MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Water = 1Specific Gravity of GGBS = 2.91Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.14

859.56

819.71

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with GGBS for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the GGBS content:Ratio of Weight of Water and GGBS = W/S= 0.3Ratio of Water and Cement = W/C= 0.25

0.0124

19.2719.27

5. Determine the mixing water content required for GGBS:

5.786. Determine the SP dosage:

10.687. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

7.48

141.81

MIX PROPORTION:CEMENT GGBS FA CA SP WATER/BINDER M.SILICA VMA

574.02 19.27 859.56 819.71 10.68 141.81 40.18 1.722PROPORTION 1 0.03 1.50 1.43 0.019 0.247 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of GGBS)) + ((1*Ratio of W/GGBS*Wpm)/(1000*SG of W))) =0.0006Wpm . From this Wpm in kg/m3 =Weight of GGBS in kg/m3= Wggbs=

Water content for GGBS in kg/m3 = Wwb =

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wggbs) in kg/m3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwb-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Water = 1Specific Gravity of GGBS = 2.91Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.13

852.02

812.52

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with GGBS for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the GGBS content:Ratio of Weight of Water and GGBS = W/S= 0.3Ratio of Water and Cement = W/C= 0.25

0.0180

28.0028.00

5. Determine the mixing water content required for GGBS:

8.406. Determine the SP dosage:

10.847. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

7.59

144.32

MIX PROPORTION:CEMENT GGBS FA CA SP WATER/BINDER M.SILICA VMA

574.02 28.00 852.02 812.52 10.84 144.32 40.18 1.722PROPORTION 1 0.05 1.48 1.42 0.019 0.251 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of GGBS)) + ((1*Ratio of W/GGBS*Wpm)/(1000*SG of W))) =0.0006Wpm . From this Wpm in kg/m3 =Weight of GGBS in kg/m3= Wggbs=

Water content for GGBS in kg/m3 = Wwb =

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wggbs) in kg/m3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwb-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Water = 1Specific Gravity of GGBS = 2.91Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.12

844.48

805.32

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with GGBS for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the GGBS content:Ratio of Weight of Water and GGBS = W/S= 0.3Ratio of Water and Cement = W/C= 0.25

0.0236

36.7336.73

5. Determine the mixing water content required for GGBS:

11.026. Determine the SP dosage:

10.997. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

7.70

146.83

MIX PROPORTION:CEMENT GGBS FA CA SP WATER/BINDER M.SILICA VMA

574.02 36.73 844.48 805.32 10.99 146.83 40.18 1.722PROPORTION 1 0.06 1.47 1.40 0.019 0.256 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of GGBS)) + ((1*Ratio of W/GGBS*Wpm)/(1000*SG of W))) =0.0006Wpm . From this Wpm in kg/m3 =Weight of GGBS in kg/m3= Wggbs=

Water content for GGBS in kg/m3 = Wwb =

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wggbs) in kg/m3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwb-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Water = 1Specific Gravity of GGBS = 2.91Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.11

836.94

798.13

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with GGBS for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the GGBS content:Ratio of Weight of Water and GGBS = W/S= 0.3Ratio of Water and Cement = W/C= 0.25

0.0293

45.4745.47

5. Determine the mixing water content required for GGBS:

13.646. Determine the SP dosage:

11.157. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

7.81

149.34

MIX PROPORTION:CEMENT GGBS FA CA SP WATER/BINDER M.SILICA VMA

574.02 45.47 836.94 798.13 11.15 149.34 40.18 1.722PROPORTION 1 0.08 1.46 1.39 0.019 0.260 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of GGBS)) + ((1*Ratio of W/GGBS*Wpm)/(1000*SG of W))) =0.0006Wpm . From this Wpm in kg/m3 =Weight of GGBS in kg/m3= Wggbs=

Water content for GGBS in kg/m3 = Wwb =

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wggbs) in kg/m3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwb-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Fly Ash = 2.19Specific Gravity of Water = 1Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.14

859.56

819.71

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with Fly Ash for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the Fly Ash content:Ratio of Weight of Water and Fly Ash = W/F= 0.4Ratio of Water and Cement = W/C= 0.25

0.012

14.5

14.55. Determine the mixing water content required for Fly Ash:

5.796. Determine the SP dosage:

10.597. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

6.36

142.94

MIX PROPORTION:CEMENT FLY ASH FA CA SP WATER/BINDER M.SILICA VMA

574.02 14.48 859.56 819.71 10.59 142.94 40.18 1.722PROPORTION 1 0.03 1.50 1.43 0.018 0.249 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of F)) + ((1*Ratio of W/F* Wpm)/(1000*SG of W))) =0.0008Wpm. From this Wpm in kg/m 3 =

Weight of Fly Ash in kg/m3= Wf =

Water content for Fly Ash in kg/m3 = Wwf=

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wf+Wggbs) in kg/m 3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwf-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Fly Ash = 2.19Specific Gravity of Water = 1Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.13

852.02

812.52

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with Fly Ash for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the Fly Ash content:Ratio of Weight of Water and Fly Ash = W/F= 0.4Ratio of Water and Cement = W/C= 0.25

0.018

21.0

21.05. Determine the mixing water content required for Fly Ash:

8.426. Determine the SP dosage:

10.717. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

6.43

145.49

MIX PROPORTION:CEMENT FLY ASH FA CA SP WATER/BINDER M.SILICA VMA

574.02 21.04 852.02 812.52 10.71 145.49 40.18 1.722PROPORTION 1 0.04 1.48 1.42 0.019 0.253 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of F)) + ((1*Ratio of W/F* Wpm)/(1000*SG of W))) =0.0008Wpm. From this Wpm in kg/m 3 =

Weight of Fly Ash in kg/m3= Wf =

Water content for Fly Ash in kg/m3 = Wwf=

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wf+Wggbs) in kg/m 3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwf-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Fly Ash = 2.19Specific Gravity of Water = 1Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.12

844.48

805.32

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with Fly Ash for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the Fly Ash content:Ratio of Weight of Water and Fly Ash = W/F= 0.4Ratio of Water and Cement = W/C= 0.25

0.024

27.6

27.65. Determine the mixing water content required for Fly Ash:

11.046. Determine the SP dosage:

10.837. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

6.50

148.05

MIX PROPORTION:CEMENT FLY ASH FA CA SP WATER/BINDER M.SILICA VMA

574.02 27.60 844.48 805.32 10.83 148.05 40.18 1.722PROPORTION 1 0.05 1.47 1.40 0.019 0.258 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of F)) + ((1*Ratio of W/F* Wpm)/(1000*SG of W))) =0.0008Wpm. From this Wpm in kg/m 3 =

Weight of Fly Ash in kg/m3= Wf =

Water content for Fly Ash in kg/m3 = Wwf=

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wf+Wggbs) in kg/m 3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwf-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Fly Ash = 2.19Specific Gravity of Water = 1Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.11

836.94

798.13

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with Fly Ash for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the Fly Ash content:Ratio of Weight of Water and Fly Ash = W/F= 0.4Ratio of Water and Cement = W/C= 0.25

0.029

34.2

34.25. Determine the mixing water content required for Fly Ash:

13.676. Determine the SP dosage:

10.957. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

6.57

150.60

MIX PROPORTION:CEMENT FLY ASH FA CA SP WATER/BINDER M.SILICA VMA

574.02 34.16 836.94 798.13 10.95 150.60 40.18 1.722PROPORTION 1 0.06 1.46 1.39 0.019 0.262 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of F)) + ((1*Ratio of W/F* Wpm)/(1000*SG of W))) =0.0008Wpm. From this Wpm in kg/m 3 =

Weight of Fly Ash in kg/m3= Wf =

Water content for Fly Ash in kg/m3 = Wwf=

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wf+Wggbs) in kg/m 3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwf-Wwsp)

QUANTITY(kg/m3)

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Fly Ash = 2.19Specific Gravity of Water = 1.1Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.1

829.40

790.94

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with Fly Ash for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the Fly Ash content:Ratio of Weight of Water and Fly Ash = W/F= 0.4Ratio of Water and Cement = W/C= 0.25

0.035

40.7

40.75. Determine the mixing water content required for Fly Ash:

16.296. Determine the SP dosage:

11.077. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

6.64

153.16

MIX PROPORTION:CEMENT FLY ASH FA CA SP WATER/BINDER M.SILICA

574.02 40.73 829.40 790.94 11.07 153.16 40.18PROPORTION 1 0.07 1.44 1.38 0.019 0.267 0.07

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of F)) + ((1*Ratio of W/F* Wpm)/(1000*SG of W))) =0.0008Wpm. From this Wpm in kg/m 3 =

Weight of Fly Ash in kg/m3= Wf =

Water content for Fly Ash in kg/m3 = Wwf=

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wf+Wggbs) in kg/m 3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwf-Wwsp)

QUANTITY(kg/m3)

VMA1.7220.003

MIX DESIGN FOR M70 CONCRETE

Size of Coarse Aggregate in mm = 10Specific Gravity of Coarse Aggregate = 2.631

1498Specific Gravity of Fine Aggregate = 2.61

1450Specific Gravity of Cement = 3.01Specific Gravity of Water = 1Specific Gravity of GGBS = 2.91Volume ratio of FineAggregate to Coarse Aggregate = 52/48Specific Gravity of Super Plasticiser = 1.09Air content in SCC= 1.25%PROCEDURE:

Characterisic Strength in MPa = 70Target mean strength in MPa = fck + (K*S) =Refer table 10.4 & 10.3 for K & S values 80.3951.Determine the amount of FA & CA :Let Packing Factor(PF) = 1.1

829.40

790.94

2.Determine the Cement content @ 7.14 kg per Mpa =C=(7.14* Target mean strength)= 574.023. Mixing Water content required by Cement :W/C ratio of SCC produced with GGBS for obtaining 80.395 MPa. Is = 0.25

143.514. Determine the GGBS content:Ratio of Weight of Water and GGBS = W/S= 0.3Ratio of Water and Cement = W/C= 0.25

0.0349

54.2054.20

5. Determine the mixing water content required for GGBS:

16.266. Determine the SP dosage:

11.317. Adjustment of mixing water content needed in SCC: Let Solid content of SP is 30% = 0.30

7.92

151.85

MIX PROPORTION:CEMENT GGBS FA CA SP WATER/BINDER M.SILICA VMA

574.02 54.20 829.40 790.94 11.31 151.85 40.18 1.722PROPORTION 1 0.09 1.44 1.38 0.020 0.265 0.07 0.003

Bulk Density of Coarse Aggregate in kg/m3 =

Bulk Density of Fine Aaggregate in kg/m3 =

Amount of Fine Aggregate needed per unit volume of SCC in kg/m3= Ws =B.D of FA*PF*%of FA=

Amount of Coarse Aggregate needed per unit volume of SCC in kg/m3= Wg =B.D of CA*PF*%of CA=

Amount of mixing water in kg/m3 = Wwc =

Vpf + Vpb = 1- ((Wg/(1000*SG of CA)) +(Ws/(1000*SG of FA)) +(C/(1000*SG of C)) + (Wwc/(1000*SG of W))+ Air content)=

(((1*Wpm)/(1000*SG of GGBS)) + ((1*Ratio of W/GGBS*Wpm)/(1000*SG of W))) =0.0006Wpm . From this Wpm in kg/m3 =Weight of GGBS in kg/m3= Wggbs=

Water content for GGBS in kg/m3 = Wwb =

General dosage of SP based on previous engineering experience is 1.8%. Wsp=0.018*(C+Wggbs) in kg/m3

Amount of Water in SP=Wwsp= (1-0.30)*Wsp in kg/m3 =

Amount of mixing water needed in SCC in kg/m3 = W =(Wwc+Wwb-Wwsp)

QUANTITY(kg/m3)

SCC TEST RESULTS FOR M70 GRADE CONCRETE(WITH DIFFERENT W/C)

W/C 0.23 0.24 0.25 0.26 0.27W/B 0.246 0.251 0.257 0.265 0.278F.ASH/m3 44.03 36.45 28.89 21.32 13.75S.Flow(mm) 600x600 610x610 660x660 680x680 700x700T50(sec) 3.94 3.88 3.82 3.32 2.5V.Funnel(SEC) 8.5 8.35 8 7.95 6.89T-5min(sec) 11.89 10.92 10.66 10.23 9.95L-Box 0.96 0.96 0.97 0.97 0.98U-Box(mm) 9 7 6 5 4C.Strength(7days) 53.11N/mm2 52.44N/mm2

Range

650to8002to56to126to150.8to10to30