TRIAL MIX done with FOSROC

Sl. No. Grade of concrete W/C Slump 7 days days strength

1 M20A40 (Pumpable) 0.50 180 mm 110mm 19.85N/mm2

2 M20A40 (NonPumpable) 0.50 120mm 70mm 19.03N/mm2

3 M25A40 (NonPumpable) 0.44 115mm 65mm 23.11N/mm2

4 M25A20 (Pumpable) 0.45 22.37N/mm2

6 M15A20 (Pumpable) 0.58 130mm 110mm 11.70N/mm2

7 M15A40 (NonPumpable) 0.55 100mm 70mm 14.59N/mm2

8 M20A20 (NonPumpable) 0.50 100mm 70mm 14.37N/mm2

9 M30A20 In Progress

Remarks:- Proportion of Coarse & Fine Aggregates = 60 : 40Cement used = Birla Samrat (PPC)Sand used = Shipsu and Mazhi goan quarry

28 days days strength F.A:C.A Admixture

29.4 N/mm2 40:60

26.29N/mm2 40:60 Pumpable = 0.8%

34.08N/mm2 40:60 by weight of

32.0N/mm2 40:60 cement22.88N/mm2 39:61

Awaited 38:62

25.85N/mm2 Non-pumpable =0.6%by weight of

In Progress

Concrete Mix Status

Sl. No. W/C Slump(mm) Cement Water Sand 10mm

Initial After 15 minutes Kg Kg Kg kg1 M15A150 0.74 75 45 190 140.6 540.92 238.862 M15A150 0.70 90 60 200 140 518.32 241.253 M15A150 0.65 75 40 215 139.75 515.21 239.814 M20A80 0.60 70 30 265 159 537.21 246.925 M20A80 0.63 95 70 245 154.35 545.13 250.566 M20A10 0.50 190 After 30 mins,155 390 195 1013.94 717.24

Grade of concrete

Concrete Mix Status

20mm 40mm 80mm 150mm

kg kg Kg Kg270.71 318.48 350.33 414.03 - 8.77 awaited273.42 321.67 353.84 418.18 - 10.00 awaited271.79 319.74 351.72 415.67 - 10.44 awaited334.07 421.22 450.26 ……. - 14.00 23.22339.00 427.42 456.90 ……. - 12.88 21.48

- - - - 1%(3.9 Kg) 14.96 28.29

WRA by wt of

cement

7 days Compressive

Strength,N/mm2

28 days Compressive

Strength,N/mm2

Revised Concrete Mix of M25 -A40

SI.No. W/C ratio Slump Cement Water Sand 10mm Intial After 15 Minutes

1 0.43 60mm 40mm 390 167.7 702.702 0.44 75mm 55mm 390 171.60 701.07 240.213 0.45 70mm 50mm 390 175.50 715.44 229.44 0.43 70mm 50mm 400 172.00 715.96 246.365 0.44 75mm 55mm 400 176.00 693.53 248.946 0.45 75mm 55mm 400 180.00 698.53 234.32

Note- The mix -design of M25 A40 is done with different water cement ratio. The slump of 60 mm looks like harsh Mix compared to 70-75mm slump.

Revised Concrete Mix of M25 -A40

20mm 40mm Compressive Strength 7 days 28 days

388.91 514.73 0.90%386.06 503.56 0.9%(380.75 492.73 0.9%(384.73 497.88384.96 496.54 0.7%(

Note- The mix -design of M25 A40 is done with different water cement ratio. The slump of 60 mm looks like harsh Mix compared to 70-75mm slump.

Admixture by wt.

of cement

Concrete Mix Status

W/C Slump(mm) Cement Water Sand 10mm 20mm 40mm

Initial Kg Kg Kg Kg Kg Kg

1 M15A20 (P) 0.58 130 310 179.8 712.06 531.79 642.95 - 0.80% 13.70 22.88 20.80

2 M15A40 (NP) 0.55 100 70 280 154 756.67 185.18 506.17 543.67 0.80% 14.59 23.22 20.80

3 M20A20 (NP) 0.50 100 370 185 668.71 520.96 629.86 - 0.80% 18.66 28.66 26.60

4 M20A40 (P) 0.50 180 110 350 175 749.33 247.28 382.16 494.55 0.80% 19.85 29.40 26.60

5 M20A40 (NP) 0.50 120 70 350 175 749.33 247.28 382.16 494.55 0.60% 19.03 26.29 26.60

6 M25A20 (P) 0.45 180 110 425 191.25 644.24 501.89 606.8 - 0.80% 22.37 32.00 31.60

7 M25A40 (NP) 0.44 115 65 416 183.04 718.51 237.11 366.44 474.21 0.60% 23.11 34.08 31.60

Remarks:- P= Pumpable and NP= NonpumpableCement used = Birla Samrat (PPC)Sand used = Shipsu and Mazhi goan quarry

Note:-The above Mix Design of concrete has been done with in the limits of Target Mean Strength of concrete as given in IS 456 and we havenot10262.However we have not increased the cement content in above Mix-Design except in M20A20.We have increased the cement

content in M20 A20 by 20 kg in 1 m3.Because we are not getting strength with existing cement content.We have adjusted the proportions of Fine and Coarse aggregate in existing Mix-Design as per IS or ACI Codes.

Kundan KumarManager,QC

Sl. No.

Grade of concrete WRA by

wt of cement,Fosroc

7 days Compressive Strength,N/m

m2

28 days Compressive Strength,N/m

m2

Target Mean

Strength,N/mm2After 30

mins

110 (After 15 mins)

70 (After 15 mins)

JPCL

Concrete Mix Status

W/C Slump(mm) Cement Water Sand 10mm 20mm 40mm

Initial Kg Kg Kg Kg Kg Kg

1 M15A20 (P) 0.58 130 310 179.8 712.06 531.79 642.95 - 0.8%(2.48 Kg) 13.70 22.88 20.80

2 M15A40 (NP) 0.55 100 70 280 154 756.67 185.18 506.17 543.67 0.8%(2.24 Kg) 14.59 23.22 20.803 M20A10(P) 0.50 190 155 390 195 1013.94 717.24 - - 1%(3.9 Kg) 14.96 28.29 26.60

4 M20A20 (NP) 0.50 100 370 185 668.71 520.96 629.86 - 0.8%(2.96 Kg) 18.66 28.66 26.60

5 M20A40 (P) 0.50 180 110 350 175 749.33 247.28 382.16 494.55 0.8%(2.8 Kg) 19.85 29.40 26.60

6 M20A40 (NP) 0.50 120 70 350 175 749.33 247.28 382.16 494.55 0.6%(2.1 Kg) 19.03 26.29 26.60

7 M25A20 (P) 0.45 180 110 425 191.25 644.24 501.89 606.8 - 0.8%(3.4 Kg) 22.37 32.00 31.60

8 M25A40 (NP) 0.44 115 65 416 183.04 718.51 237.11 366.44 474.21 0.6%(2.5 Kg) 23.11 34.08 31.60

Remarks:- P= Pumpable and NP= Nonpumpable

Jyotindra Nirala Kundan KumarSr.Dy.Manager,QC Manager,QC CPL JPCL

Sl. No.

Grade of concrete WRA by wt of

cement,Fosroc

7 days Compressive

Strength, N/mm2

28 days Compressive

Strength, N/mm2

Target Mean

Strength,N/mm2After 30

mins

110 (After 15 mins)

70 (After 15 mins)

Revised Concrete Mix of M25 -A40

SI.No. W/C ratio Slump Cement Water Sand 10mm Intial After 15 Minutes

1 0.43 70,65mm 55,50mm 390 167.7 702.702 0.43 65.60mm 50,45mm 400 172.00 715.96 246.36

Revised Concrete Mix of M25 -A40

20mm 40mm Compressive Strength 7 days 28 days

17.64380.75 492.73 0.9%( 18.12

Admixture by wt.

of cement

Concrete Mix of M15 -A150

Slump,mm Cement Water Sand 10mm 20mm 40mm 80mm 150 mm

Intial 7 Days

1 0.60 60,65 50,50 215 129 522.25 243.087 275.498 324.116 356.527 421.35 0.80% 12.44,11.78 2 0.60 65,60 50,45 200 120 531.423 247.355 280.335 329.807 362.787 428.748 0.85% 11.27,10.98

SI.

No.

W/C

ratio

Admixture by

wt. of cement

Compressive

Strength,N/mm2 After 15

Minutes

28 Days Awaited Awaited

Compressive

Strength,N/mm2

Concrete Mix of M25 -A80

Slump,mm Cement Water Sand 10mm 20mm 40mm 80mm

Intial 7 Days 28 Days

1 0.45 70,65 55,55 330 148.5 463.11 257.872 348.886 439.9 470.238 0.80% Awaited Awaited

SI.

No.

W/C

ratio

Admixture by

wt. of cement

Compressive

Strength,N/mm2 After 15

Minutes

Concrete Mix of M25 -A40(Revised)

Slump,mm Cement Water Sand 10mm 20mm 40mm

Intial 7 Days 28 Days

1 0.43 70 50 370 0.90% Awaited Awaited

Note:- We will also check the Compressive strength of concrete after 90 and 180 days.

Kundan KumarManager,QC

JPCL

SI.

No.

W/C

ratio

Admixture by

wt. of cement

Compressive

Strength,N/mm2 After 15

Minutes

Training Details

Date of journey

1 14/2/2012

Kundan KumarManager,QC

JPCL

SI.N

o.

17 .

CONTINUE FROM PAGE NO.2

WORK EXPERIENCE

Name & Address Date of Designation Nature of work Joining Leaving

1 V.

V.

Sr. No.

Last Gross Monthly pay