For plain cement concrete, the aggregate used is of size 20 mm. For RCC structures, it is 40mm and for roads, it is 80mm
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One cubic metre of concrete weighs 2.5 Tonnes. Typically, 1m3 of concrete is made up of 350Kg of cement, 700Kg of sand, 1,200Kg of chippings and 150 Litres of water.
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M20 - 6.20bags
5,000,000 barrels of cement were used to make the 4,300,000 cubic yards of concrete required.
please define your question again. Different concrete mixes have different cement consumptions depending upon their design mix.