project:

Member:

WORKSHEET FOR CONCRETE MIXES DESIGN

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Contd..Pg-2

4PROPORTION OF FI NE AGGREGATE

a) Maximum Size of Aggregate(MSA) 20 mm

b) Slump 100 mm

c) Free W/C Ratio 0.45

d) %Passing on 600 Mic. Sieve 92 %

e) Proportion of Fine Aggregate0.28

5PROPORTION OF COARSE AGGREGATE

a) PROPORTION OF COARSE AGGREGATE 0.72 (1-0.28)

6CORRECTIONS IN AGG. PROPORTION

6.A)Corrections due to coarse aggregates in fine

aggregate :

a) % Passing 4.75mm Sieve nil

b) % Proportion of Fine Aggregate28

after correction

c) % Proportion of Coarse aggregate72

after correction.

6.B)Corrections due to fine aggregates in coarse

aggregates:

a) % passing 4.75mm sieve 1 1% oversize as fine

b) % proportion of fine aggregate 27.28 correction= 28-(1% x 72)=27.28

after correction approx.-27%

c) % proportion of coarse aggregates 72.72 approx.-73% after corrections

7AGGREGATE TO CEMENT RATIO (A/C):

a) Maximum size of aggregate(MSA) 20 mm

b) Shape of Agg. -- Fine Agg. (FA) Irregular

c) -- Coarse Agg. (CA)

d) W/C ratio selected 0.45

e) Workability/Slump 100 mm Avg.

f) Grading curve no/Zone IV

g) A/C RATIO

1) for fine aggregate 3.52) for coarse aggregate 3.8 (Average of Irrg. & rounded vales)

h) AGGREGATE PROPORTION

1) for fine aggregate 0.27

2) for coarse aggregate 0.73

j) A/C PROPORTIONATELY WORK OUT



k) A/C CORRECTED FOR SP.GRAVITY

Rounded & irregualr mixed

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T=1) + 2) 3.790

l) A/C CORRECTED FOR FLAKINESS 3.487

m)A/C FINAL 3.487 say 3.50 contdto Pg-3

8WEIGH BATCHING:

a) CEMENT(50 KG) 50 kgb) WATER(50KG X W/C) 22.5 lit

c) FA= 50KG X A/C (FINAL) X % Prop. 47.25 kg

d) CA= 50KG X A/C (FINAL) X % Prop. 127.75 kg

9BATCHI NG after adjustments:

a) CEMENT(50 KG) 50 Kg 01 bag

b) WATER(50KG X W/C) 22.5 lit

c) WATER AFTER CORRECTION 22.8 lit

d) FINE AGGREGATE after adjustment 48.195 kg adjusted for 2% moisture

e) COARSE AGGREGATE-CA 127.75 kg

Trial mix Actual adjusted Final proportion

Water 22.8 22.8

Cement 50 50 1

Sand(FA) 48.195 49 0.98

Chips(CA) 127.75 127 2.54

Total Aggregate 248.745 248.80

Concrete density

Cement Content

Remarks:

Test Conducting Off icer

Remarks of the approval author i ty:

adjusted for 1% absorption & 2%

moisture

MixNo.

Date ofcasting

Date oftesting

Cement(Kg)

Sand(Kg)

water (lit)Chips(Kg)

Avg. 06nos Cubewt. (Kg.)

Slump(mm)

Visualmixobservation.

7 daysComp.Strength.N/mm2

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Signature of the Off icer

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1REQUIREMENTS/PARAMETERS1.A) SPECIF IED MI NIMUM STRENGTH(Fck) 200 kg/cm

2


a) Exposure Moderate (partly moderate however severe

b) Maximum w/c ratio 0.5 condition is considered for fdn.)







c)Characteristic Strength 53N/mm

2


1.D)WORKABIL ITY OR SLUM P 60 mm Medium.Range-(50-70)mm

1.E)DETAI LS OF F INE AGGREGATE

a) Type (Natural/Mixed) Natural River Sand



c) Zone IV



f) Dry Loose Bulk Density 1.47 kg/lit.

g) Bulkage 15 %

h) Surface Moisture 2 % Early morning-4%, noon-(1.5-2)%










b) Standard Deviation S 4.6


d) Target Mean Strength 'fm' 275.9 kg/cm2

fm=(fck + S x t).

3 WATER TO CEMENT RATIO

a) W/C Ratio 0.51

b) W/C Ratio ( For Durability) 0.5

c) W/C Ratio (Selected) 0.5

WORKSHEET FOR CONCRETE MIXES DESIGN

DOE (UK), IS, RRL (UK) -Method Combined

Date:


Member:

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Contd..Pg-2



b) Slump 60 mm Avg.



e) Proportion of Fine Aggregate0.26




6.A)Corrections due to coarse aggregates in fine

aggregate :

a) % Passing 4.75mm Sieve nil

b) % Proportion of Fine Aggregate26

after correction


after correction.


aggregates:

a) % passing 4.75mm sieve 1 1% oversize as fine

b) % proportion of fine aggregate 25.28 correction= 26-(1% x 72)=25.28

after correction

c) % proportion of coarse aggregates 74.72 after corrections



b) Shape of Agg. -- Fine Agg. (FA) Irregular

c) -- Coarse Agg. (CA)




g) A/C RATIO

1) for fine aggregate 4.52) for coarse aggregate 5 (Average of Irrg. & rounded vales)


1) for fine aggregate 25.28 %

2) for coarse aggregate 74.72 %

j) A/C PROPORTIONATELY WORK OUT





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T=1) + 2) 4.971


m)A/C FINAL 4.573 contdto Pg-3

8WEIGH BATCHING:

a) CEMENT(50 KG) 50 kgb) WATER(50KG X W/C) 25 lit


d) CA= 50KG X A/C (FINAL) X % Prop. 170.85 kg

9BATCHI NG after adjustments:


b) WATER(50KG X W/C) 25 lit





Water 25.5 25.5

Cement 50 50 1

Sand(FA) 58.956 60 1.2

Chips(CA) 170.85 170 3.4


Concrete density

Cement Content

Remarks:




moisture

MixNo.

Date ofcasting

Date oftesting

Cement(Kg)

Sand(Kg)



Slump(mm)

Visualmixobservation.

7 daysComp.Strength.N/mm2

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AGGREGATE FIELD TEST OBSERVATION SHEET DATE:

1) PROJECT :

2) TYPE :

3) PHYSICAL INSPECTION :

4) DRY LOOSE BULK DENSITY :

5) SOURCE :

6) SAMPLE WEIGHT :

WT(gms) % WT.(gms) %

40 MM

20

10

4.75

2.36

1.18

0.6

0.3

0.15

PAN

TOTAL

7) SPECIFIC GRAVITY :

8) SILT CONTENT :

9) BULKAGE :

10) SURFACE MOISTURE :

11) DATE OF TESTING :

12) TESTED BY :

13) REMARKS :

RETAINEDREMARKS

SIEVE

SIZE (IS

SIEVE)

CUMULATIVE

PERCENTAGE

RETAINED

PASSING THROUGH

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1REQUIREMENTS/PARAMETERS

1.A) SPECIF IED MI NIMUM STRENGTH(Fck) 300 kg/cm2


a) Exposure Moderate (partly moderate however severeb) Maximum w/c ratio 0.5 condition is considered for fdn.)







c)Characteristic Strength 53N/mm2


1.D)WORKABIL ITY OR SLUM P 65 mm Medium.Range-(60-70)mm

1.E)DETAI LS OF F INE AGGREGATEa) Type (Natural/Mixed) Natural River Sand



c) Zone IV



f) Dry Loose Bulk Density 1.47 kg/lit.

g) Bulkage 15 %

h) Surface Moisture 2 %










b) Standard Deviation S 6


d) Target Mean Strength 'fm' 400 kg/cm2

fm=(fck + S x t).

3 WATER TO CEMENT RATIO

a) W/C Ratio 0.43

b) W/C Ratio ( For Durability) 0.5

c) W/C Ratio (Selected) 0.43



b) Slump 65 mm Avg.


Member:

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e) Proportion of Fine Aggregate 0.276 say 0.28




6.A)Corrections due to coarse aggregates in fineaggregate :

a) % Passing 4.75mm Sievenil

b) % Proportion of Fine Aggregate 28

after correction


after correction.


aggregates:

a) % passing 4.75mm sieve1 1% oversize as fine

b) % proportion of fine aggregate27 correction= 28-(1% x 72)=27.28

after correction

c) % proportion of coarse aggregates73

after corrections



b) Shape of Agg. -- Fine Agg. (FA) Irregularc) -- Coarse Agg. (CA)




g) A/C RATIO


2) for coarse aggregate 3.91 (Average of Irrg. & rounded vales)


1) for fine aggregate 27 %

2) for coarse aggregate 73 %j) A/C PROPORTIONATELY WORK OUT






T=1) + 2) 3.903


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m)A/C FINAL 3.6

8WEIGH BATCHING:

a) CEMENT(50 KG) 50 kg



d) CA= 50KG X A/C (FINAL) X % Prop. 131.4 kg9BATCHI NG after adjustments:







Water 21.8 21.8

Cement 50 50 1Sand(FA) 49.572 50 1

Chips(CA) 131.4 131 2.62


Concrete density

Cement Content

Remarks:





moisture

MixNo.

Date ofcasting

Date oftesting

Cement(Kg)

Sand(Kg)



Slump(mm)

Visualmixobservati

on.

7 daysComp.Strength.

N/mm2

CMD-1.xls

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