According is IS 2386 the formula of bulking of sand
=(A−BB)×100
A=bulking sand
B=dry sand
In question concrete mix ratio is given by 1:2:4
Cement= X , sand = 2X, aggregate = 4X
Bulking of sand=15 %
15=(A−BB)×100=(2X−BB×100)→B=1.739X
then ratio... (More)
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