Direction: 2 ton of cement is used to make 10 ton of hardened concrete having a water cement ratio of 0.45.
One cubic meter of this concrete has a mass of 2.5 ton.
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The area of 200 mm thick slab (in sq. m) that can be cast using the entire 10 ton of concrete will be
-
- 10
- 15
- 20
- 25
Correct Option: C
Thickness of slab = 0.2 m
Weight of Concrete = 10 ton = 9071.85 kg
Density of concrete = 2400 kg/cum
Density = Weight/Volume
2400 = 9071.85/Area × 0.2
Area = 9071.85/480 = 18.8 sq m
