How we calculate the cement for the M 15 normal concrete with
aggregate size is 40 mm ?
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Answer Posted / mangesh
for M15 proportion is 1:2:4
assume wet volume 1 m3 of work
to produce 1 m3 of wet volume we need 1.54 dry volume
cement qty=1.54/1+2+4=0.22 m3
hence no of bag=0.22*1440/50=6.33 nos
sand qty=0.154*2=0.308 m3
agg qty=0.154*4= 0.616 m3
40 mm is max size of agg & it is the std value
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