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