Question

The yield of concrete per bag of cement for a concrete mix proportion of $1:1.5:3$ (with adopting $\frac{2}{3}$ as the coefficient) is

• A. $0.090m^3$
• B. $0.128m^3$
• C. $0.135m^3$
• D. $0.146m^3$

Answer 1

The correct option is B $0.128m^3$

Volume of one bag of cement $35$ liter $=0.035m^3$
Concrete mix proportion are given by volume are Cement : Sand : Aggregate
$1:1.5:3$
So, volume of dry mix $0.035+1.5\times 0.035+3\times 0.035$ volume of dry mix $=0.1925m^3$.
Wet mix yield of concrete $=\frac{2}{3}\times 0.1925=0.128m^3$