how to calculate the required qantities of cement, Sand and
aggrigate to prepare 1 Cum of concrete mix 1:2:4
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Answer Posted / jayaraaj.arumugam
mix design 1:2:4; (1+2+4 = 7)
(using 20mm aggregate)
Volume of ingredients - 1.57 ( thump rule)
Aggregate - 4/7 * 1.57 = 0.89 Say 0.9 m3
sand - 2/7 * 1.57 = 0.448 say 0.45 m3
cement - 1/7 * 1.57 = 0.224 say 0.225 m3
weight of cement required - 0.225 * 1440 = 324 kg.
if any mistake please inform...
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