All About Concrete 6g502j

Density of Steel: Density of Concrete (RCC): Density of Concrete (PCC): Specific Gravity of Cement: Density of Cement: Density of coarsand: Density of Pabble / Jelly (Size 20 mm): Dry Quantity of 1 Cubic Mtr. Of Concrete = : Water To Cement Ratio (40%-55%):

7850 Kg/M3 2400 Kg/M3 2400 Kg/M3 3150 or 1440 Kg/M3 1450 Kg/M3 1680 Kg/M3 1.54 CuM 50 %

CALCULATION FOR 1-CuM OF C

3.15

Cement Water Fine aggregate Coarse aggregate Chemical ixture Water-cement ratio

CALCULATION FOR 1-CuM OF CONCERETE

Concrete Grade M5 M7.5 M10 M15 M20 M25 M30 M35 M40 M45 (Design)

Mix Ratio Cement Coarsand Pabble Cement:Sand:Pabble (CuM) (CuM) (CuM) 1 1 1 1 1 1 1 1 1 1

: : : : : : : : : :

5 4 3 2 1.5 1 0.75 0.5 0.25 1.53

: 10 : 8 : 6 : 4 : 3 : 2 : 1.5 : 1 : 0.5 : 2.36

0.0963 0.1185 0.1540 0.2200 0.2800 0.3850 0.4738 0.6160 0.8800 0.3149

0.4813 0.4738 0.4620 0.4400 0.4200 0.3850 0.3554 0.3080 0.2200 0.4818

0.9625 0.9477 0.9240 0.8800 0.8400 0.7700 0.7108 0.6160 0.4400 0.7432

Total Coarsand Concrete Cement (Kg) (Kg) (CuM) 1.5400 138.600 697.813 1.5400 170.585 687.077 1.5400 221.760 669.900 1.5400 316.800 638.000 1.5400 403.200 609.000 1.5400 554.400 558.250 1.5400 682.338 515.308 1.5400 887.040 446.600 1.5400 1267.200 319.000 1.5400 453.497 698.669

CALCULATION FOR 1-CuM OF CONCERETE (M20)

Fine aggregate Coarse aggregate Chemical ixture Water-cement ratio

350 Kg/m3 140 Kg/m3 896 Kg/m3 1140 Kg/m3 7 Kg/m3 40 % 2526

Pabble (Kg)

Total Dry Concrete Weight (Kg)

As per IS: Water Weight (Kg. or Lit.)

Calculated Cement To Water Ratio (WCR) %

Total Concrete Weight (Kg)

1617.000 1592.123 1552.320 1478.400 1411.200 1293.600 1194.092 1034.880 739.200 1248.628

2453.413 2449.785 2443.980 2433.200 2423.400 2406.250 2391.738 2368.520 2325.400 2400.794

70.50 87.00 113.00 161.00 201.60 282.50 286.00 370.00 525.00 153.000

50.87% 51.00% 50.96% 50.82% 50.00% 50.96% 41.91% 41.71% 41.43% 33.74%

2523.913 2536.785 2556.980 2594.200 2625.000 2688.750 2677.738 2738.520 2850.400 2553.794

Concrete Grade and Mix Ratio Table As per IS 456:2000, the grades less than M20 should not be used in RCC works

1 psi = 145 (N/mm2 ) or (Mpa) 1 N/mm2 = 0.006896552 psi

Group

Ordinary Concrete

Standard Concrete

High Strength Concrete

Concrete Grade M5 M7.5 M10 M15 M20 M25 M30 M35 M40 M45 M50 M55 M60 M65 M70

Mix Ratio 1 1 1 1 1 1 1 1 1

: 5 : 10 : 4 : 8 : 3 : 6 : 2 : 4 : 1.5 : 3 : 1 : 2 : 0.75 : 1.5 : 0.5 : 1 : 0.25 : 0.5 Design Mix Design Mix Design Mix Design Mix Design Mix Design Mix

Characteristic Compressive Strength (N/mm2) or (Mpa)

Characteristic Compressive Strength (psi)

5 7.5 10 15 20 25 30 35 40 45 50 55 60 65 70

725 1087.5 1450 2175 2900 3625 4350 5075 5800 6525 7250 7975 8700 9425 10150

M5 M7.5 M10 M15 M20 M25 M30 M35 M40

1:05:10 1:04:08 1:03:06 1:02:04 01:05.5 1:01:02 1:0.75:1.5 00:05.5 1:0.25:0.5

TYPES OF GRADES OF CEMENS AVAILABLE: Sl. No.

TYPES OF GRADES

DEFNITION

1

OPC Grade

OPC means Ordinary Portland Cement is a fully automated and dry manufacturing process. It is available in two different grades-OPC-43 & OPC-53

2

OPC-43

This type of cement is used for plain concrete work and plastering works.

3

OPC-53

This type of cement is used for the structural purposes as in reinforced cement concrete.

4

PPC Grade

PPC means Portland Pozzolana Cement is a fully automated and dry manufacturing process and also contains gypsum and pozzolanic materials. This Cement is used for all types of constructions especially for dams & bridges where strong resistivity is required. It also offers the best surface finish.

5

PSC Grade

PSC means Portland Slag Cement is manufactured by inter-grinding in Portland Cement clinker. This Cement has replaced partially Ordinary Portland Cement and has many environmental and economic benefits.

6

Super Grade

Super grade Cement contains high strength. This type of Cement uses advanced techniques and manufactured by limited companies like Ultratech, Ramco cement.