It depends on the required grade of concrete, you need to know the particular grade.
The three grades specify the ratios of Cement : Stone : Sand.
M15 = M150 = 1 : 2 : 4
M20 = M200 = 1 : 1.5 : 3
M25 = M250 = 1 : 1 : 2
As you can see there is always two parts sand to one part stone. Higher grades have more cement. So the ratio of stone to the whole is 2:7, 3:11, and 1:4. The percentages are 28.6%, 27.3%, and 25.0%.
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The weight of coarse aggregate required to fill one cubic meter depends on its density, which typically ranges from 1,500 to 2,500 kilograms per cubic meter. Therefore, one cubic meter of coarse aggregate generally weighs between 1.5 to 2.5 tonnes. For example, if using a density of 2,000 kg/m³, one cubic meter would equal 2 tonnes. Always check the specific density of the material being used for accurate calculations.
For plain cement concrete, the aggregate used is of size 20 mm. For RCC structures, it is 40mm and for roads, it is 80mm
please define your question again. Different concrete mixes have different cement consumptions depending upon their design mix.
The mass of a cubic metre of concrete is 2250-2400 kilograms.
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